./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix012_pso.opt_tso.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/mix012_pso.opt_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix012_pso.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 11:59:27,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:59:27,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:59:27,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:59:27,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:59:27,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:59:27,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:59:27,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:59:27,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:59:27,987 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:59:27,987 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:59:27,988 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:59:27,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:59:27,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:59:27,990 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:59:27,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:59:27,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:59:27,990 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:59:27,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:59:27,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:59:27,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:59:27,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:59:27,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:59:27,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:59:27,993 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:59:27,993 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:59:27,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:59:27,994 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:59:27,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:59:27,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:59:27,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:59:27,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:59:27,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:59:27,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:59:27,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:59:27,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:59:27,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:59:27,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:59:27,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:59:27,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:59:27,997 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:59:27,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:59:27,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:59:27,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:59:28,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:59:28,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:59:28,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:59:28,235 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:59:28,236 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:59:28,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-14 11:59:29,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:59:29,561 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:59:29,562 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-14 11:59:29,572 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28143f5cc/97c9b511388440999050afe1d26d0802/FLAG542f893df [2024-06-14 11:59:29,583 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28143f5cc/97c9b511388440999050afe1d26d0802 [2024-06-14 11:59:29,585 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:59:29,585 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:59:29,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix012_pso.opt_tso.opt.yml/witness.yml [2024-06-14 11:59:29,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:59:29,715 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:59:29,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:59:29,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:59:29,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:59:29,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:59:29" (1/2) ... [2024-06-14 11:59:29,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638f6b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:59:29, skipping insertion in model container [2024-06-14 11:59:29,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:59:29" (1/2) ... [2024-06-14 11:59:29,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@120e7f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:59:29, skipping insertion in model container [2024-06-14 11:59:29,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:59:29" (2/2) ... [2024-06-14 11:59:29,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638f6b87 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:59:29, skipping insertion in model container [2024-06-14 11:59:29,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:59:29" (2/2) ... [2024-06-14 11:59:29,724 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:59:29,777 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:59:29,779 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-14 11:59:29,779 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-14 11:59:29,779 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:59:29,779 INFO L106 edCorrectnessWitness]: ghost_update [L822-L822] multithreaded = 1; [2024-06-14 11:59:29,820 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:59:30,161 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:59:30,172 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:59:30,281 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:59:30,311 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:59:30,311 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:59:30 WrapperNode [2024-06-14 11:59:30,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:59:30,312 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:59:30,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:59:30,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:59:30,317 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,332 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,355 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-14 11:59:30,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:59:30,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:59:30,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:59:30,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:59:30,364 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,365 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,367 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,382 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 11:59:30,382 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,382 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,388 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,389 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,391 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,408 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:59:30,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:59:30,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:59:30,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:59:30,415 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 11:59:30" (1/1) ... [2024-06-14 11:59:30,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:59:30,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:59:30,447 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 11:59:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:59:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:59:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:59:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:59:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:59:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:59:30,463 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 11:59:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:59:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:59:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:59:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:59:30,481 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 11:59:30,600 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:59:30,602 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:59:30,966 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:59:30,966 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:59:31,057 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:59:31,057 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:59:31,058 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:59:31 BoogieIcfgContainer [2024-06-14 11:59:31,058 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:59:31,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:59:31,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:59:31,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:59:31,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:59:29" (1/4) ... [2024-06-14 11:59:31,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c4d447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:59:31, skipping insertion in model container [2024-06-14 11:59:31,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:59:29" (2/4) ... [2024-06-14 11:59:31,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c4d447 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:59:31, skipping insertion in model container [2024-06-14 11:59:31,064 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 11:59:30" (3/4) ... [2024-06-14 11:59:31,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c4d447 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:59:31, skipping insertion in model container [2024-06-14 11:59:31,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:59:31" (4/4) ... [2024-06-14 11:59:31,069 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_pso.opt_tso.opt.i [2024-06-14 11:59:31,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:59:31,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:59:31,082 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:59:31,116 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:59:31,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 11:59:31,170 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-14 11:59:31,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:59:31,172 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 11:59:31,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 11:59:31,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-14 11:59:31,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:59:31,191 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;@4c7066b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:59:31,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:59:31,195 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:59:31,195 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 11:59:31,196 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:59:31,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:31,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:59:31,196 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 11:59:31,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:31,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1928007687, now seen corresponding path program 1 times [2024-06-14 11:59:31,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:31,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746776000] [2024-06-14 11:59:31,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:31,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:31,995 INFO 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 11:59:31,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:31,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746776000] [2024-06-14 11:59:31,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746776000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:31,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:31,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:59:31,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877248357] [2024-06-14 11:59:31,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:32,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:59:32,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:32,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:59:32,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:59:32,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-14 11:59:32,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:32,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:32,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-14 11:59:32,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:32,175 INFO L124 PetriNetUnfolderBase]: 131/259 cut-off events. [2024-06-14 11:59:32,175 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 11:59:32,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 259 events. 131/259 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 969 event pairs, 75 based on Foata normal form. 1/250 useless extension candidates. Maximal degree in co-relation 503. Up to 235 conditions per place. [2024-06-14 11:59:32,180 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-14 11:59:32,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 117 flow [2024-06-14 11:59:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:59:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:59:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-14 11:59:32,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-14 11:59:32,191 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-14 11:59:32,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 117 flow [2024-06-14 11:59:32,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:59:32,195 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-14 11:59:32,196 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 11:59:32,198 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-14 11:59:32,199 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-14 11:59:32,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:32,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:32,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:32,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:59:32,200 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 11:59:32,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:32,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1684465704, now seen corresponding path program 1 times [2024-06-14 11:59:32,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:32,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288888842] [2024-06-14 11:59:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:32,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:32,776 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 11:59:32,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:32,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288888842] [2024-06-14 11:59:32,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288888842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:32,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:32,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:59:32,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598180394] [2024-06-14 11:59:32,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:32,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:59:32,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:32,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:59:32,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:59:32,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 11:59:32,805 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 11:59:32,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:32,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 11:59:32,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:32,915 INFO L124 PetriNetUnfolderBase]: 147/276 cut-off events. [2024-06-14 11:59:32,915 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-14 11:59:32,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 276 events. 147/276 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 977 event pairs, 47 based on Foata normal form. 4/280 useless extension candidates. Maximal degree in co-relation 623. Up to 244 conditions per place. [2024-06-14 11:59:32,920 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-14 11:59:32,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 165 flow [2024-06-14 11:59:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:59:32,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:59:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-14 11:59:32,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-06-14 11:59:32,923 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 67 transitions. [2024-06-14 11:59:32,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 165 flow [2024-06-14 11:59:32,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:59:32,926 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-14 11:59:32,927 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 11:59:32,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-14 11:59:32,927 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-14 11:59:32,928 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 11:59:32,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:32,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:32,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:59:32,929 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 11:59:32,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:32,931 INFO L85 PathProgramCache]: Analyzing trace with hash 480685493, now seen corresponding path program 1 times [2024-06-14 11:59:32,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:32,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333634720] [2024-06-14 11:59:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:32,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:33,920 INFO 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 11:59:33,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:33,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333634720] [2024-06-14 11:59:33,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333634720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:33,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:33,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:59:33,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703062612] [2024-06-14 11:59:33,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:33,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:59:33,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:33,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:59:33,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:59:33,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 11:59:33,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:33,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:33,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 11:59:33,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:34,184 INFO L124 PetriNetUnfolderBase]: 143/268 cut-off events. [2024-06-14 11:59:34,185 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-06-14 11:59:34,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 268 events. 143/268 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 921 event pairs, 25 based on Foata normal form. 4/272 useless extension candidates. Maximal degree in co-relation 671. Up to 218 conditions per place. [2024-06-14 11:59:34,186 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-14 11:59:34,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 210 flow [2024-06-14 11:59:34,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:59:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:59:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-14 11:59:34,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-14 11:59:34,188 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 6 states and 89 transitions. [2024-06-14 11:59:34,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 210 flow [2024-06-14 11:59:34,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 198 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 11:59:34,190 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 111 flow [2024-06-14 11:59:34,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2024-06-14 11:59:34,190 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2024-06-14 11:59:34,191 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 111 flow [2024-06-14 11:59:34,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:34,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:34,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:34,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:59:34,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:34,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:34,192 INFO L85 PathProgramCache]: Analyzing trace with hash 349645541, now seen corresponding path program 1 times [2024-06-14 11:59:34,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:34,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242731661] [2024-06-14 11:59:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:34,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:34,657 INFO 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 11:59:34,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:34,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242731661] [2024-06-14 11:59:34,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242731661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:34,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:34,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:59:34,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812556442] [2024-06-14 11:59:34,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:34,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:59:34,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:34,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:59:34,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:59:34,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 11:59:34,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:34,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:34,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 11:59:34,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:34,804 INFO L124 PetriNetUnfolderBase]: 119/238 cut-off events. [2024-06-14 11:59:34,804 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2024-06-14 11:59:34,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 238 events. 119/238 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 843 event pairs, 34 based on Foata normal form. 1/239 useless extension candidates. Maximal degree in co-relation 642. Up to 211 conditions per place. [2024-06-14 11:59:34,806 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-14 11:59:34,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 191 flow [2024-06-14 11:59:34,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:59:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:59:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-06-14 11:59:34,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2024-06-14 11:59:34,807 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 111 flow. Second operand 5 states and 68 transitions. [2024-06-14 11:59:34,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 191 flow [2024-06-14 11:59:34,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 175 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 11:59:34,809 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 122 flow [2024-06-14 11:59:34,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-14 11:59:34,810 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-14 11:59:34,810 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 122 flow [2024-06-14 11:59:34,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:34,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:34,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:34,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:59:34,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:34,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:34,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2045889131, now seen corresponding path program 1 times [2024-06-14 11:59:34,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:34,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56125213] [2024-06-14 11:59:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:34,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:35,480 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 11:59:35,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:35,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56125213] [2024-06-14 11:59:35,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56125213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:35,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:35,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:59:35,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143603044] [2024-06-14 11:59:35,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:35,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:59:35,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:35,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:59:35,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:59:35,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 11:59:35,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 11:59:35,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:35,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 11:59:35,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:35,682 INFO L124 PetriNetUnfolderBase]: 115/232 cut-off events. [2024-06-14 11:59:35,682 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2024-06-14 11:59:35,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 232 events. 115/232 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 812 event pairs, 32 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 658. Up to 199 conditions per place. [2024-06-14 11:59:35,684 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-14 11:59:35,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 216 flow [2024-06-14 11:59:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:59:35,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:59:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2024-06-14 11:59:35,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-14 11:59:35,686 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 122 flow. Second operand 6 states and 80 transitions. [2024-06-14 11:59:35,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 216 flow [2024-06-14 11:59:35,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 205 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 11:59:35,688 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 144 flow [2024-06-14 11:59:35,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-14 11:59:35,688 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-14 11:59:35,689 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 144 flow [2024-06-14 11:59:35,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 11:59:35,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:35,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:35,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:59:35,689 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 11:59:35,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1001732070, now seen corresponding path program 1 times [2024-06-14 11:59:35,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:35,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145854692] [2024-06-14 11:59:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:35,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:36,156 INFO 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 11:59:36,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:36,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145854692] [2024-06-14 11:59:36,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145854692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:36,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:36,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:59:36,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116701504] [2024-06-14 11:59:36,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:36,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:59:36,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:59:36,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:59:36,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:36,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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 11:59:36,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:36,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:36,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:36,351 INFO L124 PetriNetUnfolderBase]: 141/268 cut-off events. [2024-06-14 11:59:36,352 INFO L125 PetriNetUnfolderBase]: For 511/511 co-relation queries the response was YES. [2024-06-14 11:59:36,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 268 events. 141/268 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 940 event pairs, 38 based on Foata normal form. 2/270 useless extension candidates. Maximal degree in co-relation 832. Up to 237 conditions per place. [2024-06-14 11:59:36,353 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-14 11:59:36,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 260 flow [2024-06-14 11:59:36,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:59:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:59:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-14 11:59:36,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 11:59:36,354 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 144 flow. Second operand 6 states and 78 transitions. [2024-06-14 11:59:36,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 260 flow [2024-06-14 11:59:36,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 243 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:59:36,356 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 160 flow [2024-06-14 11:59:36,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-14 11:59:36,357 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-14 11:59:36,357 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 160 flow [2024-06-14 11:59:36,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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 11:59:36,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:36,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:36,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:59:36,358 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 11:59:36,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:36,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1001939460, now seen corresponding path program 2 times [2024-06-14 11:59:36,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:36,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407052692] [2024-06-14 11:59:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:36,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:36,852 INFO 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 11:59:36,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:36,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407052692] [2024-06-14 11:59:36,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407052692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:36,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:36,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:59:36,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219793681] [2024-06-14 11:59:36,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:36,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:59:36,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:36,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:59:36,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:59:36,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:36,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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 11:59:36,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:36,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:36,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:37,029 INFO L124 PetriNetUnfolderBase]: 142/273 cut-off events. [2024-06-14 11:59:37,029 INFO L125 PetriNetUnfolderBase]: For 682/684 co-relation queries the response was YES. [2024-06-14 11:59:37,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 273 events. 142/273 cut-off events. For 682/684 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 966 event pairs, 42 based on Foata normal form. 4/277 useless extension candidates. Maximal degree in co-relation 891. Up to 230 conditions per place. [2024-06-14 11:59:37,031 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 30 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2024-06-14 11:59:37,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 276 flow [2024-06-14 11:59:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:59:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:59:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-14 11:59:37,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 11:59:37,033 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 160 flow. Second operand 6 states and 78 transitions. [2024-06-14 11:59:37,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 276 flow [2024-06-14 11:59:37,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 259 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:59:37,035 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 186 flow [2024-06-14 11:59:37,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-14 11:59:37,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-14 11:59:37,035 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 186 flow [2024-06-14 11:59:37,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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 11:59:37,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:37,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:37,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:59:37,036 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 11:59:37,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1850957652, now seen corresponding path program 1 times [2024-06-14 11:59:37,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:37,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976774986] [2024-06-14 11:59:37,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:37,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:37,621 INFO 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 11:59:37,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:37,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976774986] [2024-06-14 11:59:37,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976774986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:37,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:37,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:59:37,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241207462] [2024-06-14 11:59:37,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:37,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:59:37,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:37,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:59:37,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:59:37,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:37,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 186 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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 11:59:37,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:37,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:37,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:37,961 INFO L124 PetriNetUnfolderBase]: 153/295 cut-off events. [2024-06-14 11:59:37,962 INFO L125 PetriNetUnfolderBase]: For 880/880 co-relation queries the response was YES. [2024-06-14 11:59:37,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 295 events. 153/295 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1076 event pairs, 38 based on Foata normal form. 1/296 useless extension candidates. Maximal degree in co-relation 1032. Up to 254 conditions per place. [2024-06-14 11:59:37,963 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-06-14 11:59:37,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 55 transitions, 366 flow [2024-06-14 11:59:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:59:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:59:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 11:59:37,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-14 11:59:37,974 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 186 flow. Second operand 8 states and 99 transitions. [2024-06-14 11:59:37,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 55 transitions, 366 flow [2024-06-14 11:59:37,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 335 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 11:59:37,976 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 247 flow [2024-06-14 11:59:37,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=247, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-14 11:59:37,977 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-14 11:59:37,977 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 247 flow [2024-06-14 11:59:37,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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 11:59:37,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:37,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:37,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:59:37,978 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 11:59:37,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:37,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1756143508, now seen corresponding path program 2 times [2024-06-14 11:59:37,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:37,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276534718] [2024-06-14 11:59:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:37,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:38,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:38,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276534718] [2024-06-14 11:59:38,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276534718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:38,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:38,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:59:38,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717500276] [2024-06-14 11:59:38,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:38,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:59:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:59:38,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:59:38,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:38,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 247 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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 11:59:38,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:38,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:38,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:38,919 INFO L124 PetriNetUnfolderBase]: 151/292 cut-off events. [2024-06-14 11:59:38,919 INFO L125 PetriNetUnfolderBase]: For 1132/1132 co-relation queries the response was YES. [2024-06-14 11:59:38,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 292 events. 151/292 cut-off events. For 1132/1132 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1071 event pairs, 37 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 1079. Up to 239 conditions per place. [2024-06-14 11:59:38,921 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 38 selfloop transitions, 16 changer transitions 0/57 dead transitions. [2024-06-14 11:59:38,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 409 flow [2024-06-14 11:59:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:59:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:59:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-14 11:59:38,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-14 11:59:38,922 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 247 flow. Second operand 7 states and 90 transitions. [2024-06-14 11:59:38,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 409 flow [2024-06-14 11:59:38,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 379 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 11:59:38,924 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 281 flow [2024-06-14 11:59:38,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=281, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-14 11:59:38,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-14 11:59:38,925 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 281 flow [2024-06-14 11:59:38,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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 11:59:38,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:38,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:38,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:59:38,926 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 11:59:38,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1756023352, now seen corresponding path program 1 times [2024-06-14 11:59:38,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:38,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510019005] [2024-06-14 11:59:38,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:38,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:39,708 INFO 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 11:59:39,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:39,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510019005] [2024-06-14 11:59:39,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510019005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:39,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:39,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:59:39,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700159111] [2024-06-14 11:59:39,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:39,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:59:39,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:39,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:59:39,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:59:39,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:39,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 281 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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 11:59:39,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:39,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:39,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:39,991 INFO L124 PetriNetUnfolderBase]: 157/302 cut-off events. [2024-06-14 11:59:39,991 INFO L125 PetriNetUnfolderBase]: For 1473/1473 co-relation queries the response was YES. [2024-06-14 11:59:39,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 302 events. 157/302 cut-off events. For 1473/1473 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1106 event pairs, 36 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 1168. Up to 255 conditions per place. [2024-06-14 11:59:39,994 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 42 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-06-14 11:59:39,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 437 flow [2024-06-14 11:59:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:59:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:59:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 11:59:39,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-14 11:59:39,995 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 281 flow. Second operand 7 states and 89 transitions. [2024-06-14 11:59:39,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 437 flow [2024-06-14 11:59:39,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 391 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 11:59:40,000 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 291 flow [2024-06-14 11:59:40,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-06-14 11:59:40,002 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-06-14 11:59:40,003 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 291 flow [2024-06-14 11:59:40,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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 11:59:40,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:40,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:40,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:59:40,004 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 11:59:40,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:40,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1578891832, now seen corresponding path program 2 times [2024-06-14 11:59:40,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:40,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339942531] [2024-06-14 11:59:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:40,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:40,761 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 11:59:40,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339942531] [2024-06-14 11:59:40,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339942531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:40,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:40,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:59:40,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573976366] [2024-06-14 11:59:40,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:40,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:59:40,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:40,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:59:40,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:59:40,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:40,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 291 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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 11:59:40,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:40,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:40,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:41,000 INFO L124 PetriNetUnfolderBase]: 163/313 cut-off events. [2024-06-14 11:59:41,000 INFO L125 PetriNetUnfolderBase]: For 1481/1483 co-relation queries the response was YES. [2024-06-14 11:59:41,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 313 events. 163/313 cut-off events. For 1481/1483 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1147 event pairs, 39 based on Foata normal form. 4/317 useless extension candidates. Maximal degree in co-relation 1226. Up to 256 conditions per place. [2024-06-14 11:59:41,002 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 41 selfloop transitions, 16 changer transitions 0/60 dead transitions. [2024-06-14 11:59:41,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 457 flow [2024-06-14 11:59:41,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:59:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:59:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 11:59:41,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-14 11:59:41,004 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 291 flow. Second operand 7 states and 89 transitions. [2024-06-14 11:59:41,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 457 flow [2024-06-14 11:59:41,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 425 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 11:59:41,007 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 325 flow [2024-06-14 11:59:41,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-14 11:59:41,007 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-14 11:59:41,007 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 325 flow [2024-06-14 11:59:41,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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 11:59:41,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:41,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:41,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:59:41,008 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 11:59:41,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash 995590324, now seen corresponding path program 3 times [2024-06-14 11:59:41,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:41,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62091112] [2024-06-14 11:59:41,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:41,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:41,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62091112] [2024-06-14 11:59:41,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62091112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:41,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:41,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:59:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226194744] [2024-06-14 11:59:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:41,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:59:41,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:59:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:59:41,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:41,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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 11:59:41,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:41,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:41,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:42,013 INFO L124 PetriNetUnfolderBase]: 161/310 cut-off events. [2024-06-14 11:59:42,014 INFO L125 PetriNetUnfolderBase]: For 1676/1678 co-relation queries the response was YES. [2024-06-14 11:59:42,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 310 events. 161/310 cut-off events. For 1676/1678 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1153 event pairs, 39 based on Foata normal form. 3/313 useless extension candidates. Maximal degree in co-relation 1284. Up to 241 conditions per place. [2024-06-14 11:59:42,016 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 22 changer transitions 0/63 dead transitions. [2024-06-14 11:59:42,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 495 flow [2024-06-14 11:59:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:59:42,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:59:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 11:59:42,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-14 11:59:42,018 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 325 flow. Second operand 7 states and 89 transitions. [2024-06-14 11:59:42,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 495 flow [2024-06-14 11:59:42,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 451 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 11:59:42,022 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 371 flow [2024-06-14 11:59:42,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-14 11:59:42,023 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-14 11:59:42,024 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 371 flow [2024-06-14 11:59:42,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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 11:59:42,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:42,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:42,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:59:42,024 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 11:59:42,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:42,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1262900598, now seen corresponding path program 1 times [2024-06-14 11:59:42,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:42,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130125481] [2024-06-14 11:59:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:42,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:43,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:43,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130125481] [2024-06-14 11:59:43,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130125481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:43,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:43,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:43,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890477066] [2024-06-14 11:59:43,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:43,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:43,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:43,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:43,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:43,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:43,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 371 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:43,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:43,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:43,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:43,535 INFO L124 PetriNetUnfolderBase]: 164/316 cut-off events. [2024-06-14 11:59:43,535 INFO L125 PetriNetUnfolderBase]: For 2013/2013 co-relation queries the response was YES. [2024-06-14 11:59:43,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 316 events. 164/316 cut-off events. For 2013/2013 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1184 event pairs, 35 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 1389. Up to 256 conditions per place. [2024-06-14 11:59:43,537 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 18 changer transitions 0/70 dead transitions. [2024-06-14 11:59:43,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 563 flow [2024-06-14 11:59:43,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:59:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:59:43,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 11:59:43,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 11:59:43,538 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 371 flow. Second operand 8 states and 100 transitions. [2024-06-14 11:59:43,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 563 flow [2024-06-14 11:59:43,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 537 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 11:59:43,542 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 413 flow [2024-06-14 11:59:43,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=413, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-06-14 11:59:43,542 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-14 11:59:43,542 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 413 flow [2024-06-14 11:59:43,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:43,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:43,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:43,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:59:43,543 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 11:59:43,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1768299273, now seen corresponding path program 1 times [2024-06-14 11:59:43,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:43,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525091033] [2024-06-14 11:59:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:43,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:44,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:44,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525091033] [2024-06-14 11:59:44,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525091033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:44,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:44,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:44,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106920384] [2024-06-14 11:59:44,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:44,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:44,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:44,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:44,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:44,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:44,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 413 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:44,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:44,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:44,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:44,601 INFO L124 PetriNetUnfolderBase]: 170/326 cut-off events. [2024-06-14 11:59:44,602 INFO L125 PetriNetUnfolderBase]: For 2469/2469 co-relation queries the response was YES. [2024-06-14 11:59:44,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 326 events. 170/326 cut-off events. For 2469/2469 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1233 event pairs, 34 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 1509. Up to 271 conditions per place. [2024-06-14 11:59:44,617 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 52 selfloop transitions, 16 changer transitions 0/71 dead transitions. [2024-06-14 11:59:44,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 613 flow [2024-06-14 11:59:44,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:59:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:59:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 11:59:44,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 11:59:44,619 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 413 flow. Second operand 8 states and 100 transitions. [2024-06-14 11:59:44,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 613 flow [2024-06-14 11:59:44,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 563 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 11:59:44,622 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 435 flow [2024-06-14 11:59:44,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=435, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-06-14 11:59:44,622 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-14 11:59:44,622 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 435 flow [2024-06-14 11:59:44,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:44,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:44,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:44,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:59:44,623 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 11:59:44,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:44,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1768299490, now seen corresponding path program 2 times [2024-06-14 11:59:44,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:44,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146984776] [2024-06-14 11:59:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:44,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:45,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:45,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146984776] [2024-06-14 11:59:45,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146984776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:45,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:45,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373878609] [2024-06-14 11:59:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:45,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:45,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:45,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:45,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:45,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 435 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:45,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:45,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:45,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:46,212 INFO L124 PetriNetUnfolderBase]: 173/332 cut-off events. [2024-06-14 11:59:46,212 INFO L125 PetriNetUnfolderBase]: For 2748/2748 co-relation queries the response was YES. [2024-06-14 11:59:46,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 332 events. 173/332 cut-off events. For 2748/2748 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1253 event pairs, 36 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 1604. Up to 254 conditions per place. [2024-06-14 11:59:46,214 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 25 changer transitions 0/76 dead transitions. [2024-06-14 11:59:46,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 663 flow [2024-06-14 11:59:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:59:46,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:59:46,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 11:59:46,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-14 11:59:46,217 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 435 flow. Second operand 9 states and 110 transitions. [2024-06-14 11:59:46,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 663 flow [2024-06-14 11:59:46,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 611 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 11:59:46,224 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 504 flow [2024-06-14 11:59:46,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-06-14 11:59:46,225 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-14 11:59:46,225 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 504 flow [2024-06-14 11:59:46,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:46,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:46,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:46,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:59:46,226 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 11:59:46,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:46,226 INFO L85 PathProgramCache]: Analyzing trace with hash 798796899, now seen corresponding path program 2 times [2024-06-14 11:59:46,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:46,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821569555] [2024-06-14 11:59:46,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:46,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:47,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:47,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821569555] [2024-06-14 11:59:47,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821569555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:47,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:47,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:47,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906049812] [2024-06-14 11:59:47,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:47,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:47,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:47,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:47,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:47,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:47,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 504 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:47,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:47,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:47,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:47,367 INFO L124 PetriNetUnfolderBase]: 176/337 cut-off events. [2024-06-14 11:59:47,367 INFO L125 PetriNetUnfolderBase]: For 3263/3263 co-relation queries the response was YES. [2024-06-14 11:59:47,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 337 events. 176/337 cut-off events. For 3263/3263 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1279 event pairs, 37 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 1701. Up to 300 conditions per place. [2024-06-14 11:59:47,370 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 61 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-06-14 11:59:47,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 698 flow [2024-06-14 11:59:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:59:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:59:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 11:59:47,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-14 11:59:47,372 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 504 flow. Second operand 8 states and 94 transitions. [2024-06-14 11:59:47,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 698 flow [2024-06-14 11:59:47,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 630 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 11:59:47,378 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 502 flow [2024-06-14 11:59:47,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2024-06-14 11:59:47,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-14 11:59:47,379 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 502 flow [2024-06-14 11:59:47,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:47,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:47,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:47,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:59:47,381 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 11:59:47,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:47,382 INFO L85 PathProgramCache]: Analyzing trace with hash 798529772, now seen corresponding path program 3 times [2024-06-14 11:59:47,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:47,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303391906] [2024-06-14 11:59:47,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:47,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:48,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:48,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303391906] [2024-06-14 11:59:48,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303391906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:48,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:48,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:48,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642131615] [2024-06-14 11:59:48,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:48,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:48,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:48,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:48,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:48,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:48,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 502 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:48,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:48,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:48,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:48,661 INFO L124 PetriNetUnfolderBase]: 179/346 cut-off events. [2024-06-14 11:59:48,661 INFO L125 PetriNetUnfolderBase]: For 3616/3618 co-relation queries the response was YES. [2024-06-14 11:59:48,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 346 events. 179/346 cut-off events. For 3616/3618 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1338 event pairs, 37 based on Foata normal form. 3/349 useless extension candidates. Maximal degree in co-relation 1748. Up to 261 conditions per place. [2024-06-14 11:59:48,664 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 27 changer transitions 0/82 dead transitions. [2024-06-14 11:59:48,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 792 flow [2024-06-14 11:59:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:59:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:59:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 11:59:48,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 11:59:48,665 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 502 flow. Second operand 8 states and 100 transitions. [2024-06-14 11:59:48,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 792 flow [2024-06-14 11:59:48,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 750 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 11:59:48,669 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 587 flow [2024-06-14 11:59:48,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=587, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-06-14 11:59:48,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-14 11:59:48,670 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 587 flow [2024-06-14 11:59:48,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:48,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:48,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:48,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:59:48,671 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 11:59:48,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash 798529989, now seen corresponding path program 3 times [2024-06-14 11:59:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:48,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161014776] [2024-06-14 11:59:48,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:48,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:49,494 INFO 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 11:59:49,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:49,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161014776] [2024-06-14 11:59:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161014776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:49,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:49,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:49,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197012912] [2024-06-14 11:59:49,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:49,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:49,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:49,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:49,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:49,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:49,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 587 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:49,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:49,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:49,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:49,739 INFO L124 PetriNetUnfolderBase]: 200/380 cut-off events. [2024-06-14 11:59:49,740 INFO L125 PetriNetUnfolderBase]: For 5064/5066 co-relation queries the response was YES. [2024-06-14 11:59:49,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2105 conditions, 380 events. 200/380 cut-off events. For 5064/5066 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1502 event pairs, 35 based on Foata normal form. 4/384 useless extension candidates. Maximal degree in co-relation 2064. Up to 256 conditions per place. [2024-06-14 11:59:49,744 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 56 selfloop transitions, 33 changer transitions 0/92 dead transitions. [2024-06-14 11:59:49,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 92 transitions, 963 flow [2024-06-14 11:59:49,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:59:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:59:49,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-14 11:59:49,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-14 11:59:49,746 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 587 flow. Second operand 8 states and 106 transitions. [2024-06-14 11:59:49,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 92 transitions, 963 flow [2024-06-14 11:59:49,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 913 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-14 11:59:49,757 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 731 flow [2024-06-14 11:59:49,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=731, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-06-14 11:59:49,758 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-14 11:59:49,758 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 731 flow [2024-06-14 11:59:49,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:49,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:49,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:49,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:59:49,759 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 11:59:49,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash 791178339, now seen corresponding path program 4 times [2024-06-14 11:59:49,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:49,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931221361] [2024-06-14 11:59:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:49,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:50,582 INFO 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 11:59:50,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:50,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931221361] [2024-06-14 11:59:50,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931221361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:50,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:50,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61534386] [2024-06-14 11:59:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:50,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:50,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:50,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:50,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 731 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:50,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:50,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:50,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:50,857 INFO L124 PetriNetUnfolderBase]: 202/384 cut-off events. [2024-06-14 11:59:50,857 INFO L125 PetriNetUnfolderBase]: For 5765/5767 co-relation queries the response was YES. [2024-06-14 11:59:50,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 384 events. 202/384 cut-off events. For 5765/5767 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1527 event pairs, 37 based on Foata normal form. 6/390 useless extension candidates. Maximal degree in co-relation 2208. Up to 309 conditions per place. [2024-06-14 11:59:50,860 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 69 selfloop transitions, 20 changer transitions 0/92 dead transitions. [2024-06-14 11:59:50,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 986 flow [2024-06-14 11:59:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:59:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:59:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 11:59:50,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-14 11:59:50,861 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 731 flow. Second operand 8 states and 101 transitions. [2024-06-14 11:59:50,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 986 flow [2024-06-14 11:59:50,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 933 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-14 11:59:50,868 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 781 flow [2024-06-14 11:59:50,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=781, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2024-06-14 11:59:50,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-14 11:59:50,869 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 781 flow [2024-06-14 11:59:50,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:50,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:50,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:50,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:59:50,870 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 11:59:50,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1701005736, now seen corresponding path program 4 times [2024-06-14 11:59:50,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:50,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952151803] [2024-06-14 11:59:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:50,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:52,079 INFO 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 11:59:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:52,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952151803] [2024-06-14 11:59:52,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952151803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:52,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:52,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621101507] [2024-06-14 11:59:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:52,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:52,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:52,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:52,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:52,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:52,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 781 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:52,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:52,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:52,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:52,380 INFO L124 PetriNetUnfolderBase]: 200/381 cut-off events. [2024-06-14 11:59:52,380 INFO L125 PetriNetUnfolderBase]: For 5414/5416 co-relation queries the response was YES. [2024-06-14 11:59:52,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2235 conditions, 381 events. 200/381 cut-off events. For 5414/5416 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1509 event pairs, 37 based on Foata normal form. 3/384 useless extension candidates. Maximal degree in co-relation 2190. Up to 315 conditions per place. [2024-06-14 11:59:52,384 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 19 changer transitions 0/91 dead transitions. [2024-06-14 11:59:52,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 977 flow [2024-06-14 11:59:52,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:59:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:59:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 11:59:52,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-14 11:59:52,386 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 781 flow. Second operand 8 states and 99 transitions. [2024-06-14 11:59:52,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 977 flow [2024-06-14 11:59:52,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 91 transitions, 899 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 11:59:52,393 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 746 flow [2024-06-14 11:59:52,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=746, PETRI_PLACES=94, PETRI_TRANSITIONS=83} [2024-06-14 11:59:52,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-14 11:59:52,394 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 746 flow [2024-06-14 11:59:52,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:52,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:52,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:52,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:59:52,395 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 11:59:52,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1693377039, now seen corresponding path program 1 times [2024-06-14 11:59:52,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:52,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131535941] [2024-06-14 11:59:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:52,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:53,249 INFO 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 11:59:53,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:53,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131535941] [2024-06-14 11:59:53,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131535941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:53,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:53,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:53,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555736342] [2024-06-14 11:59:53,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:53,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:53,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:53,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:53,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 746 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:53,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:53,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:53,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:53,484 INFO L124 PetriNetUnfolderBase]: 197/374 cut-off events. [2024-06-14 11:59:53,484 INFO L125 PetriNetUnfolderBase]: For 5316/5316 co-relation queries the response was YES. [2024-06-14 11:59:53,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2133 conditions, 374 events. 197/374 cut-off events. For 5316/5316 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1460 event pairs, 36 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 2087. Up to 329 conditions per place. [2024-06-14 11:59:53,486 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 77 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2024-06-14 11:59:53,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 946 flow [2024-06-14 11:59:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:59:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:59:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 11:59:53,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-14 11:59:53,488 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 746 flow. Second operand 8 states and 94 transitions. [2024-06-14 11:59:53,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 946 flow [2024-06-14 11:59:53,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 869 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 11:59:53,495 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 697 flow [2024-06-14 11:59:53,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=697, PETRI_PLACES=94, PETRI_TRANSITIONS=83} [2024-06-14 11:59:53,495 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-14 11:59:53,495 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 697 flow [2024-06-14 11:59:53,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:53,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:53,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:53,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:59:53,496 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 11:59:53,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:53,496 INFO L85 PathProgramCache]: Analyzing trace with hash 378967173, now seen corresponding path program 1 times [2024-06-14 11:59:53,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:53,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035157652] [2024-06-14 11:59:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:53,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:54,189 INFO 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 11:59:54,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:54,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035157652] [2024-06-14 11:59:54,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035157652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:54,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:54,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:54,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322611599] [2024-06-14 11:59:54,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:54,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:54,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:54,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:54,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:54,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:54,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:54,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:54,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:54,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:54,475 INFO L124 PetriNetUnfolderBase]: 201/383 cut-off events. [2024-06-14 11:59:54,475 INFO L125 PetriNetUnfolderBase]: For 5684/5684 co-relation queries the response was YES. [2024-06-14 11:59:54,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 383 events. 201/383 cut-off events. For 5684/5684 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1529 event pairs, 14 based on Foata normal form. 2/385 useless extension candidates. Maximal degree in co-relation 2072. Up to 301 conditions per place. [2024-06-14 11:59:54,478 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 82 selfloop transitions, 14 changer transitions 0/99 dead transitions. [2024-06-14 11:59:54,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 99 transitions, 939 flow [2024-06-14 11:59:54,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:59:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:59:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 11:59:54,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-14 11:59:54,480 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 697 flow. Second operand 8 states and 99 transitions. [2024-06-14 11:59:54,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 99 transitions, 939 flow [2024-06-14 11:59:54,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 99 transitions, 896 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 11:59:54,488 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 698 flow [2024-06-14 11:59:54,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-06-14 11:59:54,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-14 11:59:54,488 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 698 flow [2024-06-14 11:59:54,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:54,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:54,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:54,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:59:54,489 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 11:59:54,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:54,489 INFO L85 PathProgramCache]: Analyzing trace with hash 265466253, now seen corresponding path program 2 times [2024-06-14 11:59:54,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:54,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218077004] [2024-06-14 11:59:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:54,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:55,142 INFO 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 11:59:55,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:55,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218077004] [2024-06-14 11:59:55,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218077004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:55,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:55,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:55,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557468969] [2024-06-14 11:59:55,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:55,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:55,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:55,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:55,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:55,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:55,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 698 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:55,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:55,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:55,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:55,494 INFO L124 PetriNetUnfolderBase]: 212/404 cut-off events. [2024-06-14 11:59:55,494 INFO L125 PetriNetUnfolderBase]: For 6234/6234 co-relation queries the response was YES. [2024-06-14 11:59:55,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 404 events. 212/404 cut-off events. For 6234/6234 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1646 event pairs, 35 based on Foata normal form. 2/406 useless extension candidates. Maximal degree in co-relation 2184. Up to 339 conditions per place. [2024-06-14 11:59:55,498 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 81 selfloop transitions, 19 changer transitions 0/103 dead transitions. [2024-06-14 11:59:55,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 1009 flow [2024-06-14 11:59:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:59:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:59:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:59:55,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 11:59:55,499 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 698 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:59:55,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 1009 flow [2024-06-14 11:59:55,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 103 transitions, 965 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:59:55,521 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 812 flow [2024-06-14 11:59:55,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=812, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2024-06-14 11:59:55,522 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-14 11:59:55,522 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 812 flow [2024-06-14 11:59:55,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:55,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:55,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:55,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:59:55,523 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 11:59:55,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:55,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1633635095, now seen corresponding path program 3 times [2024-06-14 11:59:55,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:55,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362163503] [2024-06-14 11:59:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:56,326 INFO 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 11:59:56,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:56,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362163503] [2024-06-14 11:59:56,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362163503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:56,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:56,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:56,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282394349] [2024-06-14 11:59:56,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:56,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:56,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:56,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:56,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:56,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:56,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 812 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:56,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:56,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:56,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:56,649 INFO L124 PetriNetUnfolderBase]: 216/412 cut-off events. [2024-06-14 11:59:56,649 INFO L125 PetriNetUnfolderBase]: For 6976/6976 co-relation queries the response was YES. [2024-06-14 11:59:56,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 412 events. 216/412 cut-off events. For 6976/6976 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1707 event pairs, 48 based on Foata normal form. 2/414 useless extension candidates. Maximal degree in co-relation 2280. Up to 347 conditions per place. [2024-06-14 11:59:56,652 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 85 selfloop transitions, 21 changer transitions 0/109 dead transitions. [2024-06-14 11:59:56,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 109 transitions, 1082 flow [2024-06-14 11:59:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:59:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:59:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 11:59:56,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 11:59:56,654 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 812 flow. Second operand 9 states and 111 transitions. [2024-06-14 11:59:56,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 109 transitions, 1082 flow [2024-06-14 11:59:56,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 109 transitions, 1048 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-14 11:59:56,677 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 859 flow [2024-06-14 11:59:56,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=859, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2024-06-14 11:59:56,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-14 11:59:56,677 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 859 flow [2024-06-14 11:59:56,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:56,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:56,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:56,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:59:56,678 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 11:59:56,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:56,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1855657033, now seen corresponding path program 1 times [2024-06-14 11:59:56,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:56,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225124445] [2024-06-14 11:59:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:56,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:57,677 INFO 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 11:59:57,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:57,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225124445] [2024-06-14 11:59:57,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225124445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:57,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:57,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:59:57,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150634078] [2024-06-14 11:59:57,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:57,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:59:57,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:57,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:59:57,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:59:57,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:57,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 859 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:57,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:57,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:57,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:57,997 INFO L124 PetriNetUnfolderBase]: 225/427 cut-off events. [2024-06-14 11:59:57,997 INFO L125 PetriNetUnfolderBase]: For 7644/7644 co-relation queries the response was YES. [2024-06-14 11:59:58,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 427 events. 225/427 cut-off events. For 7644/7644 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1786 event pairs, 45 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 2398. Up to 359 conditions per place. [2024-06-14 11:59:58,010 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 87 selfloop transitions, 24 changer transitions 0/114 dead transitions. [2024-06-14 11:59:58,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 114 transitions, 1161 flow [2024-06-14 11:59:58,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:59:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:59:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 11:59:58,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-14 11:59:58,015 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 859 flow. Second operand 10 states and 122 transitions. [2024-06-14 11:59:58,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 114 transitions, 1161 flow [2024-06-14 11:59:58,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 1082 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 11:59:58,042 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 882 flow [2024-06-14 11:59:58,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=882, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2024-06-14 11:59:58,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-14 11:59:58,043 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 882 flow [2024-06-14 11:59:58,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:58,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:58,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:58,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:59:58,045 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 11:59:58,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash -898013573, now seen corresponding path program 4 times [2024-06-14 11:59:58,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:58,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180105908] [2024-06-14 11:59:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:58,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:58,804 INFO 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 11:59:58,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:58,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180105908] [2024-06-14 11:59:58,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180105908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:58,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:58,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:58,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674951600] [2024-06-14 11:59:58,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:58,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:58,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:58,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:58,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:58,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:58,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 882 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:58,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:58,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:58,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:59,141 INFO L124 PetriNetUnfolderBase]: 229/435 cut-off events. [2024-06-14 11:59:59,141 INFO L125 PetriNetUnfolderBase]: For 8167/8167 co-relation queries the response was YES. [2024-06-14 11:59:59,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 435 events. 229/435 cut-off events. For 8167/8167 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1822 event pairs, 30 based on Foata normal form. 2/437 useless extension candidates. Maximal degree in co-relation 2452. Up to 370 conditions per place. [2024-06-14 11:59:59,145 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 90 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-06-14 11:59:59,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 1152 flow [2024-06-14 11:59:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:59:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:59:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 11:59:59,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 11:59:59,146 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 882 flow. Second operand 9 states and 111 transitions. [2024-06-14 11:59:59,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 1152 flow [2024-06-14 11:59:59,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 1086 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:59:59,158 INFO L231 Difference]: Finished difference. Result has 114 places, 100 transitions, 878 flow [2024-06-14 11:59:59,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=878, PETRI_PLACES=114, PETRI_TRANSITIONS=100} [2024-06-14 11:59:59,158 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-14 11:59:59,159 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 100 transitions, 878 flow [2024-06-14 11:59:59,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:59,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:59,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:59,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 11:59:59,159 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 11:59:59,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash -782722403, now seen corresponding path program 5 times [2024-06-14 11:59:59,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:59,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708863940] [2024-06-14 11:59:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:59,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:59,812 INFO 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 11:59:59,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:59,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708863940] [2024-06-14 11:59:59,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708863940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:59,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:59,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:59:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447284901] [2024-06-14 11:59:59,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:59,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:59:59,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:59,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:59:59,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:59:59,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 11:59:59,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 100 transitions, 878 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:59,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:59,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 11:59:59,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:00,080 INFO L124 PetriNetUnfolderBase]: 239/455 cut-off events. [2024-06-14 12:00:00,080 INFO L125 PetriNetUnfolderBase]: For 8728/8728 co-relation queries the response was YES. [2024-06-14 12:00:00,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2581 conditions, 455 events. 239/455 cut-off events. For 8728/8728 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1945 event pairs, 54 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2527. Up to 401 conditions per place. [2024-06-14 12:00:00,085 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 98 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2024-06-14 12:00:00,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 117 transitions, 1188 flow [2024-06-14 12:00:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 12:00:00,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:00:00,086 INFO L175 Difference]: Start difference. First operand has 114 places, 100 transitions, 878 flow. Second operand 9 states and 108 transitions. [2024-06-14 12:00:00,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 117 transitions, 1188 flow [2024-06-14 12:00:00,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 1144 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:00:00,097 INFO L231 Difference]: Finished difference. Result has 119 places, 105 transitions, 938 flow [2024-06-14 12:00:00,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=938, PETRI_PLACES=119, PETRI_TRANSITIONS=105} [2024-06-14 12:00:00,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-14 12:00:00,098 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 105 transitions, 938 flow [2024-06-14 12:00:00,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:00,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:00,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:00,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:00:00,099 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 12:00:00,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:00,099 INFO L85 PathProgramCache]: Analyzing trace with hash -898008613, now seen corresponding path program 2 times [2024-06-14 12:00:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388956799] [2024-06-14 12:00:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:00,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:00,993 INFO 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 12:00:00,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:00,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388956799] [2024-06-14 12:00:00,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388956799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:00,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:00,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588495742] [2024-06-14 12:00:00,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:00,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:00,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:00,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:00,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:01,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:01,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 105 transitions, 938 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:01,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:01,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:01,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:01,361 INFO L124 PetriNetUnfolderBase]: 248/470 cut-off events. [2024-06-14 12:00:01,376 INFO L125 PetriNetUnfolderBase]: For 9489/9489 co-relation queries the response was YES. [2024-06-14 12:00:01,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 470 events. 248/470 cut-off events. For 9489/9489 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2031 event pairs, 54 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 2640. Up to 411 conditions per place. [2024-06-14 12:00:01,380 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 19 changer transitions 0/123 dead transitions. [2024-06-14 12:00:01,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 123 transitions, 1264 flow [2024-06-14 12:00:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:00:01,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:00:01,381 INFO L175 Difference]: Start difference. First operand has 119 places, 105 transitions, 938 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:00:01,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 123 transitions, 1264 flow [2024-06-14 12:00:01,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 123 transitions, 1224 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 12:00:01,410 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 998 flow [2024-06-14 12:00:01,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=998, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2024-06-14 12:00:01,415 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-14 12:00:01,415 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 998 flow [2024-06-14 12:00:01,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:01,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:01,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:01,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:00:01,416 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 12:00:01,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1791700543, now seen corresponding path program 3 times [2024-06-14 12:00:01,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:01,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572221495] [2024-06-14 12:00:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:01,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:02,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:02,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572221495] [2024-06-14 12:00:02,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572221495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:02,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:02,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:02,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430291513] [2024-06-14 12:00:02,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:02,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:02,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:02,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:02,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:02,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 998 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:02,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:02,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:02,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:02,894 INFO L124 PetriNetUnfolderBase]: 271/512 cut-off events. [2024-06-14 12:00:02,894 INFO L125 PetriNetUnfolderBase]: For 10412/10412 co-relation queries the response was YES. [2024-06-14 12:00:02,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2970 conditions, 512 events. 271/512 cut-off events. For 10412/10412 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2285 event pairs, 53 based on Foata normal form. 1/513 useless extension candidates. Maximal degree in co-relation 2911. Up to 438 conditions per place. [2024-06-14 12:00:02,899 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 25 changer transitions 0/134 dead transitions. [2024-06-14 12:00:02,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 1466 flow [2024-06-14 12:00:02,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:00:02,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-14 12:00:02,922 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 998 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:00:02,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 1466 flow [2024-06-14 12:00:02,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 134 transitions, 1402 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:02,938 INFO L231 Difference]: Finished difference. Result has 130 places, 120 transitions, 1133 flow [2024-06-14 12:00:02,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1133, PETRI_PLACES=130, PETRI_TRANSITIONS=120} [2024-06-14 12:00:02,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-14 12:00:02,939 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 120 transitions, 1133 flow [2024-06-14 12:00:02,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:02,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:02,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:02,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:00:02,940 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 12:00:02,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1791707301, now seen corresponding path program 1 times [2024-06-14 12:00:02,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:02,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201277014] [2024-06-14 12:00:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:02,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:03,749 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 12:00:03,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:03,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201277014] [2024-06-14 12:00:03,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201277014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:03,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:03,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:00:03,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141339630] [2024-06-14 12:00:03,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:03,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:00:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:00:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:00:03,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:03,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 120 transitions, 1133 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:03,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:03,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:03,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:04,029 INFO L124 PetriNetUnfolderBase]: 277/522 cut-off events. [2024-06-14 12:00:04,030 INFO L125 PetriNetUnfolderBase]: For 11494/11494 co-relation queries the response was YES. [2024-06-14 12:00:04,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 522 events. 277/522 cut-off events. For 11494/11494 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2324 event pairs, 52 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 3047. Up to 452 conditions per place. [2024-06-14 12:00:04,033 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 22 changer transitions 0/135 dead transitions. [2024-06-14 12:00:04,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 1485 flow [2024-06-14 12:00:04,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:04,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 12:00:04,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-14 12:00:04,035 INFO L175 Difference]: Start difference. First operand has 130 places, 120 transitions, 1133 flow. Second operand 9 states and 112 transitions. [2024-06-14 12:00:04,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 1485 flow [2024-06-14 12:00:04,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 135 transitions, 1432 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 12:00:04,050 INFO L231 Difference]: Finished difference. Result has 135 places, 124 transitions, 1205 flow [2024-06-14 12:00:04,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1205, PETRI_PLACES=135, PETRI_TRANSITIONS=124} [2024-06-14 12:00:04,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-14 12:00:04,051 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 124 transitions, 1205 flow [2024-06-14 12:00:04,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:04,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:04,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:04,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:00:04,052 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 12:00:04,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:04,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2131648787, now seen corresponding path program 4 times [2024-06-14 12:00:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:04,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528311803] [2024-06-14 12:00:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:04,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:05,062 INFO 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 12:00:05,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:05,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528311803] [2024-06-14 12:00:05,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528311803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:05,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:05,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:05,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95800493] [2024-06-14 12:00:05,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:05,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:05,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:05,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:05,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:05,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:05,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 124 transitions, 1205 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:05,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:05,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:05,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:05,440 INFO L124 PetriNetUnfolderBase]: 283/534 cut-off events. [2024-06-14 12:00:05,441 INFO L125 PetriNetUnfolderBase]: For 12357/12357 co-relation queries the response was YES. [2024-06-14 12:00:05,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3267 conditions, 534 events. 283/534 cut-off events. For 12357/12357 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2399 event pairs, 53 based on Foata normal form. 2/536 useless extension candidates. Maximal degree in co-relation 3202. Up to 444 conditions per place. [2024-06-14 12:00:05,445 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 30 changer transitions 0/141 dead transitions. [2024-06-14 12:00:05,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 141 transitions, 1651 flow [2024-06-14 12:00:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:00:05,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:00:05,447 INFO L175 Difference]: Start difference. First operand has 135 places, 124 transitions, 1205 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:00:05,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 141 transitions, 1651 flow [2024-06-14 12:00:05,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 141 transitions, 1562 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-14 12:00:05,468 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 1268 flow [2024-06-14 12:00:05,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1268, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2024-06-14 12:00:05,468 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-14 12:00:05,469 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 1268 flow [2024-06-14 12:00:05,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:05,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:05,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:05,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:00:05,469 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 12:00:05,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash 383553933, now seen corresponding path program 6 times [2024-06-14 12:00:05,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346565519] [2024-06-14 12:00:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:05,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:06,235 INFO 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 12:00:06,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:06,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346565519] [2024-06-14 12:00:06,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346565519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:06,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:06,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:00:06,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949437122] [2024-06-14 12:00:06,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:06,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:00:06,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:06,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:00:06,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:00:06,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:06,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 1268 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:06,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:06,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:06,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:06,548 INFO L124 PetriNetUnfolderBase]: 287/542 cut-off events. [2024-06-14 12:00:06,548 INFO L125 PetriNetUnfolderBase]: For 13388/13388 co-relation queries the response was YES. [2024-06-14 12:00:06,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3337 conditions, 542 events. 287/542 cut-off events. For 13388/13388 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2453 event pairs, 54 based on Foata normal form. 2/544 useless extension candidates. Maximal degree in co-relation 3271. Up to 482 conditions per place. [2024-06-14 12:00:06,553 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 119 selfloop transitions, 16 changer transitions 0/138 dead transitions. [2024-06-14 12:00:06,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 138 transitions, 1580 flow [2024-06-14 12:00:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:06,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 12:00:06,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-14 12:00:06,555 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 1268 flow. Second operand 9 states and 105 transitions. [2024-06-14 12:00:06,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 138 transitions, 1580 flow [2024-06-14 12:00:06,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 138 transitions, 1521 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-14 12:00:06,575 INFO L231 Difference]: Finished difference. Result has 143 places, 129 transitions, 1267 flow [2024-06-14 12:00:06,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1267, PETRI_PLACES=143, PETRI_TRANSITIONS=129} [2024-06-14 12:00:06,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-14 12:00:06,577 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 129 transitions, 1267 flow [2024-06-14 12:00:06,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:06,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:06,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:06,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:00:06,578 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 12:00:06,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:06,578 INFO L85 PathProgramCache]: Analyzing trace with hash 901827525, now seen corresponding path program 5 times [2024-06-14 12:00:06,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:06,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092038107] [2024-06-14 12:00:06,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:06,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:07,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:07,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092038107] [2024-06-14 12:00:07,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092038107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:07,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:07,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:07,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773964234] [2024-06-14 12:00:07,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:07,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:07,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:07,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:07,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:07,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:07,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 129 transitions, 1267 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:07,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:07,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:07,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:08,061 INFO L124 PetriNetUnfolderBase]: 290/549 cut-off events. [2024-06-14 12:00:08,076 INFO L125 PetriNetUnfolderBase]: For 13584/13584 co-relation queries the response was YES. [2024-06-14 12:00:08,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3401 conditions, 549 events. 290/549 cut-off events. For 13584/13584 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2510 event pairs, 44 based on Foata normal form. 1/550 useless extension candidates. Maximal degree in co-relation 3333. Up to 456 conditions per place. [2024-06-14 12:00:08,081 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 109 selfloop transitions, 33 changer transitions 0/145 dead transitions. [2024-06-14 12:00:08,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 145 transitions, 1633 flow [2024-06-14 12:00:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:00:08,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-14 12:00:08,087 INFO L175 Difference]: Start difference. First operand has 143 places, 129 transitions, 1267 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:00:08,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 145 transitions, 1633 flow [2024-06-14 12:00:08,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 145 transitions, 1532 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-14 12:00:08,120 INFO L231 Difference]: Finished difference. Result has 141 places, 133 transitions, 1301 flow [2024-06-14 12:00:08,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1301, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2024-06-14 12:00:08,121 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-14 12:00:08,121 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 1301 flow [2024-06-14 12:00:08,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:08,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:08,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:08,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:00:08,122 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 12:00:08,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:08,122 INFO L85 PathProgramCache]: Analyzing trace with hash 383738383, now seen corresponding path program 6 times [2024-06-14 12:00:08,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:08,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306126407] [2024-06-14 12:00:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:08,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:09,320 INFO 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 12:00:09,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:09,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306126407] [2024-06-14 12:00:09,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306126407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:09,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:09,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:09,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864962942] [2024-06-14 12:00:09,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:09,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:09,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:09,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:09,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 1301 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:09,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:09,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:09,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:09,698 INFO L124 PetriNetUnfolderBase]: 307/582 cut-off events. [2024-06-14 12:00:09,699 INFO L125 PetriNetUnfolderBase]: For 16505/16505 co-relation queries the response was YES. [2024-06-14 12:00:09,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 582 events. 307/582 cut-off events. For 16505/16505 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2711 event pairs, 52 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3704. Up to 438 conditions per place. [2024-06-14 12:00:09,703 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 46 changer transitions 0/150 dead transitions. [2024-06-14 12:00:09,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 1797 flow [2024-06-14 12:00:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 12:00:09,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-14 12:00:09,705 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 1301 flow. Second operand 9 states and 113 transitions. [2024-06-14 12:00:09,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 1797 flow [2024-06-14 12:00:09,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 150 transitions, 1702 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:09,730 INFO L231 Difference]: Finished difference. Result has 143 places, 138 transitions, 1419 flow [2024-06-14 12:00:09,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1419, PETRI_PLACES=143, PETRI_TRANSITIONS=138} [2024-06-14 12:00:09,731 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-14 12:00:09,731 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 138 transitions, 1419 flow [2024-06-14 12:00:09,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:09,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:09,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:09,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:00:09,732 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 12:00:09,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:09,732 INFO L85 PathProgramCache]: Analyzing trace with hash 383738631, now seen corresponding path program 2 times [2024-06-14 12:00:09,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:09,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805989143] [2024-06-14 12:00:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:09,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:10,769 INFO 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 12:00:10,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:10,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805989143] [2024-06-14 12:00:10,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805989143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:10,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:10,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:10,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105085861] [2024-06-14 12:00:10,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:10,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:10,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:10,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:10,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:10,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:10,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 138 transitions, 1419 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:10,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:10,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:10,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:11,112 INFO L124 PetriNetUnfolderBase]: 302/573 cut-off events. [2024-06-14 12:00:11,113 INFO L125 PetriNetUnfolderBase]: For 16626/16626 co-relation queries the response was YES. [2024-06-14 12:00:11,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3707 conditions, 573 events. 302/573 cut-off events. For 16626/16626 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2655 event pairs, 53 based on Foata normal form. 2/575 useless extension candidates. Maximal degree in co-relation 3640. Up to 471 conditions per place. [2024-06-14 12:00:11,118 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 34 changer transitions 0/148 dead transitions. [2024-06-14 12:00:11,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 148 transitions, 1733 flow [2024-06-14 12:00:11,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 12:00:11,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 12:00:11,119 INFO L175 Difference]: Start difference. First operand has 143 places, 138 transitions, 1419 flow. Second operand 9 states and 111 transitions. [2024-06-14 12:00:11,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 148 transitions, 1733 flow [2024-06-14 12:00:11,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 148 transitions, 1622 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-14 12:00:11,146 INFO L231 Difference]: Finished difference. Result has 146 places, 138 transitions, 1386 flow [2024-06-14 12:00:11,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1386, PETRI_PLACES=146, PETRI_TRANSITIONS=138} [2024-06-14 12:00:11,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-14 12:00:11,147 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 1386 flow [2024-06-14 12:00:11,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:11,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:11,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:11,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:00:11,148 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 12:00:11,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:11,150 INFO L85 PathProgramCache]: Analyzing trace with hash 383731873, now seen corresponding path program 7 times [2024-06-14 12:00:11,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:11,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578795596] [2024-06-14 12:00:11,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:11,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:12,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:12,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578795596] [2024-06-14 12:00:12,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578795596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:12,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:12,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:12,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498341133] [2024-06-14 12:00:12,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:12,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:12,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:12,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:12,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:12,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:12,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 1386 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:12,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:12,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:12,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:12,965 INFO L124 PetriNetUnfolderBase]: 300/570 cut-off events. [2024-06-14 12:00:12,965 INFO L125 PetriNetUnfolderBase]: For 14469/14469 co-relation queries the response was YES. [2024-06-14 12:00:12,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3599 conditions, 570 events. 300/570 cut-off events. For 14469/14469 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2645 event pairs, 52 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 3531. Up to 462 conditions per place. [2024-06-14 12:00:12,970 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 110 selfloop transitions, 38 changer transitions 0/151 dead transitions. [2024-06-14 12:00:12,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 151 transitions, 1761 flow [2024-06-14 12:00:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 12:00:12,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 12:00:12,981 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 1386 flow. Second operand 9 states and 111 transitions. [2024-06-14 12:00:12,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 151 transitions, 1761 flow [2024-06-14 12:00:13,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 151 transitions, 1648 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:13,010 INFO L231 Difference]: Finished difference. Result has 148 places, 141 transitions, 1430 flow [2024-06-14 12:00:13,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1430, PETRI_PLACES=148, PETRI_TRANSITIONS=141} [2024-06-14 12:00:13,011 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-14 12:00:13,011 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 141 transitions, 1430 flow [2024-06-14 12:00:13,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:13,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:13,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:13,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:00:13,012 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 12:00:13,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:13,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1191747187, now seen corresponding path program 7 times [2024-06-14 12:00:13,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:13,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272674899] [2024-06-14 12:00:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:13,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:13,723 INFO 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 12:00:13,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:13,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272674899] [2024-06-14 12:00:13,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272674899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:13,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:13,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:00:13,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418928942] [2024-06-14 12:00:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:13,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:00:13,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:13,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:00:13,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:00:13,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:13,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 141 transitions, 1430 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:13,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:13,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:13,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:13,974 INFO L124 PetriNetUnfolderBase]: 297/565 cut-off events. [2024-06-14 12:00:13,975 INFO L125 PetriNetUnfolderBase]: For 14643/14643 co-relation queries the response was YES. [2024-06-14 12:00:13,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3534 conditions, 565 events. 297/565 cut-off events. For 14643/14643 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2619 event pairs, 54 based on Foata normal form. 2/567 useless extension candidates. Maximal degree in co-relation 3464. Up to 484 conditions per place. [2024-06-14 12:00:14,001 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 126 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-06-14 12:00:14,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 150 transitions, 1750 flow [2024-06-14 12:00:14,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:00:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:00:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 12:00:14,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-14 12:00:14,006 INFO L175 Difference]: Start difference. First operand has 148 places, 141 transitions, 1430 flow. Second operand 8 states and 97 transitions. [2024-06-14 12:00:14,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 150 transitions, 1750 flow [2024-06-14 12:00:14,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 150 transitions, 1653 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:14,062 INFO L231 Difference]: Finished difference. Result has 149 places, 142 transitions, 1387 flow [2024-06-14 12:00:14,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1387, PETRI_PLACES=149, PETRI_TRANSITIONS=142} [2024-06-14 12:00:14,063 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-14 12:00:14,063 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 1387 flow [2024-06-14 12:00:14,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:14,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:14,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:14,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:00:14,064 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 12:00:14,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:14,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1243274467, now seen corresponding path program 8 times [2024-06-14 12:00:14,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:14,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572561391] [2024-06-14 12:00:14,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:14,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:15,104 INFO 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 12:00:15,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:15,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572561391] [2024-06-14 12:00:15,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572561391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:15,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:15,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:15,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337363402] [2024-06-14 12:00:15,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:15,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:15,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:15,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:15,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:15,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 142 transitions, 1387 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:15,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:15,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:15,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:15,456 INFO L124 PetriNetUnfolderBase]: 313/593 cut-off events. [2024-06-14 12:00:15,456 INFO L125 PetriNetUnfolderBase]: For 16440/16440 co-relation queries the response was YES. [2024-06-14 12:00:15,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3812 conditions, 593 events. 313/593 cut-off events. For 16440/16440 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2785 event pairs, 54 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3742. Up to 478 conditions per place. [2024-06-14 12:00:15,462 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 31 changer transitions 0/157 dead transitions. [2024-06-14 12:00:15,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 157 transitions, 1903 flow [2024-06-14 12:00:15,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 12:00:15,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-14 12:00:15,470 INFO L175 Difference]: Start difference. First operand has 149 places, 142 transitions, 1387 flow. Second operand 9 states and 113 transitions. [2024-06-14 12:00:15,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 157 transitions, 1903 flow [2024-06-14 12:00:15,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 157 transitions, 1804 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:15,503 INFO L231 Difference]: Finished difference. Result has 151 places, 147 transitions, 1468 flow [2024-06-14 12:00:15,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1468, PETRI_PLACES=151, PETRI_TRANSITIONS=147} [2024-06-14 12:00:15,504 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-14 12:00:15,504 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 147 transitions, 1468 flow [2024-06-14 12:00:15,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:15,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:15,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:15,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:00:15,505 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 12:00:15,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1243280977, now seen corresponding path program 9 times [2024-06-14 12:00:15,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:15,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868013386] [2024-06-14 12:00:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:15,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:17,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:17,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868013386] [2024-06-14 12:00:17,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868013386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:17,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:17,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:17,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802232415] [2024-06-14 12:00:17,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:17,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:17,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:17,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:17,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:17,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:17,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 147 transitions, 1468 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:17,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:17,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:17,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:17,550 INFO L124 PetriNetUnfolderBase]: 311/590 cut-off events. [2024-06-14 12:00:17,551 INFO L125 PetriNetUnfolderBase]: For 16034/16034 co-relation queries the response was YES. [2024-06-14 12:00:17,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3787 conditions, 590 events. 311/590 cut-off events. For 16034/16034 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2768 event pairs, 54 based on Foata normal form. 1/591 useless extension candidates. Maximal degree in co-relation 3716. Up to 492 conditions per place. [2024-06-14 12:00:17,578 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 128 selfloop transitions, 30 changer transitions 0/161 dead transitions. [2024-06-14 12:00:17,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 161 transitions, 1928 flow [2024-06-14 12:00:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:17,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:17,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 12:00:17,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 12:00:17,580 INFO L175 Difference]: Start difference. First operand has 151 places, 147 transitions, 1468 flow. Second operand 9 states and 111 transitions. [2024-06-14 12:00:17,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 161 transitions, 1928 flow [2024-06-14 12:00:17,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 1802 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-14 12:00:17,639 INFO L231 Difference]: Finished difference. Result has 157 places, 153 transitions, 1556 flow [2024-06-14 12:00:17,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1556, PETRI_PLACES=157, PETRI_TRANSITIONS=153} [2024-06-14 12:00:17,651 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-14 12:00:17,651 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 153 transitions, 1556 flow [2024-06-14 12:00:17,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:17,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:17,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:17,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:00:17,652 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 12:00:17,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:17,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1237024867, now seen corresponding path program 10 times [2024-06-14 12:00:17,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:17,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563209200] [2024-06-14 12:00:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:17,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:18,893 INFO 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 12:00:18,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:18,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563209200] [2024-06-14 12:00:18,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563209200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:18,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:18,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:18,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200918749] [2024-06-14 12:00:18,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:18,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:18,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:18,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:18,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:18,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:18,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 153 transitions, 1556 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:18,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:18,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:18,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:19,328 INFO L124 PetriNetUnfolderBase]: 314/597 cut-off events. [2024-06-14 12:00:19,328 INFO L125 PetriNetUnfolderBase]: For 16712/16712 co-relation queries the response was YES. [2024-06-14 12:00:19,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3866 conditions, 597 events. 314/597 cut-off events. For 16712/16712 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2825 event pairs, 54 based on Foata normal form. 1/598 useless extension candidates. Maximal degree in co-relation 3791. Up to 428 conditions per place. [2024-06-14 12:00:19,333 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 109 selfloop transitions, 56 changer transitions 0/168 dead transitions. [2024-06-14 12:00:19,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 168 transitions, 2111 flow [2024-06-14 12:00:19,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:19,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 12:00:19,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-14 12:00:19,348 INFO L175 Difference]: Start difference. First operand has 157 places, 153 transitions, 1556 flow. Second operand 9 states and 113 transitions. [2024-06-14 12:00:19,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 168 transitions, 2111 flow [2024-06-14 12:00:19,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 168 transitions, 2027 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-14 12:00:19,391 INFO L231 Difference]: Finished difference. Result has 163 places, 159 transitions, 1735 flow [2024-06-14 12:00:19,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1735, PETRI_PLACES=163, PETRI_TRANSITIONS=159} [2024-06-14 12:00:19,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-14 12:00:19,393 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 159 transitions, 1735 flow [2024-06-14 12:00:19,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:19,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:19,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:19,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:00:19,393 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 12:00:19,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:19,394 INFO L85 PathProgramCache]: Analyzing trace with hash -963661587, now seen corresponding path program 11 times [2024-06-14 12:00:19,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:19,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580261576] [2024-06-14 12:00:19,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:19,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:20,746 INFO 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 12:00:20,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:20,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580261576] [2024-06-14 12:00:20,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580261576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:20,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:20,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:20,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029191682] [2024-06-14 12:00:20,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:20,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:20,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:20,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:20,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:20,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 159 transitions, 1735 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:20,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:20,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:20,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:21,166 INFO L124 PetriNetUnfolderBase]: 317/604 cut-off events. [2024-06-14 12:00:21,166 INFO L125 PetriNetUnfolderBase]: For 17850/17850 co-relation queries the response was YES. [2024-06-14 12:00:21,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 604 events. 317/604 cut-off events. For 17850/17850 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2881 event pairs, 54 based on Foata normal form. 1/605 useless extension candidates. Maximal degree in co-relation 3944. Up to 432 conditions per place. [2024-06-14 12:00:21,186 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 110 selfloop transitions, 57 changer transitions 0/170 dead transitions. [2024-06-14 12:00:21,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 170 transitions, 2221 flow [2024-06-14 12:00:21,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:21,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:00:21,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-14 12:00:21,196 INFO L175 Difference]: Start difference. First operand has 163 places, 159 transitions, 1735 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:00:21,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 170 transitions, 2221 flow [2024-06-14 12:00:21,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 170 transitions, 2041 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-14 12:00:21,270 INFO L231 Difference]: Finished difference. Result has 167 places, 161 transitions, 1732 flow [2024-06-14 12:00:21,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1732, PETRI_PLACES=167, PETRI_TRANSITIONS=161} [2024-06-14 12:00:21,271 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-14 12:00:21,271 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 161 transitions, 1732 flow [2024-06-14 12:00:21,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:21,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:21,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:21,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:00:21,272 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 12:00:21,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:21,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1006802189, now seen corresponding path program 3 times [2024-06-14 12:00:21,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:21,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336245815] [2024-06-14 12:00:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:21,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:22,514 INFO 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 12:00:22,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:22,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336245815] [2024-06-14 12:00:22,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336245815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:22,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:22,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:22,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698804168] [2024-06-14 12:00:22,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:22,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:22,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:22,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:22,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:22,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:22,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 161 transitions, 1732 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:22,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:22,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:22,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:22,928 INFO L124 PetriNetUnfolderBase]: 320/608 cut-off events. [2024-06-14 12:00:22,928 INFO L125 PetriNetUnfolderBase]: For 17893/17893 co-relation queries the response was YES. [2024-06-14 12:00:22,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4010 conditions, 608 events. 320/608 cut-off events. For 17893/17893 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2881 event pairs, 76 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 3931. Up to 538 conditions per place. [2024-06-14 12:00:22,933 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 19 changer transitions 0/173 dead transitions. [2024-06-14 12:00:22,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 173 transitions, 2190 flow [2024-06-14 12:00:22,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 12:00:22,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-14 12:00:22,935 INFO L175 Difference]: Start difference. First operand has 167 places, 161 transitions, 1732 flow. Second operand 10 states and 116 transitions. [2024-06-14 12:00:22,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 173 transitions, 2190 flow [2024-06-14 12:00:22,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 173 transitions, 2045 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 12:00:22,969 INFO L231 Difference]: Finished difference. Result has 171 places, 163 transitions, 1650 flow [2024-06-14 12:00:22,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1650, PETRI_PLACES=171, PETRI_TRANSITIONS=163} [2024-06-14 12:00:22,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-14 12:00:22,972 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 163 transitions, 1650 flow [2024-06-14 12:00:22,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:22,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:22,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:22,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:00:22,977 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 12:00:22,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:22,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1007099107, now seen corresponding path program 12 times [2024-06-14 12:00:22,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:22,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138411036] [2024-06-14 12:00:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:22,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:24,162 INFO 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 12:00:24,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138411036] [2024-06-14 12:00:24,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138411036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:24,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:24,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:24,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949209029] [2024-06-14 12:00:24,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:24,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:24,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:24,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:24,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:24,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:24,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 163 transitions, 1650 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:24,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:24,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:24,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:24,572 INFO L124 PetriNetUnfolderBase]: 318/605 cut-off events. [2024-06-14 12:00:24,572 INFO L125 PetriNetUnfolderBase]: For 17507/17507 co-relation queries the response was YES. [2024-06-14 12:00:24,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3841 conditions, 605 events. 318/605 cut-off events. For 17507/17507 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2855 event pairs, 76 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 3762. Up to 542 conditions per place. [2024-06-14 12:00:24,576 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 15 changer transitions 0/171 dead transitions. [2024-06-14 12:00:24,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 171 transitions, 2004 flow [2024-06-14 12:00:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:24,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 12:00:24,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-14 12:00:24,577 INFO L175 Difference]: Start difference. First operand has 171 places, 163 transitions, 1650 flow. Second operand 9 states and 104 transitions. [2024-06-14 12:00:24,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 171 transitions, 2004 flow [2024-06-14 12:00:24,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 171 transitions, 1924 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:24,613 INFO L231 Difference]: Finished difference. Result has 172 places, 163 transitions, 1605 flow [2024-06-14 12:00:24,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1605, PETRI_PLACES=172, PETRI_TRANSITIONS=163} [2024-06-14 12:00:24,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-14 12:00:24,614 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 163 transitions, 1605 flow [2024-06-14 12:00:24,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:24,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:24,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:24,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:00:24,615 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 12:00:24,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:24,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1007098859, now seen corresponding path program 4 times [2024-06-14 12:00:24,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:24,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100188376] [2024-06-14 12:00:24,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:24,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:26,216 INFO 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 12:00:26,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:26,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100188376] [2024-06-14 12:00:26,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100188376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:26,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:26,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:26,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786441316] [2024-06-14 12:00:26,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:26,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:26,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:26,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:26,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:26,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:26,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 163 transitions, 1605 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:26,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:26,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:26,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:26,666 INFO L124 PetriNetUnfolderBase]: 316/602 cut-off events. [2024-06-14 12:00:26,667 INFO L125 PetriNetUnfolderBase]: For 17206/17206 co-relation queries the response was YES. [2024-06-14 12:00:26,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 602 events. 316/602 cut-off events. For 17206/17206 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2858 event pairs, 76 based on Foata normal form. 1/603 useless extension candidates. Maximal degree in co-relation 3675. Up to 539 conditions per place. [2024-06-14 12:00:26,671 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 15 changer transitions 0/171 dead transitions. [2024-06-14 12:00:26,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 171 transitions, 1959 flow [2024-06-14 12:00:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:26,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 12:00:26,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-14 12:00:26,672 INFO L175 Difference]: Start difference. First operand has 172 places, 163 transitions, 1605 flow. Second operand 9 states and 104 transitions. [2024-06-14 12:00:26,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 171 transitions, 1959 flow [2024-06-14 12:00:26,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 171 transitions, 1901 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:26,709 INFO L231 Difference]: Finished difference. Result has 172 places, 163 transitions, 1582 flow [2024-06-14 12:00:26,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=172, PETRI_TRANSITIONS=163} [2024-06-14 12:00:26,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-14 12:00:26,709 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 163 transitions, 1582 flow [2024-06-14 12:00:26,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:26,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:26,710 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 12:00:26,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:00:26,710 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 12:00:26,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash 960608963, now seen corresponding path program 1 times [2024-06-14 12:00:26,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:26,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108103780] [2024-06-14 12:00:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:26,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:27,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:27,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108103780] [2024-06-14 12:00:27,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108103780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:27,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:27,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:27,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940782384] [2024-06-14 12:00:27,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:27,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:27,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:27,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:27,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:27,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:27,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 163 transitions, 1582 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:27,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:27,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:27,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:27,807 INFO L124 PetriNetUnfolderBase]: 329/632 cut-off events. [2024-06-14 12:00:27,807 INFO L125 PetriNetUnfolderBase]: For 18980/18980 co-relation queries the response was YES. [2024-06-14 12:00:27,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3844 conditions, 632 events. 329/632 cut-off events. For 18980/18980 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3086 event pairs, 44 based on Foata normal form. 2/634 useless extension candidates. Maximal degree in co-relation 3764. Up to 528 conditions per place. [2024-06-14 12:00:27,812 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 160 selfloop transitions, 21 changer transitions 0/184 dead transitions. [2024-06-14 12:00:27,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 184 transitions, 2010 flow [2024-06-14 12:00:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:00:27,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-14 12:00:27,815 INFO L175 Difference]: Start difference. First operand has 172 places, 163 transitions, 1582 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:00:27,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 184 transitions, 2010 flow [2024-06-14 12:00:27,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 184 transitions, 1973 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:27,854 INFO L231 Difference]: Finished difference. Result has 176 places, 166 transitions, 1621 flow [2024-06-14 12:00:27,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1621, PETRI_PLACES=176, PETRI_TRANSITIONS=166} [2024-06-14 12:00:27,856 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-14 12:00:27,858 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 166 transitions, 1621 flow [2024-06-14 12:00:27,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:27,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:27,859 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 12:00:27,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:00:27,860 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 12:00:27,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:27,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1713289199, now seen corresponding path program 2 times [2024-06-14 12:00:27,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:27,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092304862] [2024-06-14 12:00:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:27,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:28,797 INFO 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 12:00:28,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:28,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092304862] [2024-06-14 12:00:28,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092304862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:28,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:28,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:28,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164317166] [2024-06-14 12:00:28,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:28,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:28,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:28,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:28,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:28,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:28,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 166 transitions, 1621 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:28,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:28,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:28,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:29,157 INFO L124 PetriNetUnfolderBase]: 333/640 cut-off events. [2024-06-14 12:00:29,157 INFO L125 PetriNetUnfolderBase]: For 19711/19711 co-relation queries the response was YES. [2024-06-14 12:00:29,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 640 events. 333/640 cut-off events. For 19711/19711 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3124 event pairs, 51 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 3866. Up to 545 conditions per place. [2024-06-14 12:00:29,163 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 22 changer transitions 0/183 dead transitions. [2024-06-14 12:00:29,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 183 transitions, 2035 flow [2024-06-14 12:00:29,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:00:29,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 12:00:29,164 INFO L175 Difference]: Start difference. First operand has 176 places, 166 transitions, 1621 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:00:29,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 183 transitions, 2035 flow [2024-06-14 12:00:29,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 183 transitions, 1989 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:00:29,208 INFO L231 Difference]: Finished difference. Result has 180 places, 167 transitions, 1639 flow [2024-06-14 12:00:29,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1639, PETRI_PLACES=180, PETRI_TRANSITIONS=167} [2024-06-14 12:00:29,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-14 12:00:29,208 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 167 transitions, 1639 flow [2024-06-14 12:00:29,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:29,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:29,209 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 12:00:29,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:00:29,209 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 12:00:29,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1690798079, now seen corresponding path program 3 times [2024-06-14 12:00:29,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:29,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2623747] [2024-06-14 12:00:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:29,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:30,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:30,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2623747] [2024-06-14 12:00:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2623747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:30,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:30,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:30,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837591592] [2024-06-14 12:00:30,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:30,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:30,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:30,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:30,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:30,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:30,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 167 transitions, 1639 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:30,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:30,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:30,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:30,387 INFO L124 PetriNetUnfolderBase]: 337/648 cut-off events. [2024-06-14 12:00:30,387 INFO L125 PetriNetUnfolderBase]: For 20930/20930 co-relation queries the response was YES. [2024-06-14 12:00:30,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 648 events. 337/648 cut-off events. For 20930/20930 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3186 event pairs, 57 based on Foata normal form. 2/650 useless extension candidates. Maximal degree in co-relation 3929. Up to 558 conditions per place. [2024-06-14 12:00:30,392 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 157 selfloop transitions, 23 changer transitions 0/183 dead transitions. [2024-06-14 12:00:30,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 183 transitions, 2053 flow [2024-06-14 12:00:30,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:00:30,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 12:00:30,394 INFO L175 Difference]: Start difference. First operand has 180 places, 167 transitions, 1639 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:00:30,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 183 transitions, 2053 flow [2024-06-14 12:00:30,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 183 transitions, 1999 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:30,441 INFO L231 Difference]: Finished difference. Result has 182 places, 168 transitions, 1653 flow [2024-06-14 12:00:30,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1653, PETRI_PLACES=182, PETRI_TRANSITIONS=168} [2024-06-14 12:00:30,442 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-14 12:00:30,442 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 168 transitions, 1653 flow [2024-06-14 12:00:30,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:30,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:30,442 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 12:00:30,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:00:30,442 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 12:00:30,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash 935085345, now seen corresponding path program 4 times [2024-06-14 12:00:30,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:30,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907495611] [2024-06-14 12:00:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:30,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:31,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907495611] [2024-06-14 12:00:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907495611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:31,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:31,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:31,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185340485] [2024-06-14 12:00:31,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:31,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:31,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:31,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 168 transitions, 1653 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:31,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:31,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:31,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:31,643 INFO L124 PetriNetUnfolderBase]: 350/675 cut-off events. [2024-06-14 12:00:31,644 INFO L125 PetriNetUnfolderBase]: For 21850/21850 co-relation queries the response was YES. [2024-06-14 12:00:31,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 675 events. 350/675 cut-off events. For 21850/21850 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3383 event pairs, 31 based on Foata normal form. 2/677 useless extension candidates. Maximal degree in co-relation 4043. Up to 543 conditions per place. [2024-06-14 12:00:31,649 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 163 selfloop transitions, 23 changer transitions 0/189 dead transitions. [2024-06-14 12:00:31,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 189 transitions, 2099 flow [2024-06-14 12:00:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:00:31,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:00:31,652 INFO L175 Difference]: Start difference. First operand has 182 places, 168 transitions, 1653 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:00:31,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 189 transitions, 2099 flow [2024-06-14 12:00:31,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 189 transitions, 2041 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:31,704 INFO L231 Difference]: Finished difference. Result has 185 places, 171 transitions, 1681 flow [2024-06-14 12:00:31,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1681, PETRI_PLACES=185, PETRI_TRANSITIONS=171} [2024-06-14 12:00:31,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-14 12:00:31,705 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 171 transitions, 1681 flow [2024-06-14 12:00:31,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:31,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:31,706 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 12:00:31,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:00:31,706 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 12:00:31,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:31,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2137785535, now seen corresponding path program 5 times [2024-06-14 12:00:31,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:31,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899789126] [2024-06-14 12:00:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:31,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:32,686 INFO 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 12:00:32,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:32,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899789126] [2024-06-14 12:00:32,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899789126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:32,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:32,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:32,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899581524] [2024-06-14 12:00:32,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:32,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:32,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:32,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:32,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:32,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:32,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 171 transitions, 1681 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:32,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:32,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:32,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:33,056 INFO L124 PetriNetUnfolderBase]: 363/702 cut-off events. [2024-06-14 12:00:33,056 INFO L125 PetriNetUnfolderBase]: For 22877/22877 co-relation queries the response was YES. [2024-06-14 12:00:33,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4267 conditions, 702 events. 363/702 cut-off events. For 22877/22877 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3578 event pairs, 42 based on Foata normal form. 2/704 useless extension candidates. Maximal degree in co-relation 4180. Up to 598 conditions per place. [2024-06-14 12:00:33,062 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 168 selfloop transitions, 20 changer transitions 0/191 dead transitions. [2024-06-14 12:00:33,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 191 transitions, 2137 flow [2024-06-14 12:00:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:00:33,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-14 12:00:33,070 INFO L175 Difference]: Start difference. First operand has 185 places, 171 transitions, 1681 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:00:33,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 191 transitions, 2137 flow [2024-06-14 12:00:33,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 191 transitions, 2066 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:33,127 INFO L231 Difference]: Finished difference. Result has 190 places, 174 transitions, 1700 flow [2024-06-14 12:00:33,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1700, PETRI_PLACES=190, PETRI_TRANSITIONS=174} [2024-06-14 12:00:33,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-14 12:00:33,128 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 174 transitions, 1700 flow [2024-06-14 12:00:33,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:33,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:33,128 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 12:00:33,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:00:33,129 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 12:00:33,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2139659485, now seen corresponding path program 6 times [2024-06-14 12:00:33,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:33,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958619358] [2024-06-14 12:00:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:33,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:34,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958619358] [2024-06-14 12:00:34,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958619358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:34,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:34,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:34,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276435625] [2024-06-14 12:00:34,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:34,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:34,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:34,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:34,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 174 transitions, 1700 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:34,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:34,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:34,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:34,561 INFO L124 PetriNetUnfolderBase]: 367/710 cut-off events. [2024-06-14 12:00:34,562 INFO L125 PetriNetUnfolderBase]: For 23939/23939 co-relation queries the response was YES. [2024-06-14 12:00:34,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4313 conditions, 710 events. 367/710 cut-off events. For 23939/23939 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3634 event pairs, 44 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 4224. Up to 615 conditions per place. [2024-06-14 12:00:34,567 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 166 selfloop transitions, 21 changer transitions 0/190 dead transitions. [2024-06-14 12:00:34,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 190 transitions, 2134 flow [2024-06-14 12:00:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:00:34,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 12:00:34,569 INFO L175 Difference]: Start difference. First operand has 190 places, 174 transitions, 1700 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:00:34,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 190 transitions, 2134 flow [2024-06-14 12:00:34,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 190 transitions, 2076 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:00:34,631 INFO L231 Difference]: Finished difference. Result has 194 places, 175 transitions, 1712 flow [2024-06-14 12:00:34,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1712, PETRI_PLACES=194, PETRI_TRANSITIONS=175} [2024-06-14 12:00:34,632 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-14 12:00:34,632 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 175 transitions, 1712 flow [2024-06-14 12:00:34,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:34,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:34,633 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 12:00:34,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:00:34,633 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 12:00:34,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:34,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2068468131, now seen corresponding path program 7 times [2024-06-14 12:00:34,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:34,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171919002] [2024-06-14 12:00:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:34,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:35,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:35,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171919002] [2024-06-14 12:00:35,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171919002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:35,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:35,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:35,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228223099] [2024-06-14 12:00:35,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:35,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:35,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:35,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:35,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:35,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 175 transitions, 1712 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:35,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:35,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:35,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:36,112 INFO L124 PetriNetUnfolderBase]: 371/718 cut-off events. [2024-06-14 12:00:36,113 INFO L125 PetriNetUnfolderBase]: For 24996/24996 co-relation queries the response was YES. [2024-06-14 12:00:36,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4365 conditions, 718 events. 371/718 cut-off events. For 24996/24996 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3710 event pairs, 46 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 4275. Up to 628 conditions per place. [2024-06-14 12:00:36,119 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 165 selfloop transitions, 22 changer transitions 0/190 dead transitions. [2024-06-14 12:00:36,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 190 transitions, 2146 flow [2024-06-14 12:00:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:00:36,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 12:00:36,121 INFO L175 Difference]: Start difference. First operand has 194 places, 175 transitions, 1712 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:00:36,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 190 transitions, 2146 flow [2024-06-14 12:00:36,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 190 transitions, 2086 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:36,180 INFO L231 Difference]: Finished difference. Result has 196 places, 176 transitions, 1726 flow [2024-06-14 12:00:36,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1726, PETRI_PLACES=196, PETRI_TRANSITIONS=176} [2024-06-14 12:00:36,181 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-14 12:00:36,181 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 176 transitions, 1726 flow [2024-06-14 12:00:36,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:36,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:36,182 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 12:00:36,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:00:36,182 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 12:00:36,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash -291862919, now seen corresponding path program 8 times [2024-06-14 12:00:36,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:36,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248666648] [2024-06-14 12:00:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:36,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:37,356 INFO 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 12:00:37,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:37,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248666648] [2024-06-14 12:00:37,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248666648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:37,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:37,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:37,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499838492] [2024-06-14 12:00:37,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:37,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:37,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:37,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:37,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:37,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:37,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 176 transitions, 1726 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:37,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:37,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:37,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:37,776 INFO L124 PetriNetUnfolderBase]: 375/726 cut-off events. [2024-06-14 12:00:37,776 INFO L125 PetriNetUnfolderBase]: For 26092/26092 co-relation queries the response was YES. [2024-06-14 12:00:37,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 726 events. 375/726 cut-off events. For 26092/26092 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3780 event pairs, 74 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 4331. Up to 643 conditions per place. [2024-06-14 12:00:37,783 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 167 selfloop transitions, 20 changer transitions 0/190 dead transitions. [2024-06-14 12:00:37,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 190 transitions, 2158 flow [2024-06-14 12:00:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:00:37,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:00:37,784 INFO L175 Difference]: Start difference. First operand has 196 places, 176 transitions, 1726 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:00:37,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 190 transitions, 2158 flow [2024-06-14 12:00:37,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 190 transitions, 2094 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:37,846 INFO L231 Difference]: Finished difference. Result has 198 places, 177 transitions, 1734 flow [2024-06-14 12:00:37,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1734, PETRI_PLACES=198, PETRI_TRANSITIONS=177} [2024-06-14 12:00:37,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-14 12:00:37,847 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 177 transitions, 1734 flow [2024-06-14 12:00:37,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:37,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:37,848 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 12:00:37,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:00:37,848 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 12:00:37,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash -297225299, now seen corresponding path program 9 times [2024-06-14 12:00:37,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:37,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076659960] [2024-06-14 12:00:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:37,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076659960] [2024-06-14 12:00:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076659960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:38,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:38,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:38,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139259965] [2024-06-14 12:00:38,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:38,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:38,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:38,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:38,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:38,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:38,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 177 transitions, 1734 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:38,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:38,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:38,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:39,303 INFO L124 PetriNetUnfolderBase]: 379/734 cut-off events. [2024-06-14 12:00:39,303 INFO L125 PetriNetUnfolderBase]: For 27014/27014 co-relation queries the response was YES. [2024-06-14 12:00:39,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 734 events. 379/734 cut-off events. For 27014/27014 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3837 event pairs, 76 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 4382. Up to 657 conditions per place. [2024-06-14 12:00:39,312 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 171 selfloop transitions, 18 changer transitions 0/192 dead transitions. [2024-06-14 12:00:39,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 192 transitions, 2188 flow [2024-06-14 12:00:39,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:39,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:00:39,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:00:39,314 INFO L175 Difference]: Start difference. First operand has 198 places, 177 transitions, 1734 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:00:39,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 192 transitions, 2188 flow [2024-06-14 12:00:39,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 192 transitions, 2120 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:39,388 INFO L231 Difference]: Finished difference. Result has 201 places, 179 transitions, 1757 flow [2024-06-14 12:00:39,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1757, PETRI_PLACES=201, PETRI_TRANSITIONS=179} [2024-06-14 12:00:39,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-14 12:00:39,389 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 179 transitions, 1757 flow [2024-06-14 12:00:39,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:39,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:39,389 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 12:00:39,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:00:39,389 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 12:00:39,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:39,390 INFO L85 PathProgramCache]: Analyzing trace with hash -297373169, now seen corresponding path program 10 times [2024-06-14 12:00:39,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:39,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366930537] [2024-06-14 12:00:39,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:39,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:40,513 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 12:00:40,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:40,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366930537] [2024-06-14 12:00:40,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366930537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:40,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:40,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:40,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393548258] [2024-06-14 12:00:40,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:40,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:40,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:40,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:40,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:40,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:40,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 179 transitions, 1757 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:40,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:40,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:40,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:40,937 INFO L124 PetriNetUnfolderBase]: 383/742 cut-off events. [2024-06-14 12:00:40,937 INFO L125 PetriNetUnfolderBase]: For 28152/28152 co-relation queries the response was YES. [2024-06-14 12:00:40,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4528 conditions, 742 events. 383/742 cut-off events. For 28152/28152 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3880 event pairs, 76 based on Foata normal form. 2/744 useless extension candidates. Maximal degree in co-relation 4434. Up to 660 conditions per place. [2024-06-14 12:00:40,944 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 17 changer transitions 0/194 dead transitions. [2024-06-14 12:00:40,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 194 transitions, 2203 flow [2024-06-14 12:00:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:00:40,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:00:40,945 INFO L175 Difference]: Start difference. First operand has 201 places, 179 transitions, 1757 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:00:40,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 194 transitions, 2203 flow [2024-06-14 12:00:41,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 194 transitions, 2146 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:41,021 INFO L231 Difference]: Finished difference. Result has 204 places, 180 transitions, 1770 flow [2024-06-14 12:00:41,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1770, PETRI_PLACES=204, PETRI_TRANSITIONS=180} [2024-06-14 12:00:41,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-14 12:00:41,022 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 180 transitions, 1770 flow [2024-06-14 12:00:41,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:41,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:41,022 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 12:00:41,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:00:41,023 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 12:00:41,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash 835380139, now seen corresponding path program 1 times [2024-06-14 12:00:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:41,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083133741] [2024-06-14 12:00:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:41,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:43,187 INFO 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 12:00:43,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:43,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083133741] [2024-06-14 12:00:43,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083133741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:43,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:43,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:00:43,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84104699] [2024-06-14 12:00:43,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:43,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:00:43,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:43,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:00:43,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:00:43,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:43,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 180 transitions, 1770 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:43,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:43,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:43,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:43,804 INFO L124 PetriNetUnfolderBase]: 386/746 cut-off events. [2024-06-14 12:00:43,805 INFO L125 PetriNetUnfolderBase]: For 27754/27754 co-relation queries the response was YES. [2024-06-14 12:00:43,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4560 conditions, 746 events. 386/746 cut-off events. For 27754/27754 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3914 event pairs, 52 based on Foata normal form. 1/747 useless extension candidates. Maximal degree in co-relation 4465. Up to 621 conditions per place. [2024-06-14 12:00:43,813 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 41 changer transitions 0/196 dead transitions. [2024-06-14 12:00:43,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 196 transitions, 2238 flow [2024-06-14 12:00:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:00:43,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-14 12:00:43,814 INFO L175 Difference]: Start difference. First operand has 204 places, 180 transitions, 1770 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:00:43,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 196 transitions, 2238 flow [2024-06-14 12:00:43,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 196 transitions, 2178 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:43,896 INFO L231 Difference]: Finished difference. Result has 208 places, 183 transitions, 1867 flow [2024-06-14 12:00:43,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1867, PETRI_PLACES=208, PETRI_TRANSITIONS=183} [2024-06-14 12:00:43,897 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-14 12:00:43,897 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 183 transitions, 1867 flow [2024-06-14 12:00:43,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:43,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:43,898 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 12:00:43,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:00:43,898 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 12:00:43,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:43,899 INFO L85 PathProgramCache]: Analyzing trace with hash 835589668, now seen corresponding path program 1 times [2024-06-14 12:00:43,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:43,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520678105] [2024-06-14 12:00:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:43,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:44,797 INFO 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 12:00:44,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:44,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520678105] [2024-06-14 12:00:44,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520678105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:44,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:44,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:00:44,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708315547] [2024-06-14 12:00:44,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:44,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:00:44,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:44,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:00:44,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:00:44,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:44,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 183 transitions, 1867 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:44,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:44,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:44,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:45,153 INFO L124 PetriNetUnfolderBase]: 406/791 cut-off events. [2024-06-14 12:00:45,154 INFO L125 PetriNetUnfolderBase]: For 43078/43078 co-relation queries the response was YES. [2024-06-14 12:00:45,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4853 conditions, 791 events. 406/791 cut-off events. For 43078/43078 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4234 event pairs, 82 based on Foata normal form. 12/803 useless extension candidates. Maximal degree in co-relation 4756. Up to 657 conditions per place. [2024-06-14 12:00:45,160 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 170 selfloop transitions, 22 changer transitions 7/202 dead transitions. [2024-06-14 12:00:45,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 202 transitions, 2385 flow [2024-06-14 12:00:45,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:00:45,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-14 12:00:45,162 INFO L175 Difference]: Start difference. First operand has 208 places, 183 transitions, 1867 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:00:45,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 202 transitions, 2385 flow [2024-06-14 12:00:45,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 202 transitions, 2286 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:45,247 INFO L231 Difference]: Finished difference. Result has 211 places, 181 transitions, 1789 flow [2024-06-14 12:00:45,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1789, PETRI_PLACES=211, PETRI_TRANSITIONS=181} [2024-06-14 12:00:45,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-14 12:00:45,247 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 181 transitions, 1789 flow [2024-06-14 12:00:45,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:45,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:45,248 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 12:00:45,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:00:45,248 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 12:00:45,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:45,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1511128281, now seen corresponding path program 2 times [2024-06-14 12:00:45,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897508096] [2024-06-14 12:00:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:46,428 INFO 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 12:00:46,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:46,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897508096] [2024-06-14 12:00:46,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897508096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:46,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:46,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:00:46,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925248602] [2024-06-14 12:00:46,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:46,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:00:46,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:46,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:00:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:00:46,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:46,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 181 transitions, 1789 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:46,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:46,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:46,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:46,934 INFO L124 PetriNetUnfolderBase]: 380/740 cut-off events. [2024-06-14 12:00:46,935 INFO L125 PetriNetUnfolderBase]: For 27920/27920 co-relation queries the response was YES. [2024-06-14 12:00:46,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4444 conditions, 740 events. 380/740 cut-off events. For 27920/27920 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3924 event pairs, 78 based on Foata normal form. 1/741 useless extension candidates. Maximal degree in co-relation 4346. Up to 651 conditions per place. [2024-06-14 12:00:46,942 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 165 selfloop transitions, 26 changer transitions 0/194 dead transitions. [2024-06-14 12:00:46,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 194 transitions, 2203 flow [2024-06-14 12:00:46,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:00:46,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-14 12:00:46,943 INFO L175 Difference]: Start difference. First operand has 211 places, 181 transitions, 1789 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:00:46,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 194 transitions, 2203 flow [2024-06-14 12:00:47,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 194 transitions, 2117 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:47,019 INFO L231 Difference]: Finished difference. Result has 213 places, 181 transitions, 1760 flow [2024-06-14 12:00:47,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1760, PETRI_PLACES=213, PETRI_TRANSITIONS=181} [2024-06-14 12:00:47,020 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-14 12:00:47,020 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 181 transitions, 1760 flow [2024-06-14 12:00:47,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:47,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:47,020 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 12:00:47,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:00:47,021 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 12:00:47,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash -360479763, now seen corresponding path program 11 times [2024-06-14 12:00:47,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:47,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979657107] [2024-06-14 12:00:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:47,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:47,804 INFO 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 12:00:47,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:47,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979657107] [2024-06-14 12:00:47,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979657107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:47,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:47,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:47,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5180480] [2024-06-14 12:00:47,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:47,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:47,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:47,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:47,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:47,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 181 transitions, 1760 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:47,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:47,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:47,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:48,156 INFO L124 PetriNetUnfolderBase]: 384/748 cut-off events. [2024-06-14 12:00:48,156 INFO L125 PetriNetUnfolderBase]: For 30513/30513 co-relation queries the response was YES. [2024-06-14 12:00:48,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 748 events. 384/748 cut-off events. For 30513/30513 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3975 event pairs, 63 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 4395. Up to 619 conditions per place. [2024-06-14 12:00:48,163 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 164 selfloop transitions, 29 changer transitions 0/196 dead transitions. [2024-06-14 12:00:48,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 196 transitions, 2212 flow [2024-06-14 12:00:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:00:48,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-14 12:00:48,165 INFO L175 Difference]: Start difference. First operand has 213 places, 181 transitions, 1760 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:00:48,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 196 transitions, 2212 flow [2024-06-14 12:00:48,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 196 transitions, 2137 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:00:48,239 INFO L231 Difference]: Finished difference. Result has 212 places, 182 transitions, 1785 flow [2024-06-14 12:00:48,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1785, PETRI_PLACES=212, PETRI_TRANSITIONS=182} [2024-06-14 12:00:48,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-14 12:00:48,240 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 182 transitions, 1785 flow [2024-06-14 12:00:48,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:48,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:48,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:48,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:00:48,241 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 12:00:48,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:48,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1133253409, now seen corresponding path program 12 times [2024-06-14 12:00:48,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:48,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341963686] [2024-06-14 12:00:48,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:48,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:49,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:49,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341963686] [2024-06-14 12:00:49,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341963686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:49,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:49,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:49,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457293307] [2024-06-14 12:00:49,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:49,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:49,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:49,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:49,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:49,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:49,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 182 transitions, 1785 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:49,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:49,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:49,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:49,837 INFO L124 PetriNetUnfolderBase]: 388/756 cut-off events. [2024-06-14 12:00:49,837 INFO L125 PetriNetUnfolderBase]: For 32074/32074 co-relation queries the response was YES. [2024-06-14 12:00:49,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4614 conditions, 756 events. 388/756 cut-off events. For 32074/32074 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4032 event pairs, 71 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 4514. Up to 642 conditions per place. [2024-06-14 12:00:49,844 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 161 selfloop transitions, 32 changer transitions 0/196 dead transitions. [2024-06-14 12:00:49,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 196 transitions, 2237 flow [2024-06-14 12:00:49,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:00:49,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-14 12:00:49,846 INFO L175 Difference]: Start difference. First operand has 212 places, 182 transitions, 1785 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:00:49,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 196 transitions, 2237 flow [2024-06-14 12:00:49,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 196 transitions, 2147 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:49,919 INFO L231 Difference]: Finished difference. Result has 214 places, 183 transitions, 1803 flow [2024-06-14 12:00:49,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1803, PETRI_PLACES=214, PETRI_TRANSITIONS=183} [2024-06-14 12:00:49,919 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-14 12:00:49,919 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 183 transitions, 1803 flow [2024-06-14 12:00:49,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:49,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:49,920 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 12:00:49,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:00:49,920 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 12:00:49,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:49,920 INFO L85 PathProgramCache]: Analyzing trace with hash -362353713, now seen corresponding path program 13 times [2024-06-14 12:00:49,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:49,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443598955] [2024-06-14 12:00:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:49,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:50,791 INFO 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 12:00:50,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443598955] [2024-06-14 12:00:50,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443598955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:50,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:50,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:50,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794560890] [2024-06-14 12:00:50,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:50,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:50,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:50,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:50,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:50,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:50,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 183 transitions, 1803 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:50,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:50,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:50,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:51,153 INFO L124 PetriNetUnfolderBase]: 392/764 cut-off events. [2024-06-14 12:00:51,153 INFO L125 PetriNetUnfolderBase]: For 30924/30924 co-relation queries the response was YES. [2024-06-14 12:00:51,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 764 events. 392/764 cut-off events. For 30924/30924 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4078 event pairs, 37 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 4531. Up to 577 conditions per place. [2024-06-14 12:00:51,159 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 167 selfloop transitions, 29 changer transitions 0/199 dead transitions. [2024-06-14 12:00:51,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 199 transitions, 2263 flow [2024-06-14 12:00:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:00:51,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 12:00:51,161 INFO L175 Difference]: Start difference. First operand has 214 places, 183 transitions, 1803 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:00:51,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 199 transitions, 2263 flow [2024-06-14 12:00:51,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 199 transitions, 2169 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:51,235 INFO L231 Difference]: Finished difference. Result has 216 places, 184 transitions, 1811 flow [2024-06-14 12:00:51,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1811, PETRI_PLACES=216, PETRI_TRANSITIONS=184} [2024-06-14 12:00:51,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-14 12:00:51,236 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 184 transitions, 1811 flow [2024-06-14 12:00:51,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:51,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:51,237 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 12:00:51,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:00:51,237 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 12:00:51,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:51,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1552904877, now seen corresponding path program 14 times [2024-06-14 12:00:51,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:51,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233996937] [2024-06-14 12:00:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:51,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:52,183 INFO 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 12:00:52,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:52,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233996937] [2024-06-14 12:00:52,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233996937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:52,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:52,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:52,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883023268] [2024-06-14 12:00:52,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:52,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:52,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:52,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:52,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:52,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:52,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 184 transitions, 1811 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:52,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:52,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:52,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:52,579 INFO L124 PetriNetUnfolderBase]: 396/772 cut-off events. [2024-06-14 12:00:52,579 INFO L125 PetriNetUnfolderBase]: For 29690/29690 co-relation queries the response was YES. [2024-06-14 12:00:52,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4660 conditions, 772 events. 396/772 cut-off events. For 29690/29690 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4145 event pairs, 82 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 4558. Up to 680 conditions per place. [2024-06-14 12:00:52,585 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 171 selfloop transitions, 23 changer transitions 0/197 dead transitions. [2024-06-14 12:00:52,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 197 transitions, 2265 flow [2024-06-14 12:00:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 12:00:52,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-14 12:00:52,587 INFO L175 Difference]: Start difference. First operand has 216 places, 184 transitions, 1811 flow. Second operand 9 states and 107 transitions. [2024-06-14 12:00:52,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 197 transitions, 2265 flow [2024-06-14 12:00:52,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 197 transitions, 2177 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:52,668 INFO L231 Difference]: Finished difference. Result has 219 places, 186 transitions, 1824 flow [2024-06-14 12:00:52,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1824, PETRI_PLACES=219, PETRI_TRANSITIONS=186} [2024-06-14 12:00:52,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-14 12:00:52,669 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 186 transitions, 1824 flow [2024-06-14 12:00:52,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:52,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:52,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:52,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:00:52,670 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 12:00:52,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:52,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1552757007, now seen corresponding path program 15 times [2024-06-14 12:00:52,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:52,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775892667] [2024-06-14 12:00:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:52,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:53,639 INFO 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 12:00:53,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:53,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775892667] [2024-06-14 12:00:53,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775892667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:53,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:53,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:53,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520035953] [2024-06-14 12:00:53,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:53,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:53,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:53,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:53,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:53,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:53,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 186 transitions, 1824 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:53,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:53,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:53,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:53,953 INFO L124 PetriNetUnfolderBase]: 400/780 cut-off events. [2024-06-14 12:00:53,953 INFO L125 PetriNetUnfolderBase]: For 27525/27525 co-relation queries the response was YES. [2024-06-14 12:00:53,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4625 conditions, 780 events. 400/780 cut-off events. For 27525/27525 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4196 event pairs, 78 based on Foata normal form. 2/782 useless extension candidates. Maximal degree in co-relation 4521. Up to 678 conditions per place. [2024-06-14 12:00:53,959 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 174 selfloop transitions, 22 changer transitions 0/199 dead transitions. [2024-06-14 12:00:53,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 199 transitions, 2270 flow [2024-06-14 12:00:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:53,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 12:00:53,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-14 12:00:53,961 INFO L175 Difference]: Start difference. First operand has 219 places, 186 transitions, 1824 flow. Second operand 9 states and 107 transitions. [2024-06-14 12:00:53,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 199 transitions, 2270 flow [2024-06-14 12:00:54,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 199 transitions, 2207 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 12:00:54,037 INFO L231 Difference]: Finished difference. Result has 222 places, 187 transitions, 1839 flow [2024-06-14 12:00:54,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1839, PETRI_PLACES=222, PETRI_TRANSITIONS=187} [2024-06-14 12:00:54,038 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-14 12:00:54,038 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 187 transitions, 1839 flow [2024-06-14 12:00:54,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:54,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:54,038 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 12:00:54,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:00:54,039 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 12:00:54,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:54,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1558267257, now seen corresponding path program 16 times [2024-06-14 12:00:54,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:54,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248909197] [2024-06-14 12:00:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:54,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:55,061 INFO 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 12:00:55,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:55,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248909197] [2024-06-14 12:00:55,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248909197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:55,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:55,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:55,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445359113] [2024-06-14 12:00:55,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:55,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:55,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:55,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:55,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:55,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:55,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 187 transitions, 1839 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:55,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:55,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:55,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:55,393 INFO L124 PetriNetUnfolderBase]: 404/788 cut-off events. [2024-06-14 12:00:55,394 INFO L125 PetriNetUnfolderBase]: For 27600/27600 co-relation queries the response was YES. [2024-06-14 12:00:55,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4664 conditions, 788 events. 404/788 cut-off events. For 27600/27600 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4259 event pairs, 82 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 4559. Up to 684 conditions per place. [2024-06-14 12:00:55,400 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 167 selfloop transitions, 29 changer transitions 0/199 dead transitions. [2024-06-14 12:00:55,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 199 transitions, 2283 flow [2024-06-14 12:00:55,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:00:55,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 12:00:55,401 INFO L175 Difference]: Start difference. First operand has 222 places, 187 transitions, 1839 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:00:55,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 199 transitions, 2283 flow [2024-06-14 12:00:55,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 199 transitions, 2217 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:55,480 INFO L231 Difference]: Finished difference. Result has 224 places, 188 transitions, 1865 flow [2024-06-14 12:00:55,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1865, PETRI_PLACES=224, PETRI_TRANSITIONS=188} [2024-06-14 12:00:55,480 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-14 12:00:55,480 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 188 transitions, 1865 flow [2024-06-14 12:00:55,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:55,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:55,481 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 12:00:55,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:00:55,481 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 12:00:55,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:55,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2021115441, now seen corresponding path program 3 times [2024-06-14 12:00:55,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:55,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608842504] [2024-06-14 12:00:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:55,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:56,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:56,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608842504] [2024-06-14 12:00:56,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608842504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:56,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:56,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:00:56,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569416237] [2024-06-14 12:00:56,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:56,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:00:56,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:56,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:00:56,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:00:56,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:56,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 188 transitions, 1865 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:56,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:56,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:56,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:57,197 INFO L124 PetriNetUnfolderBase]: 407/795 cut-off events. [2024-06-14 12:00:57,197 INFO L125 PetriNetUnfolderBase]: For 26488/26488 co-relation queries the response was YES. [2024-06-14 12:00:57,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 795 events. 407/795 cut-off events. For 26488/26488 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4310 event pairs, 72 based on Foata normal form. 1/796 useless extension candidates. Maximal degree in co-relation 4601. Up to 679 conditions per place. [2024-06-14 12:00:57,203 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 40 changer transitions 0/203 dead transitions. [2024-06-14 12:00:57,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 203 transitions, 2349 flow [2024-06-14 12:00:57,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:00:57,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:00:57,204 INFO L175 Difference]: Start difference. First operand has 224 places, 188 transitions, 1865 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:00:57,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 203 transitions, 2349 flow [2024-06-14 12:00:57,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 203 transitions, 2271 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:57,284 INFO L231 Difference]: Finished difference. Result has 227 places, 190 transitions, 1933 flow [2024-06-14 12:00:57,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1933, PETRI_PLACES=227, PETRI_TRANSITIONS=190} [2024-06-14 12:00:57,285 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-14 12:00:57,285 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 190 transitions, 1933 flow [2024-06-14 12:00:57,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:57,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:57,285 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 12:00:57,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:00:57,286 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 12:00:57,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1558273209, now seen corresponding path program 4 times [2024-06-14 12:00:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:57,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477898398] [2024-06-14 12:00:57,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:57,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:58,490 INFO 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 12:00:58,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:58,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477898398] [2024-06-14 12:00:58,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477898398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:58,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:58,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:58,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422634883] [2024-06-14 12:00:58,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:58,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:58,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:58,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:58,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:58,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 190 transitions, 1933 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:58,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:58,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:58,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:58,947 INFO L124 PetriNetUnfolderBase]: 410/800 cut-off events. [2024-06-14 12:00:58,947 INFO L125 PetriNetUnfolderBase]: For 26430/26430 co-relation queries the response was YES. [2024-06-14 12:00:58,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4775 conditions, 800 events. 410/800 cut-off events. For 26430/26430 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4333 event pairs, 82 based on Foata normal form. 1/801 useless extension candidates. Maximal degree in co-relation 4668. Up to 657 conditions per place. [2024-06-14 12:00:58,954 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 152 selfloop transitions, 48 changer transitions 0/203 dead transitions. [2024-06-14 12:00:58,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 203 transitions, 2511 flow [2024-06-14 12:00:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:00:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:00:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:00:58,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-14 12:00:58,956 INFO L175 Difference]: Start difference. First operand has 227 places, 190 transitions, 1933 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:00:58,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 203 transitions, 2511 flow [2024-06-14 12:00:59,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 203 transitions, 2395 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:59,042 INFO L231 Difference]: Finished difference. Result has 228 places, 192 transitions, 1973 flow [2024-06-14 12:00:59,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1973, PETRI_PLACES=228, PETRI_TRANSITIONS=192} [2024-06-14 12:00:59,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-14 12:00:59,043 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 192 transitions, 1973 flow [2024-06-14 12:00:59,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:59,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:59,044 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 12:00:59,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:00:59,044 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 12:00:59,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash -989003248, now seen corresponding path program 2 times [2024-06-14 12:00:59,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:59,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758906064] [2024-06-14 12:00:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:59,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:59,890 INFO 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 12:00:59,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:59,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758906064] [2024-06-14 12:00:59,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758906064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:59,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:59,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:00:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084497556] [2024-06-14 12:00:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:59,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:00:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:00:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:00:59,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:00:59,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 192 transitions, 1973 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:59,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:59,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:00:59,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:00,433 INFO L124 PetriNetUnfolderBase]: 430/844 cut-off events. [2024-06-14 12:01:00,434 INFO L125 PetriNetUnfolderBase]: For 41892/41892 co-relation queries the response was YES. [2024-06-14 12:01:00,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5034 conditions, 844 events. 430/844 cut-off events. For 41892/41892 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4640 event pairs, 86 based on Foata normal form. 12/856 useless extension candidates. Maximal degree in co-relation 4926. Up to 684 conditions per place. [2024-06-14 12:01:00,440 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 168 selfloop transitions, 30 changer transitions 7/208 dead transitions. [2024-06-14 12:01:00,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 208 transitions, 2501 flow [2024-06-14 12:01:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:01:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:01:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:01:00,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-14 12:01:00,457 INFO L175 Difference]: Start difference. First operand has 228 places, 192 transitions, 1973 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:01:00,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 208 transitions, 2501 flow [2024-06-14 12:01:00,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 208 transitions, 2390 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 12:01:00,582 INFO L231 Difference]: Finished difference. Result has 230 places, 190 transitions, 1915 flow [2024-06-14 12:01:00,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1915, PETRI_PLACES=230, PETRI_TRANSITIONS=190} [2024-06-14 12:01:00,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-14 12:01:00,583 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 190 transitions, 1915 flow [2024-06-14 12:01:00,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:00,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:00,584 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 12:01:00,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:01:00,584 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 12:01:00,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash -989010967, now seen corresponding path program 5 times [2024-06-14 12:01:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161318519] [2024-06-14 12:01:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:02,120 INFO 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 12:01:02,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:02,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161318519] [2024-06-14 12:01:02,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161318519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:02,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:02,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266746923] [2024-06-14 12:01:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:02,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:02,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:02,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:02,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:02,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 190 transitions, 1915 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:02,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:02,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:02,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:02,605 INFO L124 PetriNetUnfolderBase]: 404/793 cut-off events. [2024-06-14 12:01:02,605 INFO L125 PetriNetUnfolderBase]: For 25714/25714 co-relation queries the response was YES. [2024-06-14 12:01:02,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4625 conditions, 793 events. 404/793 cut-off events. For 25714/25714 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4328 event pairs, 82 based on Foata normal form. 1/794 useless extension candidates. Maximal degree in co-relation 4517. Up to 675 conditions per place. [2024-06-14 12:01:02,611 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 40 changer transitions 0/201 dead transitions. [2024-06-14 12:01:02,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 201 transitions, 2337 flow [2024-06-14 12:01:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:01:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:01:02,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:01:02,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:01:02,613 INFO L175 Difference]: Start difference. First operand has 230 places, 190 transitions, 1915 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:01:02,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 201 transitions, 2337 flow [2024-06-14 12:01:02,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 201 transitions, 2231 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-14 12:01:02,698 INFO L231 Difference]: Finished difference. Result has 233 places, 190 transitions, 1897 flow [2024-06-14 12:01:02,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1897, PETRI_PLACES=233, PETRI_TRANSITIONS=190} [2024-06-14 12:01:02,698 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-14 12:01:02,698 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 190 transitions, 1897 flow [2024-06-14 12:01:02,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:02,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:02,699 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 12:01:02,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:01:02,699 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 12:01:02,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:02,700 INFO L85 PathProgramCache]: Analyzing trace with hash 191055161, now seen corresponding path program 17 times [2024-06-14 12:01:02,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:02,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501119] [2024-06-14 12:01:02,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:02,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:03,854 INFO 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 12:01:03,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501119] [2024-06-14 12:01:03,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:03,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:03,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:01:03,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110138798] [2024-06-14 12:01:03,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:03,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:01:03,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:01:03,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:01:03,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:03,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 190 transitions, 1897 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:03,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:03,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:03,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:04,114 INFO L124 PetriNetUnfolderBase]: 408/801 cut-off events. [2024-06-14 12:01:04,115 INFO L125 PetriNetUnfolderBase]: For 26973/26973 co-relation queries the response was YES. [2024-06-14 12:01:04,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4648 conditions, 801 events. 408/801 cut-off events. For 26973/26973 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4375 event pairs, 85 based on Foata normal form. 2/803 useless extension candidates. Maximal degree in co-relation 4539. Up to 674 conditions per place. [2024-06-14 12:01:04,122 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 160 selfloop transitions, 37 changer transitions 0/200 dead transitions. [2024-06-14 12:01:04,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 200 transitions, 2335 flow [2024-06-14 12:01:04,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:01:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:01:04,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:01:04,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 12:01:04,123 INFO L175 Difference]: Start difference. First operand has 233 places, 190 transitions, 1897 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:01:04,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 200 transitions, 2335 flow [2024-06-14 12:01:04,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 200 transitions, 2206 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:01:04,204 INFO L231 Difference]: Finished difference. Result has 231 places, 191 transitions, 1872 flow [2024-06-14 12:01:04,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1872, PETRI_PLACES=231, PETRI_TRANSITIONS=191} [2024-06-14 12:01:04,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-14 12:01:04,205 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 191 transitions, 1872 flow [2024-06-14 12:01:04,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:04,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:04,205 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 12:01:04,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:01:04,206 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 12:01:04,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:04,207 INFO L85 PathProgramCache]: Analyzing trace with hash 107628093, now seen corresponding path program 18 times [2024-06-14 12:01:04,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:04,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434531473] [2024-06-14 12:01:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:04,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:05,266 INFO 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 12:01:05,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:05,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434531473] [2024-06-14 12:01:05,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434531473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:05,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:05,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:01:05,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143590961] [2024-06-14 12:01:05,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:05,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:01:05,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:05,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:01:05,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:01:05,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:05,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 191 transitions, 1872 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:05,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:05,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:05,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:05,580 INFO L124 PetriNetUnfolderBase]: 412/807 cut-off events. [2024-06-14 12:01:05,580 INFO L125 PetriNetUnfolderBase]: For 27078/27078 co-relation queries the response was YES. [2024-06-14 12:01:05,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 807 events. 412/807 cut-off events. For 27078/27078 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4404 event pairs, 87 based on Foata normal form. 2/809 useless extension candidates. Maximal degree in co-relation 4578. Up to 715 conditions per place. [2024-06-14 12:01:05,586 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 176 selfloop transitions, 23 changer transitions 0/202 dead transitions. [2024-06-14 12:01:05,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 202 transitions, 2326 flow [2024-06-14 12:01:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:01:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:01:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 12:01:05,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-14 12:01:05,587 INFO L175 Difference]: Start difference. First operand has 231 places, 191 transitions, 1872 flow. Second operand 9 states and 107 transitions. [2024-06-14 12:01:05,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 202 transitions, 2326 flow [2024-06-14 12:01:05,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 202 transitions, 2230 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:01:05,664 INFO L231 Difference]: Finished difference. Result has 234 places, 193 transitions, 1869 flow [2024-06-14 12:01:05,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1869, PETRI_PLACES=234, PETRI_TRANSITIONS=193} [2024-06-14 12:01:05,665 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-14 12:01:05,665 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 193 transitions, 1869 flow [2024-06-14 12:01:05,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:05,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:05,666 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 12:01:05,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:01:05,666 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 12:01:05,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash 107480223, now seen corresponding path program 19 times [2024-06-14 12:01:05,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:05,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249527096] [2024-06-14 12:01:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:05,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:06,700 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 12:01:06,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:06,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249527096] [2024-06-14 12:01:06,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249527096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:06,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:06,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:01:06,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233980059] [2024-06-14 12:01:06,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:06,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:01:06,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:01:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:01:06,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:06,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 193 transitions, 1869 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:06,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:06,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:06,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:07,115 INFO L124 PetriNetUnfolderBase]: 416/817 cut-off events. [2024-06-14 12:01:07,116 INFO L125 PetriNetUnfolderBase]: For 28140/28140 co-relation queries the response was YES. [2024-06-14 12:01:07,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4719 conditions, 817 events. 416/817 cut-off events. For 28140/28140 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4495 event pairs, 85 based on Foata normal form. 2/819 useless extension candidates. Maximal degree in co-relation 4608. Up to 718 conditions per place. [2024-06-14 12:01:07,122 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 179 selfloop transitions, 22 changer transitions 0/204 dead transitions. [2024-06-14 12:01:07,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 204 transitions, 2321 flow [2024-06-14 12:01:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:01:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:01:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 12:01:07,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-14 12:01:07,124 INFO L175 Difference]: Start difference. First operand has 234 places, 193 transitions, 1869 flow. Second operand 9 states and 107 transitions. [2024-06-14 12:01:07,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 204 transitions, 2321 flow [2024-06-14 12:01:07,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 204 transitions, 2256 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:01:07,211 INFO L231 Difference]: Finished difference. Result has 237 places, 194 transitions, 1882 flow [2024-06-14 12:01:07,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1882, PETRI_PLACES=237, PETRI_TRANSITIONS=194} [2024-06-14 12:01:07,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-14 12:01:07,212 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 194 transitions, 1882 flow [2024-06-14 12:01:07,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:07,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:07,212 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 12:01:07,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:01:07,213 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 12:01:07,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1716054103, now seen corresponding path program 20 times [2024-06-14 12:01:07,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:07,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224967008] [2024-06-14 12:01:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:07,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:08,376 INFO 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 12:01:08,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:08,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224967008] [2024-06-14 12:01:08,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224967008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:08,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:08,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:01:08,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818568902] [2024-06-14 12:01:08,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:08,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:01:08,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:01:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:01:08,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:08,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 194 transitions, 1882 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:08,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:08,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:08,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:08,714 INFO L124 PetriNetUnfolderBase]: 413/812 cut-off events. [2024-06-14 12:01:08,714 INFO L125 PetriNetUnfolderBase]: For 25990/25990 co-relation queries the response was YES. [2024-06-14 12:01:08,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4556 conditions, 812 events. 413/812 cut-off events. For 25990/25990 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4479 event pairs, 86 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 4444. Up to 712 conditions per place. [2024-06-14 12:01:08,721 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 174 selfloop transitions, 26 changer transitions 0/203 dead transitions. [2024-06-14 12:01:08,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 203 transitions, 2302 flow [2024-06-14 12:01:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:01:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:01:08,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:01:08,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 12:01:08,722 INFO L175 Difference]: Start difference. First operand has 237 places, 194 transitions, 1882 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:01:08,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 203 transitions, 2302 flow [2024-06-14 12:01:08,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 203 transitions, 2234 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 12:01:08,811 INFO L231 Difference]: Finished difference. Result has 239 places, 194 transitions, 1870 flow [2024-06-14 12:01:08,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1870, PETRI_PLACES=239, PETRI_TRANSITIONS=194} [2024-06-14 12:01:08,813 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-14 12:01:08,814 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 194 transitions, 1870 flow [2024-06-14 12:01:08,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:08,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:08,814 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 12:01:08,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:01:08,814 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 12:01:08,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:08,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2035359457, now seen corresponding path program 6 times [2024-06-14 12:01:08,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:08,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734814074] [2024-06-14 12:01:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:08,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:10,260 INFO 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 12:01:10,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:10,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734814074] [2024-06-14 12:01:10,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734814074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:10,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:10,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:10,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590283650] [2024-06-14 12:01:10,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:10,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:10,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:10,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:10,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:10,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:10,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 194 transitions, 1870 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:10,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:10,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:10,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:10,748 INFO L124 PetriNetUnfolderBase]: 416/817 cut-off events. [2024-06-14 12:01:10,748 INFO L125 PetriNetUnfolderBase]: For 25270/25270 co-relation queries the response was YES. [2024-06-14 12:01:10,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4583 conditions, 817 events. 416/817 cut-off events. For 25270/25270 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4504 event pairs, 86 based on Foata normal form. 1/818 useless extension candidates. Maximal degree in co-relation 4470. Up to 708 conditions per place. [2024-06-14 12:01:10,755 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 33 changer transitions 0/205 dead transitions. [2024-06-14 12:01:10,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 205 transitions, 2338 flow [2024-06-14 12:01:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:01:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:01:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:01:10,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:01:10,756 INFO L175 Difference]: Start difference. First operand has 239 places, 194 transitions, 1870 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:01:10,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 205 transitions, 2338 flow [2024-06-14 12:01:10,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 205 transitions, 2207 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:01:10,857 INFO L231 Difference]: Finished difference. Result has 241 places, 196 transitions, 1858 flow [2024-06-14 12:01:10,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1858, PETRI_PLACES=241, PETRI_TRANSITIONS=196} [2024-06-14 12:01:10,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-14 12:01:10,858 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 196 transitions, 1858 flow [2024-06-14 12:01:10,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:10,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:10,858 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 12:01:10,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:01:10,859 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 12:01:10,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:10,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2035351738, now seen corresponding path program 3 times [2024-06-14 12:01:10,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:10,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955541636] [2024-06-14 12:01:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:10,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:12,105 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 12:01:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:12,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955541636] [2024-06-14 12:01:12,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955541636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:12,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:12,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:12,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15654095] [2024-06-14 12:01:12,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:12,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:12,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:12,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:12,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:12,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:12,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 196 transitions, 1858 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:12,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:12,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:12,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:12,577 INFO L124 PetriNetUnfolderBase]: 432/851 cut-off events. [2024-06-14 12:01:12,577 INFO L125 PetriNetUnfolderBase]: For 39468/39468 co-relation queries the response was YES. [2024-06-14 12:01:12,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4714 conditions, 851 events. 432/851 cut-off events. For 39468/39468 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4700 event pairs, 90 based on Foata normal form. 10/861 useless extension candidates. Maximal degree in co-relation 4600. Up to 712 conditions per place. [2024-06-14 12:01:12,585 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 29 changer transitions 4/210 dead transitions. [2024-06-14 12:01:12,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 210 transitions, 2370 flow [2024-06-14 12:01:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:01:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:01:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:01:12,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:01:12,593 INFO L175 Difference]: Start difference. First operand has 241 places, 196 transitions, 1858 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:01:12,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 210 transitions, 2370 flow [2024-06-14 12:01:12,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 210 transitions, 2248 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 12:01:12,699 INFO L231 Difference]: Finished difference. Result has 243 places, 196 transitions, 1810 flow [2024-06-14 12:01:12,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1810, PETRI_PLACES=243, PETRI_TRANSITIONS=196} [2024-06-14 12:01:12,699 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-14 12:01:12,700 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 196 transitions, 1810 flow [2024-06-14 12:01:12,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:12,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:12,700 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 12:01:12,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:01:12,700 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 12:01:12,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:12,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1841621857, now seen corresponding path program 7 times [2024-06-14 12:01:12,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:12,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569324835] [2024-06-14 12:01:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:14,821 INFO 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 12:01:14,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:14,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569324835] [2024-06-14 12:01:14,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569324835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:14,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:14,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:14,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135595637] [2024-06-14 12:01:14,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:14,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:14,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:14,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:14,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:14,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:14,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 196 transitions, 1810 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:14,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:14,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:14,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:15,454 INFO L124 PetriNetUnfolderBase]: 429/846 cut-off events. [2024-06-14 12:01:15,455 INFO L125 PetriNetUnfolderBase]: For 27219/27219 co-relation queries the response was YES. [2024-06-14 12:01:15,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 846 events. 429/846 cut-off events. For 27219/27219 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4678 event pairs, 90 based on Foata normal form. 1/847 useless extension candidates. Maximal degree in co-relation 4531. Up to 676 conditions per place. [2024-06-14 12:01:15,462 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 146 selfloop transitions, 58 changer transitions 0/207 dead transitions. [2024-06-14 12:01:15,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 207 transitions, 2292 flow [2024-06-14 12:01:15,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:01:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:01:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:01:15,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-14 12:01:15,463 INFO L175 Difference]: Start difference. First operand has 243 places, 196 transitions, 1810 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:01:15,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 207 transitions, 2292 flow [2024-06-14 12:01:15,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 207 transitions, 2204 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:15,570 INFO L231 Difference]: Finished difference. Result has 243 places, 198 transitions, 1901 flow [2024-06-14 12:01:15,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1901, PETRI_PLACES=243, PETRI_TRANSITIONS=198} [2024-06-14 12:01:15,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-14 12:01:15,571 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 198 transitions, 1901 flow [2024-06-14 12:01:15,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:15,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:15,571 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 12:01:15,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:01:15,572 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 12:01:15,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:15,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1841420047, now seen corresponding path program 8 times [2024-06-14 12:01:15,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:15,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495180656] [2024-06-14 12:01:15,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:15,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:17,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:17,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:17,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495180656] [2024-06-14 12:01:17,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495180656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:17,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:17,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:17,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43371316] [2024-06-14 12:01:17,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:17,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:17,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:17,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:17,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:17,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:17,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 198 transitions, 1901 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:17,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:17,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:17,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:17,688 INFO L124 PetriNetUnfolderBase]: 432/853 cut-off events. [2024-06-14 12:01:17,689 INFO L125 PetriNetUnfolderBase]: For 28583/28583 co-relation queries the response was YES. [2024-06-14 12:01:17,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 853 events. 432/853 cut-off events. For 28583/28583 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4740 event pairs, 90 based on Foata normal form. 1/854 useless extension candidates. Maximal degree in co-relation 4655. Up to 681 conditions per place. [2024-06-14 12:01:17,695 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 149 selfloop transitions, 57 changer transitions 0/209 dead transitions. [2024-06-14 12:01:17,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 209 transitions, 2391 flow [2024-06-14 12:01:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:01:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:01:17,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:01:17,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-14 12:01:17,696 INFO L175 Difference]: Start difference. First operand has 243 places, 198 transitions, 1901 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:01:17,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 209 transitions, 2391 flow [2024-06-14 12:01:17,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 209 transitions, 2228 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 12:01:17,805 INFO L231 Difference]: Finished difference. Result has 245 places, 200 transitions, 1919 flow [2024-06-14 12:01:17,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1919, PETRI_PLACES=245, PETRI_TRANSITIONS=200} [2024-06-14 12:01:17,814 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-14 12:01:17,814 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 200 transitions, 1919 flow [2024-06-14 12:01:17,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:17,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:17,822 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 12:01:17,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:01:17,822 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 12:01:17,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2035561267, now seen corresponding path program 9 times [2024-06-14 12:01:17,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:17,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105859941] [2024-06-14 12:01:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:17,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:19,397 INFO 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 12:01:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:19,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105859941] [2024-06-14 12:01:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105859941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:19,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101542192] [2024-06-14 12:01:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:19,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:19,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:19,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:19,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 200 transitions, 1919 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:19,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:19,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:19,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:19,925 INFO L124 PetriNetUnfolderBase]: 430/850 cut-off events. [2024-06-14 12:01:19,925 INFO L125 PetriNetUnfolderBase]: For 27505/27505 co-relation queries the response was YES. [2024-06-14 12:01:19,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 850 events. 430/850 cut-off events. For 27505/27505 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4723 event pairs, 90 based on Foata normal form. 1/851 useless extension candidates. Maximal degree in co-relation 4558. Up to 741 conditions per place. [2024-06-14 12:01:19,933 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 32 changer transitions 0/209 dead transitions. [2024-06-14 12:01:19,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 209 transitions, 2351 flow [2024-06-14 12:01:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:01:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:01:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:01:19,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 12:01:19,934 INFO L175 Difference]: Start difference. First operand has 245 places, 200 transitions, 1919 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:01:19,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 209 transitions, 2351 flow [2024-06-14 12:01:20,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 209 transitions, 2156 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-14 12:01:20,048 INFO L231 Difference]: Finished difference. Result has 247 places, 200 transitions, 1793 flow [2024-06-14 12:01:20,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1793, PETRI_PLACES=247, PETRI_TRANSITIONS=200} [2024-06-14 12:01:20,049 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-14 12:01:20,049 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 200 transitions, 1793 flow [2024-06-14 12:01:20,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:20,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:20,049 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 12:01:20,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:01:20,050 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 12:01:20,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1841412328, now seen corresponding path program 4 times [2024-06-14 12:01:20,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:20,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241227227] [2024-06-14 12:01:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:20,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:21,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241227227] [2024-06-14 12:01:21,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241227227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:21,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:21,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:01:21,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673796066] [2024-06-14 12:01:21,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:21,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:01:21,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:21,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:01:21,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:01:21,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:21,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 200 transitions, 1793 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:21,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:21,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:21,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:21,377 INFO L124 PetriNetUnfolderBase]: 434/858 cut-off events. [2024-06-14 12:01:21,378 INFO L125 PetriNetUnfolderBase]: For 29564/29564 co-relation queries the response was YES. [2024-06-14 12:01:21,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4611 conditions, 858 events. 434/858 cut-off events. For 29564/29564 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4787 event pairs, 90 based on Foata normal form. 2/860 useless extension candidates. Maximal degree in co-relation 4495. Up to 698 conditions per place. [2024-06-14 12:01:21,386 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 49 changer transitions 0/210 dead transitions. [2024-06-14 12:01:21,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 210 transitions, 2247 flow [2024-06-14 12:01:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:01:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:01:21,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:01:21,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-14 12:01:21,387 INFO L175 Difference]: Start difference. First operand has 247 places, 200 transitions, 1793 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:01:21,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 210 transitions, 2247 flow [2024-06-14 12:01:21,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 210 transitions, 2163 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:21,500 INFO L231 Difference]: Finished difference. Result has 247 places, 201 transitions, 1833 flow [2024-06-14 12:01:21,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1833, PETRI_PLACES=247, PETRI_TRANSITIONS=201} [2024-06-14 12:01:21,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-14 12:01:21,501 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 201 transitions, 1833 flow [2024-06-14 12:01:21,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:21,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:21,501 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 12:01:21,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:01:21,509 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 12:01:21,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:21,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1841412607, now seen corresponding path program 10 times [2024-06-14 12:01:21,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:21,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793822904] [2024-06-14 12:01:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:21,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:22,972 INFO 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 12:01:22,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:22,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793822904] [2024-06-14 12:01:22,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793822904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:22,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:22,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:22,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980909162] [2024-06-14 12:01:22,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:22,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:22,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:22,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:23,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:23,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 201 transitions, 1833 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:23,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:23,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:23,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:23,395 INFO L124 PetriNetUnfolderBase]: 437/865 cut-off events. [2024-06-14 12:01:23,396 INFO L125 PetriNetUnfolderBase]: For 29066/29066 co-relation queries the response was YES. [2024-06-14 12:01:23,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4725 conditions, 865 events. 437/865 cut-off events. For 29066/29066 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4850 event pairs, 92 based on Foata normal form. 1/866 useless extension candidates. Maximal degree in co-relation 4608. Up to 626 conditions per place. [2024-06-14 12:01:23,403 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 76 changer transitions 0/214 dead transitions. [2024-06-14 12:01:23,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 214 transitions, 2521 flow [2024-06-14 12:01:23,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:01:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:01:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:01:23,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-14 12:01:23,404 INFO L175 Difference]: Start difference. First operand has 247 places, 201 transitions, 1833 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:01:23,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 214 transitions, 2521 flow [2024-06-14 12:01:23,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 214 transitions, 2407 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:01:23,511 INFO L231 Difference]: Finished difference. Result has 249 places, 205 transitions, 2007 flow [2024-06-14 12:01:23,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2007, PETRI_PLACES=249, PETRI_TRANSITIONS=205} [2024-06-14 12:01:23,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-14 12:01:23,514 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 205 transitions, 2007 flow [2024-06-14 12:01:23,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:23,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:23,515 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 12:01:23,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:01:23,515 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 12:01:23,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1145769278, now seen corresponding path program 5 times [2024-06-14 12:01:23,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:23,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245115454] [2024-06-14 12:01:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:23,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:24,767 INFO 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 12:01:24,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:24,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245115454] [2024-06-14 12:01:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245115454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:24,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:24,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805109151] [2024-06-14 12:01:24,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:24,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:24,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:24,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:24,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:24,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 205 transitions, 2007 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:24,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:24,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:24,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:25,257 INFO L124 PetriNetUnfolderBase]: 441/872 cut-off events. [2024-06-14 12:01:25,257 INFO L125 PetriNetUnfolderBase]: For 32270/32270 co-relation queries the response was YES. [2024-06-14 12:01:25,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 872 events. 441/872 cut-off events. For 32270/32270 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4889 event pairs, 129 based on Foata normal form. 2/874 useless extension candidates. Maximal degree in co-relation 4720. Up to 772 conditions per place. [2024-06-14 12:01:25,265 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 195 selfloop transitions, 21 changer transitions 0/219 dead transitions. [2024-06-14 12:01:25,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 219 transitions, 2613 flow [2024-06-14 12:01:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:01:25,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-14 12:01:25,272 INFO L175 Difference]: Start difference. First operand has 249 places, 205 transitions, 2007 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:01:25,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 219 transitions, 2613 flow [2024-06-14 12:01:25,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 219 transitions, 2370 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:25,389 INFO L231 Difference]: Finished difference. Result has 251 places, 206 transitions, 1834 flow [2024-06-14 12:01:25,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1834, PETRI_PLACES=251, PETRI_TRANSITIONS=206} [2024-06-14 12:01:25,390 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-14 12:01:25,390 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 206 transitions, 1834 flow [2024-06-14 12:01:25,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:25,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:25,390 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 12:01:25,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:01:25,390 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 12:01:25,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1404383678, now seen corresponding path program 6 times [2024-06-14 12:01:25,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:25,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144572569] [2024-06-14 12:01:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:25,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:26,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:26,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144572569] [2024-06-14 12:01:26,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144572569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:26,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:26,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:26,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15024322] [2024-06-14 12:01:26,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:26,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:26,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:26,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:26,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:26,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:26,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 206 transitions, 1834 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:26,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:26,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:26,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:27,096 INFO L124 PetriNetUnfolderBase]: 438/867 cut-off events. [2024-06-14 12:01:27,096 INFO L125 PetriNetUnfolderBase]: For 27020/27020 co-relation queries the response was YES. [2024-06-14 12:01:27,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4435 conditions, 867 events. 438/867 cut-off events. For 27020/27020 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4847 event pairs, 130 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 4319. Up to 784 conditions per place. [2024-06-14 12:01:27,104 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 194 selfloop transitions, 18 changer transitions 0/215 dead transitions. [2024-06-14 12:01:27,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 215 transitions, 2278 flow [2024-06-14 12:01:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:01:27,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:01:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 12:01:27,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-14 12:01:27,106 INFO L175 Difference]: Start difference. First operand has 251 places, 206 transitions, 1834 flow. Second operand 9 states and 106 transitions. [2024-06-14 12:01:27,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 215 transitions, 2278 flow [2024-06-14 12:01:27,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 215 transitions, 2188 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:27,204 INFO L231 Difference]: Finished difference. Result has 251 places, 206 transitions, 1785 flow [2024-06-14 12:01:27,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1785, PETRI_PLACES=251, PETRI_TRANSITIONS=206} [2024-06-14 12:01:27,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-14 12:01:27,205 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 206 transitions, 1785 flow [2024-06-14 12:01:27,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:27,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:27,206 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 12:01:27,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:01:27,206 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 12:01:27,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:27,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1155292757, now seen corresponding path program 11 times [2024-06-14 12:01:27,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:27,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491045254] [2024-06-14 12:01:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:27,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:28,651 INFO 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 12:01:28,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:28,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491045254] [2024-06-14 12:01:28,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491045254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:28,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:28,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:01:28,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152580496] [2024-06-14 12:01:28,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:28,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:01:28,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:28,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:01:28,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:01:28,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:28,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 206 transitions, 1785 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:28,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:28,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:28,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:29,070 INFO L124 PetriNetUnfolderBase]: 441/872 cut-off events. [2024-06-14 12:01:29,070 INFO L125 PetriNetUnfolderBase]: For 25715/25715 co-relation queries the response was YES. [2024-06-14 12:01:29,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4410 conditions, 872 events. 441/872 cut-off events. For 25715/25715 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4891 event pairs, 130 based on Foata normal form. 1/873 useless extension candidates. Maximal degree in co-relation 4294. Up to 785 conditions per place. [2024-06-14 12:01:29,076 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 23 changer transitions 0/217 dead transitions. [2024-06-14 12:01:29,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 217 transitions, 2413 flow [2024-06-14 12:01:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:01:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:01:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:01:29,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 12:01:29,077 INFO L175 Difference]: Start difference. First operand has 251 places, 206 transitions, 1785 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:01:29,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 217 transitions, 2413 flow [2024-06-14 12:01:29,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 217 transitions, 2373 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 12:01:29,180 INFO L231 Difference]: Finished difference. Result has 252 places, 208 transitions, 1854 flow [2024-06-14 12:01:29,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1854, PETRI_PLACES=252, PETRI_TRANSITIONS=208} [2024-06-14 12:01:29,181 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-14 12:01:29,181 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 208 transitions, 1854 flow [2024-06-14 12:01:29,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:29,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:29,181 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 12:01:29,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:01:29,181 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 12:01:29,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:29,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1155300197, now seen corresponding path program 12 times [2024-06-14 12:01:29,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:29,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667227867] [2024-06-14 12:01:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:29,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:30,682 INFO 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 12:01:30,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:30,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667227867] [2024-06-14 12:01:30,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667227867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:30,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:30,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906458345] [2024-06-14 12:01:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:30,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:30,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:30,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:30,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:30,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 208 transitions, 1854 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:30,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:30,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:30,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:31,192 INFO L124 PetriNetUnfolderBase]: 439/869 cut-off events. [2024-06-14 12:01:31,192 INFO L125 PetriNetUnfolderBase]: For 24376/24376 co-relation queries the response was YES. [2024-06-14 12:01:31,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 869 events. 439/869 cut-off events. For 24376/24376 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4884 event pairs, 130 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 4218. Up to 797 conditions per place. [2024-06-14 12:01:31,201 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 17 changer transitions 0/217 dead transitions. [2024-06-14 12:01:31,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 217 transitions, 2302 flow [2024-06-14 12:01:31,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:01:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:01:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 12:01:31,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-14 12:01:31,202 INFO L175 Difference]: Start difference. First operand has 252 places, 208 transitions, 1854 flow. Second operand 10 states and 114 transitions. [2024-06-14 12:01:31,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 217 transitions, 2302 flow [2024-06-14 12:01:31,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 217 transitions, 2169 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-14 12:01:31,295 INFO L231 Difference]: Finished difference. Result has 254 places, 208 transitions, 1760 flow [2024-06-14 12:01:31,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1760, PETRI_PLACES=254, PETRI_TRANSITIONS=208} [2024-06-14 12:01:31,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-14 12:01:31,296 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 208 transitions, 1760 flow [2024-06-14 12:01:31,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:31,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:31,296 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 12:01:31,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:01:31,297 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 12:01:31,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:31,297 INFO L85 PathProgramCache]: Analyzing trace with hash -870504120, now seen corresponding path program 1 times [2024-06-14 12:01:31,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:31,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986588574] [2024-06-14 12:01:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:31,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:32,277 INFO 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 12:01:32,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986588574] [2024-06-14 12:01:32,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986588574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:32,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:32,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:32,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721893944] [2024-06-14 12:01:32,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:32,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:32,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:32,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:32,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:32,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:32,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 208 transitions, 1760 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:32,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:32,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:32,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:32,749 INFO L124 PetriNetUnfolderBase]: 451/898 cut-off events. [2024-06-14 12:01:32,750 INFO L125 PetriNetUnfolderBase]: For 36979/36979 co-relation queries the response was YES. [2024-06-14 12:01:32,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4356 conditions, 898 events. 451/898 cut-off events. For 36979/36979 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5079 event pairs, 75 based on Foata normal form. 8/906 useless extension candidates. Maximal degree in co-relation 4239. Up to 758 conditions per place. [2024-06-14 12:01:32,759 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 195 selfloop transitions, 17 changer transitions 16/231 dead transitions. [2024-06-14 12:01:32,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 231 transitions, 2300 flow [2024-06-14 12:01:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:32,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:01:32,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-14 12:01:32,760 INFO L175 Difference]: Start difference. First operand has 254 places, 208 transitions, 1760 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:01:32,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 231 transitions, 2300 flow [2024-06-14 12:01:32,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 231 transitions, 2222 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:32,868 INFO L231 Difference]: Finished difference. Result has 255 places, 204 transitions, 1687 flow [2024-06-14 12:01:32,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1687, PETRI_PLACES=255, PETRI_TRANSITIONS=204} [2024-06-14 12:01:32,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-14 12:01:32,869 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 204 transitions, 1687 flow [2024-06-14 12:01:32,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:32,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:32,869 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 12:01:32,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:01:32,869 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 12:01:32,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1572356600, now seen corresponding path program 2 times [2024-06-14 12:01:32,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:32,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849064205] [2024-06-14 12:01:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:32,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:34,016 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 12:01:34,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:34,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849064205] [2024-06-14 12:01:34,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849064205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:34,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:34,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:34,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540622923] [2024-06-14 12:01:34,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:34,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:34,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:34,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:34,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:34,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:34,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 204 transitions, 1687 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:34,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:34,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:34,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:34,510 INFO L124 PetriNetUnfolderBase]: 427/848 cut-off events. [2024-06-14 12:01:34,511 INFO L125 PetriNetUnfolderBase]: For 27062/27062 co-relation queries the response was YES. [2024-06-14 12:01:34,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 848 events. 427/848 cut-off events. For 27062/27062 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4741 event pairs, 63 based on Foata normal form. 2/850 useless extension candidates. Maximal degree in co-relation 4000. Up to 741 conditions per place. [2024-06-14 12:01:34,519 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 22 changer transitions 0/223 dead transitions. [2024-06-14 12:01:34,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 223 transitions, 2187 flow [2024-06-14 12:01:34,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:01:34,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 12:01:34,521 INFO L175 Difference]: Start difference. First operand has 255 places, 204 transitions, 1687 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:01:34,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 223 transitions, 2187 flow [2024-06-14 12:01:34,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 223 transitions, 2145 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:34,623 INFO L231 Difference]: Finished difference. Result has 249 places, 205 transitions, 1711 flow [2024-06-14 12:01:34,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1711, PETRI_PLACES=249, PETRI_TRANSITIONS=205} [2024-06-14 12:01:34,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-14 12:01:34,624 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 205 transitions, 1711 flow [2024-06-14 12:01:34,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:34,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:34,624 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 12:01:34,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:01:34,625 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 12:01:34,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:34,625 INFO L85 PathProgramCache]: Analyzing trace with hash -875131880, now seen corresponding path program 3 times [2024-06-14 12:01:34,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:34,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023323529] [2024-06-14 12:01:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:34,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:35,818 INFO 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 12:01:35,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:35,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023323529] [2024-06-14 12:01:35,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023323529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:35,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:35,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:35,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740162216] [2024-06-14 12:01:35,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:35,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:35,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:35,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:35,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:35,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:35,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 205 transitions, 1711 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:35,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:35,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:35,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:36,310 INFO L124 PetriNetUnfolderBase]: 438/869 cut-off events. [2024-06-14 12:01:36,311 INFO L125 PetriNetUnfolderBase]: For 31462/31462 co-relation queries the response was YES. [2024-06-14 12:01:36,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4380 conditions, 869 events. 438/869 cut-off events. For 31462/31462 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4862 event pairs, 69 based on Foata normal form. 2/871 useless extension candidates. Maximal degree in co-relation 4266. Up to 755 conditions per place. [2024-06-14 12:01:36,319 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 25 changer transitions 0/226 dead transitions. [2024-06-14 12:01:36,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 226 transitions, 2375 flow [2024-06-14 12:01:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:36,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:36,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:01:36,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-14 12:01:36,321 INFO L175 Difference]: Start difference. First operand has 249 places, 205 transitions, 1711 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:01:36,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 226 transitions, 2375 flow [2024-06-14 12:01:36,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 226 transitions, 2319 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:36,447 INFO L231 Difference]: Finished difference. Result has 252 places, 208 transitions, 1761 flow [2024-06-14 12:01:36,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1761, PETRI_PLACES=252, PETRI_TRANSITIONS=208} [2024-06-14 12:01:36,447 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-14 12:01:36,448 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 208 transitions, 1761 flow [2024-06-14 12:01:36,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:36,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:36,448 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 12:01:36,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:01:36,448 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 12:01:36,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash -705747240, now seen corresponding path program 4 times [2024-06-14 12:01:36,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:36,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482233146] [2024-06-14 12:01:36,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:36,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:37,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:37,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482233146] [2024-06-14 12:01:37,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482233146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:37,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:37,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:37,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972180445] [2024-06-14 12:01:37,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:37,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:37,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:37,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:37,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 208 transitions, 1761 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:37,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:37,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:37,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:38,282 INFO L124 PetriNetUnfolderBase]: 435/864 cut-off events. [2024-06-14 12:01:38,282 INFO L125 PetriNetUnfolderBase]: For 28044/28044 co-relation queries the response was YES. [2024-06-14 12:01:38,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4236 conditions, 864 events. 435/864 cut-off events. For 28044/28044 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4845 event pairs, 76 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 4120. Up to 767 conditions per place. [2024-06-14 12:01:38,289 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 24 changer transitions 0/224 dead transitions. [2024-06-14 12:01:38,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 224 transitions, 2243 flow [2024-06-14 12:01:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:01:38,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 12:01:38,291 INFO L175 Difference]: Start difference. First operand has 252 places, 208 transitions, 1761 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:01:38,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 224 transitions, 2243 flow [2024-06-14 12:01:38,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 224 transitions, 2184 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 12:01:38,406 INFO L231 Difference]: Finished difference. Result has 257 places, 208 transitions, 1754 flow [2024-06-14 12:01:38,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1754, PETRI_PLACES=257, PETRI_TRANSITIONS=208} [2024-06-14 12:01:38,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-14 12:01:38,406 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 208 transitions, 1754 flow [2024-06-14 12:01:38,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:38,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:38,407 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 12:01:38,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:01:38,407 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 12:01:38,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:38,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1077124360, now seen corresponding path program 5 times [2024-06-14 12:01:38,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:38,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133239145] [2024-06-14 12:01:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:39,386 INFO 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 12:01:39,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:39,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133239145] [2024-06-14 12:01:39,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133239145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:39,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:39,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:39,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928159026] [2024-06-14 12:01:39,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:39,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:39,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:39,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:39,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:39,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:39,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 208 transitions, 1754 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:39,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:39,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:39,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:39,921 INFO L124 PetriNetUnfolderBase]: 447/892 cut-off events. [2024-06-14 12:01:39,921 INFO L125 PetriNetUnfolderBase]: For 40926/40926 co-relation queries the response was YES. [2024-06-14 12:01:39,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4342 conditions, 892 events. 447/892 cut-off events. For 40926/40926 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4998 event pairs, 59 based on Foata normal form. 8/900 useless extension candidates. Maximal degree in co-relation 4224. Up to 727 conditions per place. [2024-06-14 12:01:39,929 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 193 selfloop transitions, 17 changer transitions 18/231 dead transitions. [2024-06-14 12:01:39,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 231 transitions, 2296 flow [2024-06-14 12:01:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:01:39,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:01:39,930 INFO L175 Difference]: Start difference. First operand has 257 places, 208 transitions, 1754 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:01:39,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 231 transitions, 2296 flow [2024-06-14 12:01:40,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 231 transitions, 2245 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:40,075 INFO L231 Difference]: Finished difference. Result has 258 places, 203 transitions, 1706 flow [2024-06-14 12:01:40,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1706, PETRI_PLACES=258, PETRI_TRANSITIONS=203} [2024-06-14 12:01:40,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-14 12:01:40,075 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 203 transitions, 1706 flow [2024-06-14 12:01:40,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:40,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:40,076 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 12:01:40,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:01:40,076 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 12:01:40,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:40,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1567588056, now seen corresponding path program 1 times [2024-06-14 12:01:40,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:40,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771648671] [2024-06-14 12:01:40,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:40,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:41,491 INFO 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 12:01:41,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:41,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771648671] [2024-06-14 12:01:41,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771648671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:41,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:41,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:01:41,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024013962] [2024-06-14 12:01:41,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:41,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:01:41,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:41,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:01:41,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:01:41,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:41,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 203 transitions, 1706 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:41,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:41,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:41,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:41,982 INFO L124 PetriNetUnfolderBase]: 430/855 cut-off events. [2024-06-14 12:01:41,982 INFO L125 PetriNetUnfolderBase]: For 42111/42111 co-relation queries the response was YES. [2024-06-14 12:01:41,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4264 conditions, 855 events. 430/855 cut-off events. For 42111/42111 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4772 event pairs, 66 based on Foata normal form. 8/863 useless extension candidates. Maximal degree in co-relation 4145. Up to 731 conditions per place. [2024-06-14 12:01:41,990 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 189 selfloop transitions, 21 changer transitions 9/222 dead transitions. [2024-06-14 12:01:41,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 222 transitions, 2240 flow [2024-06-14 12:01:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 12:01:41,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-14 12:01:41,991 INFO L175 Difference]: Start difference. First operand has 258 places, 203 transitions, 1706 flow. Second operand 12 states and 140 transitions. [2024-06-14 12:01:41,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 222 transitions, 2240 flow [2024-06-14 12:01:42,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 222 transitions, 2196 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:42,122 INFO L231 Difference]: Finished difference. Result has 253 places, 200 transitions, 1683 flow [2024-06-14 12:01:42,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1683, PETRI_PLACES=253, PETRI_TRANSITIONS=200} [2024-06-14 12:01:42,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-14 12:01:42,123 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 200 transitions, 1683 flow [2024-06-14 12:01:42,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:42,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:42,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:42,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:01:42,123 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 12:01:42,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash -689829964, now seen corresponding path program 6 times [2024-06-14 12:01:42,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:42,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761926937] [2024-06-14 12:01:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:42,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:43,183 INFO 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 12:01:43,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:43,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761926937] [2024-06-14 12:01:43,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761926937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:43,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:43,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:43,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49357141] [2024-06-14 12:01:43,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:43,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:43,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:43,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:43,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:43,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 200 transitions, 1683 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:43,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:43,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:43,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:43,641 INFO L124 PetriNetUnfolderBase]: 417/828 cut-off events. [2024-06-14 12:01:43,641 INFO L125 PetriNetUnfolderBase]: For 29409/29409 co-relation queries the response was YES. [2024-06-14 12:01:43,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4120 conditions, 828 events. 417/828 cut-off events. For 29409/29409 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4589 event pairs, 64 based on Foata normal form. 2/830 useless extension candidates. Maximal degree in co-relation 4004. Up to 725 conditions per place. [2024-06-14 12:01:43,647 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 200 selfloop transitions, 17 changer transitions 0/220 dead transitions. [2024-06-14 12:01:43,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 220 transitions, 2185 flow [2024-06-14 12:01:43,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:01:43,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 12:01:43,648 INFO L175 Difference]: Start difference. First operand has 253 places, 200 transitions, 1683 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:01:43,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 220 transitions, 2185 flow [2024-06-14 12:01:43,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 220 transitions, 2135 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:01:43,765 INFO L231 Difference]: Finished difference. Result has 251 places, 201 transitions, 1693 flow [2024-06-14 12:01:43,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1693, PETRI_PLACES=251, PETRI_TRANSITIONS=201} [2024-06-14 12:01:43,765 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-14 12:01:43,765 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 201 transitions, 1693 flow [2024-06-14 12:01:43,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:43,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:43,766 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 12:01:43,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:01:43,766 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 12:01:43,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1904935612, now seen corresponding path program 7 times [2024-06-14 12:01:43,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:43,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502431181] [2024-06-14 12:01:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:43,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:44,777 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 12:01:44,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:44,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502431181] [2024-06-14 12:01:44,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502431181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:44,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:44,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:44,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253653955] [2024-06-14 12:01:44,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:44,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:44,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:44,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:44,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 201 transitions, 1693 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:44,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:44,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:44,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:45,204 INFO L124 PetriNetUnfolderBase]: 421/836 cut-off events. [2024-06-14 12:01:45,205 INFO L125 PetriNetUnfolderBase]: For 29593/29593 co-relation queries the response was YES. [2024-06-14 12:01:45,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4179 conditions, 836 events. 421/836 cut-off events. For 29593/29593 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4641 event pairs, 47 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 4063. Up to 731 conditions per place. [2024-06-14 12:01:45,211 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 20 changer transitions 0/218 dead transitions. [2024-06-14 12:01:45,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 218 transitions, 2185 flow [2024-06-14 12:01:45,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:01:45,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-14 12:01:45,212 INFO L175 Difference]: Start difference. First operand has 251 places, 201 transitions, 1693 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:01:45,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 218 transitions, 2185 flow [2024-06-14 12:01:45,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 218 transitions, 2135 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:45,325 INFO L231 Difference]: Finished difference. Result has 253 places, 202 transitions, 1711 flow [2024-06-14 12:01:45,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1711, PETRI_PLACES=253, PETRI_TRANSITIONS=202} [2024-06-14 12:01:45,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-14 12:01:45,326 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 202 transitions, 1711 flow [2024-06-14 12:01:45,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:45,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:45,326 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 12:01:45,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:01:45,327 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 12:01:45,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:45,327 INFO L85 PathProgramCache]: Analyzing trace with hash -571742284, now seen corresponding path program 8 times [2024-06-14 12:01:45,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:45,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922165992] [2024-06-14 12:01:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:45,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:46,286 INFO 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 12:01:46,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:46,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922165992] [2024-06-14 12:01:46,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922165992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:46,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:46,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:46,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917846674] [2024-06-14 12:01:46,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:46,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:46,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:46,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:46,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:46,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:46,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 202 transitions, 1711 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:46,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:46,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:46,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:46,746 INFO L124 PetriNetUnfolderBase]: 462/927 cut-off events. [2024-06-14 12:01:46,746 INFO L125 PetriNetUnfolderBase]: For 66389/66389 co-relation queries the response was YES. [2024-06-14 12:01:46,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5327 conditions, 927 events. 462/927 cut-off events. For 66389/66389 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5266 event pairs, 68 based on Foata normal form. 8/935 useless extension candidates. Maximal degree in co-relation 5210. Up to 728 conditions per place. [2024-06-14 12:01:46,753 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 20 changer transitions 7/225 dead transitions. [2024-06-14 12:01:46,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 225 transitions, 2455 flow [2024-06-14 12:01:46,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:01:46,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-14 12:01:46,754 INFO L175 Difference]: Start difference. First operand has 253 places, 202 transitions, 1711 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:01:46,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 225 transitions, 2455 flow [2024-06-14 12:01:46,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 225 transitions, 2397 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:46,926 INFO L231 Difference]: Finished difference. Result has 255 places, 200 transitions, 1678 flow [2024-06-14 12:01:46,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1678, PETRI_PLACES=255, PETRI_TRANSITIONS=200} [2024-06-14 12:01:46,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-14 12:01:46,927 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 200 transitions, 1678 flow [2024-06-14 12:01:46,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:46,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:46,928 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 12:01:46,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:01:46,928 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 12:01:46,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:46,928 INFO L85 PathProgramCache]: Analyzing trace with hash 302176026, now seen corresponding path program 9 times [2024-06-14 12:01:46,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:46,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837934856] [2024-06-14 12:01:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:46,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:47,905 INFO 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 12:01:47,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:47,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837934856] [2024-06-14 12:01:47,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837934856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:47,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:47,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:47,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349421957] [2024-06-14 12:01:47,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:47,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:47,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:47,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:47,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:48,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:48,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 200 transitions, 1678 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:48,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:48,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:48,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:48,349 INFO L124 PetriNetUnfolderBase]: 431/866 cut-off events. [2024-06-14 12:01:48,349 INFO L125 PetriNetUnfolderBase]: For 50436/50436 co-relation queries the response was YES. [2024-06-14 12:01:48,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 866 events. 431/866 cut-off events. For 50436/50436 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4874 event pairs, 57 based on Foata normal form. 10/876 useless extension candidates. Maximal degree in co-relation 4204. Up to 728 conditions per place. [2024-06-14 12:01:48,355 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 185 selfloop transitions, 16 changer transitions 14/218 dead transitions. [2024-06-14 12:01:48,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 218 transitions, 2224 flow [2024-06-14 12:01:48,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:01:48,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-14 12:01:48,356 INFO L175 Difference]: Start difference. First operand has 255 places, 200 transitions, 1678 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:01:48,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 218 transitions, 2224 flow [2024-06-14 12:01:48,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 218 transitions, 2183 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:48,480 INFO L231 Difference]: Finished difference. Result has 254 places, 194 transitions, 1621 flow [2024-06-14 12:01:48,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1621, PETRI_PLACES=254, PETRI_TRANSITIONS=194} [2024-06-14 12:01:48,481 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-14 12:01:48,481 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 194 transitions, 1621 flow [2024-06-14 12:01:48,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:48,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:48,481 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 12:01:48,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:01:48,482 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 12:01:48,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash -451381140, now seen corresponding path program 10 times [2024-06-14 12:01:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:48,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482406765] [2024-06-14 12:01:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:48,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:49,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:49,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482406765] [2024-06-14 12:01:49,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482406765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:49,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:49,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:49,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677370542] [2024-06-14 12:01:49,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:49,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:49,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:49,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:49,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:49,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:49,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 194 transitions, 1621 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:49,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:49,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:49,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:50,269 INFO L124 PetriNetUnfolderBase]: 410/823 cut-off events. [2024-06-14 12:01:50,269 INFO L125 PetriNetUnfolderBase]: For 31259/31259 co-relation queries the response was YES. [2024-06-14 12:01:50,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4087 conditions, 823 events. 410/823 cut-off events. For 31259/31259 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4577 event pairs, 72 based on Foata normal form. 2/825 useless extension candidates. Maximal degree in co-relation 3970. Up to 725 conditions per place. [2024-06-14 12:01:50,276 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-06-14 12:01:50,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 209 transitions, 2091 flow [2024-06-14 12:01:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:50,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:01:50,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-14 12:01:50,281 INFO L175 Difference]: Start difference. First operand has 254 places, 194 transitions, 1621 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:01:50,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 209 transitions, 2091 flow [2024-06-14 12:01:50,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 209 transitions, 2035 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:01:50,396 INFO L231 Difference]: Finished difference. Result has 248 places, 195 transitions, 1645 flow [2024-06-14 12:01:50,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1645, PETRI_PLACES=248, PETRI_TRANSITIONS=195} [2024-06-14 12:01:50,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-14 12:01:50,397 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 195 transitions, 1645 flow [2024-06-14 12:01:50,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:50,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:50,398 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 12:01:50,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:01:50,398 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 12:01:50,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:50,398 INFO L85 PathProgramCache]: Analyzing trace with hash -405925520, now seen corresponding path program 11 times [2024-06-14 12:01:50,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:50,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826602978] [2024-06-14 12:01:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:50,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:51,545 INFO 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 12:01:51,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:51,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826602978] [2024-06-14 12:01:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826602978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:51,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:51,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:51,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102571122] [2024-06-14 12:01:51,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:51,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:51,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:51,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:51,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:51,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 195 transitions, 1645 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:51,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:51,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:51,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:51,936 INFO L124 PetriNetUnfolderBase]: 414/827 cut-off events. [2024-06-14 12:01:51,936 INFO L125 PetriNetUnfolderBase]: For 31525/31525 co-relation queries the response was YES. [2024-06-14 12:01:51,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 827 events. 414/827 cut-off events. For 31525/31525 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4603 event pairs, 72 based on Foata normal form. 2/829 useless extension candidates. Maximal degree in co-relation 4040. Up to 721 conditions per place. [2024-06-14 12:01:51,943 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 175 selfloop transitions, 32 changer transitions 0/210 dead transitions. [2024-06-14 12:01:51,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 210 transitions, 2119 flow [2024-06-14 12:01:51,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:51,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:51,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:01:51,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-14 12:01:51,945 INFO L175 Difference]: Start difference. First operand has 248 places, 195 transitions, 1645 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:01:51,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 210 transitions, 2119 flow [2024-06-14 12:01:52,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 210 transitions, 2043 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:52,047 INFO L231 Difference]: Finished difference. Result has 249 places, 196 transitions, 1665 flow [2024-06-14 12:01:52,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1665, PETRI_PLACES=249, PETRI_TRANSITIONS=196} [2024-06-14 12:01:52,047 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-14 12:01:52,047 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 196 transitions, 1665 flow [2024-06-14 12:01:52,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:52,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:52,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:52,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:01:52,048 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 12:01:52,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:52,048 INFO L85 PathProgramCache]: Analyzing trace with hash -576805580, now seen corresponding path program 12 times [2024-06-14 12:01:52,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:52,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754788343] [2024-06-14 12:01:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:52,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:53,225 INFO 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 12:01:53,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:53,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754788343] [2024-06-14 12:01:53,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754788343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:53,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:53,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:53,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949803178] [2024-06-14 12:01:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:53,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:53,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:53,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:53,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 196 transitions, 1665 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:53,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:53,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:53,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:53,691 INFO L124 PetriNetUnfolderBase]: 426/855 cut-off events. [2024-06-14 12:01:53,691 INFO L125 PetriNetUnfolderBase]: For 44652/44652 co-relation queries the response was YES. [2024-06-14 12:01:53,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4253 conditions, 855 events. 426/855 cut-off events. For 44652/44652 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4789 event pairs, 72 based on Foata normal form. 8/863 useless extension candidates. Maximal degree in co-relation 4138. Up to 744 conditions per place. [2024-06-14 12:01:53,696 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 186 selfloop transitions, 14 changer transitions 11/214 dead transitions. [2024-06-14 12:01:53,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 214 transitions, 2167 flow [2024-06-14 12:01:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:01:53,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-14 12:01:53,698 INFO L175 Difference]: Start difference. First operand has 249 places, 196 transitions, 1665 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:01:53,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 214 transitions, 2167 flow [2024-06-14 12:01:53,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 214 transitions, 2081 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:53,804 INFO L231 Difference]: Finished difference. Result has 251 places, 193 transitions, 1572 flow [2024-06-14 12:01:53,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1572, PETRI_PLACES=251, PETRI_TRANSITIONS=193} [2024-06-14 12:01:53,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-14 12:01:53,805 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 193 transitions, 1572 flow [2024-06-14 12:01:53,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:53,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:53,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:53,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:01:53,805 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 12:01:53,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash -628632630, now seen corresponding path program 13 times [2024-06-14 12:01:53,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:53,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818805574] [2024-06-14 12:01:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:53,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:54,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:54,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818805574] [2024-06-14 12:01:54,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818805574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:54,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:54,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579545333] [2024-06-14 12:01:54,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:54,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:54,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:54,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:54,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:54,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 193 transitions, 1572 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:54,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:54,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:54,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:55,224 INFO L124 PetriNetUnfolderBase]: 419/842 cut-off events. [2024-06-14 12:01:55,224 INFO L125 PetriNetUnfolderBase]: For 45517/45517 co-relation queries the response was YES. [2024-06-14 12:01:55,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 842 events. 419/842 cut-off events. For 45517/45517 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4685 event pairs, 70 based on Foata normal form. 8/850 useless extension candidates. Maximal degree in co-relation 3998. Up to 726 conditions per place. [2024-06-14 12:01:55,231 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 12 changer transitions 14/212 dead transitions. [2024-06-14 12:01:55,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 212 transitions, 2072 flow [2024-06-14 12:01:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:01:55,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-14 12:01:55,232 INFO L175 Difference]: Start difference. First operand has 251 places, 193 transitions, 1572 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:01:55,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 212 transitions, 2072 flow [2024-06-14 12:01:55,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 212 transitions, 2036 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:55,347 INFO L231 Difference]: Finished difference. Result has 247 places, 189 transitions, 1537 flow [2024-06-14 12:01:55,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1537, PETRI_PLACES=247, PETRI_TRANSITIONS=189} [2024-06-14 12:01:55,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-14 12:01:55,348 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 189 transitions, 1537 flow [2024-06-14 12:01:55,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:55,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:55,348 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 12:01:55,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:01:55,348 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 12:01:55,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash -406103150, now seen corresponding path program 14 times [2024-06-14 12:01:55,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:55,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757953199] [2024-06-14 12:01:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:56,457 INFO 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 12:01:56,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:56,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757953199] [2024-06-14 12:01:56,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757953199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:56,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:56,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:01:56,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702374414] [2024-06-14 12:01:56,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:56,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:01:56,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:56,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:01:56,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:01:56,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:56,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 189 transitions, 1537 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:56,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:56,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:56,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:56,951 INFO L124 PetriNetUnfolderBase]: 422/845 cut-off events. [2024-06-14 12:01:56,951 INFO L125 PetriNetUnfolderBase]: For 51275/51275 co-relation queries the response was YES. [2024-06-14 12:01:56,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4760 conditions, 845 events. 422/845 cut-off events. For 51275/51275 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4683 event pairs, 82 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 4646. Up to 677 conditions per place. [2024-06-14 12:01:56,958 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 175 selfloop transitions, 31 changer transitions 0/209 dead transitions. [2024-06-14 12:01:56,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 209 transitions, 2209 flow [2024-06-14 12:01:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:56,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:01:56,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-14 12:01:56,959 INFO L175 Difference]: Start difference. First operand has 247 places, 189 transitions, 1537 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:01:56,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 209 transitions, 2209 flow [2024-06-14 12:01:57,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 209 transitions, 2175 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:57,111 INFO L231 Difference]: Finished difference. Result has 242 places, 190 transitions, 1603 flow [2024-06-14 12:01:57,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1603, PETRI_PLACES=242, PETRI_TRANSITIONS=190} [2024-06-14 12:01:57,112 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-14 12:01:57,112 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 190 transitions, 1603 flow [2024-06-14 12:01:57,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:57,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:57,113 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 12:01:57,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:01:57,113 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 12:01:57,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash -399662466, now seen corresponding path program 2 times [2024-06-14 12:01:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:57,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961191852] [2024-06-14 12:01:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:59,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:59,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961191852] [2024-06-14 12:01:59,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961191852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:59,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:59,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:01:59,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114635173] [2024-06-14 12:01:59,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:59,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:01:59,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:59,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:01:59,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:01:59,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:01:59,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 190 transitions, 1603 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:59,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:59,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:01:59,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:59,849 INFO L124 PetriNetUnfolderBase]: 434/877 cut-off events. [2024-06-14 12:01:59,849 INFO L125 PetriNetUnfolderBase]: For 64866/64866 co-relation queries the response was YES. [2024-06-14 12:01:59,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4944 conditions, 877 events. 434/877 cut-off events. For 64866/64866 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4931 event pairs, 90 based on Foata normal form. 8/885 useless extension candidates. Maximal degree in co-relation 4832. Up to 752 conditions per place. [2024-06-14 12:01:59,857 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 177 selfloop transitions, 21 changer transitions 7/208 dead transitions. [2024-06-14 12:01:59,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 208 transitions, 2101 flow [2024-06-14 12:01:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 12:01:59,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-14 12:01:59,873 INFO L175 Difference]: Start difference. First operand has 242 places, 190 transitions, 1603 flow. Second operand 12 states and 142 transitions. [2024-06-14 12:01:59,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 208 transitions, 2101 flow [2024-06-14 12:02:00,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 208 transitions, 2015 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:02:00,071 INFO L231 Difference]: Finished difference. Result has 245 places, 187 transitions, 1535 flow [2024-06-14 12:02:00,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1535, PETRI_PLACES=245, PETRI_TRANSITIONS=187} [2024-06-14 12:02:00,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-14 12:02:00,075 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 187 transitions, 1535 flow [2024-06-14 12:02:00,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:00,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:00,076 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 12:02:00,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:02:00,076 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 12:02:00,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:00,076 INFO L85 PathProgramCache]: Analyzing trace with hash -451143556, now seen corresponding path program 3 times [2024-06-14 12:02:00,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:00,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011391156] [2024-06-14 12:02:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:00,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:01,532 INFO 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 12:02:01,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:01,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011391156] [2024-06-14 12:02:01,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011391156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:01,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:01,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:01,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521952846] [2024-06-14 12:02:01,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:01,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:01,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:01,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:01,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 187 transitions, 1535 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:01,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:01,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:01,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:02,092 INFO L124 PetriNetUnfolderBase]: 407/824 cut-off events. [2024-06-14 12:02:02,093 INFO L125 PetriNetUnfolderBase]: For 46040/46040 co-relation queries the response was YES. [2024-06-14 12:02:02,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 824 events. 407/824 cut-off events. For 46040/46040 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4592 event pairs, 78 based on Foata normal form. 8/832 useless extension candidates. Maximal degree in co-relation 3942. Up to 693 conditions per place. [2024-06-14 12:02:02,100 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 172 selfloop transitions, 24 changer transitions 7/206 dead transitions. [2024-06-14 12:02:02,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 206 transitions, 2031 flow [2024-06-14 12:02:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:02:02,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:02:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-14 12:02:02,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771712158808933 [2024-06-14 12:02:02,101 INFO L175 Difference]: Start difference. First operand has 245 places, 187 transitions, 1535 flow. Second operand 13 states and 152 transitions. [2024-06-14 12:02:02,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 206 transitions, 2031 flow [2024-06-14 12:02:02,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 206 transitions, 1981 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:02:02,230 INFO L231 Difference]: Finished difference. Result has 245 places, 184 transitions, 1512 flow [2024-06-14 12:02:02,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1512, PETRI_PLACES=245, PETRI_TRANSITIONS=184} [2024-06-14 12:02:02,230 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-14 12:02:02,230 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 184 transitions, 1512 flow [2024-06-14 12:02:02,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:02,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:02,231 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 12:02:02,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:02:02,231 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 12:02:02,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash -399423456, now seen corresponding path program 4 times [2024-06-14 12:02:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:02,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579759261] [2024-06-14 12:02:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:03,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:03,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579759261] [2024-06-14 12:02:03,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579759261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:03,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:03,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:03,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71281571] [2024-06-14 12:02:03,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:03,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:03,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:03,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:03,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:03,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 184 transitions, 1512 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:03,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:03,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:03,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:04,373 INFO L124 PetriNetUnfolderBase]: 420/852 cut-off events. [2024-06-14 12:02:04,374 INFO L125 PetriNetUnfolderBase]: For 60075/60075 co-relation queries the response was YES. [2024-06-14 12:02:04,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 852 events. 420/852 cut-off events. For 60075/60075 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4762 event pairs, 65 based on Foata normal form. 6/858 useless extension candidates. Maximal degree in co-relation 4663. Up to 657 conditions per place. [2024-06-14 12:02:04,381 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 166 selfloop transitions, 29 changer transitions 7/205 dead transitions. [2024-06-14 12:02:04,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 205 transitions, 2186 flow [2024-06-14 12:02:04,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:02:04,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:02:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:02:04,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-14 12:02:04,392 INFO L175 Difference]: Start difference. First operand has 245 places, 184 transitions, 1512 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:02:04,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 205 transitions, 2186 flow [2024-06-14 12:02:04,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 205 transitions, 2130 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-14 12:02:04,646 INFO L231 Difference]: Finished difference. Result has 243 places, 181 transitions, 1488 flow [2024-06-14 12:02:04,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1488, PETRI_PLACES=243, PETRI_TRANSITIONS=181} [2024-06-14 12:02:04,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-14 12:02:04,647 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 181 transitions, 1488 flow [2024-06-14 12:02:04,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:04,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:04,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:04,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:02:04,648 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 12:02:04,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash -457630306, now seen corresponding path program 5 times [2024-06-14 12:02:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:04,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491620617] [2024-06-14 12:02:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:04,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:06,604 INFO 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 12:02:06,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:06,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491620617] [2024-06-14 12:02:06,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491620617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:06,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:06,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:06,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154592238] [2024-06-14 12:02:06,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:06,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:06,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:06,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:06,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:06,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:06,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 181 transitions, 1488 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:06,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:06,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:06,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:07,339 INFO L124 PetriNetUnfolderBase]: 395/798 cut-off events. [2024-06-14 12:02:07,339 INFO L125 PetriNetUnfolderBase]: For 46073/46073 co-relation queries the response was YES. [2024-06-14 12:02:07,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3956 conditions, 798 events. 395/798 cut-off events. For 46073/46073 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4395 event pairs, 76 based on Foata normal form. 8/806 useless extension candidates. Maximal degree in co-relation 3843. Up to 685 conditions per place. [2024-06-14 12:02:07,346 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 169 selfloop transitions, 18 changer transitions 9/199 dead transitions. [2024-06-14 12:02:07,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 199 transitions, 1968 flow [2024-06-14 12:02:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:02:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:02:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 12:02:07,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-14 12:02:07,348 INFO L175 Difference]: Start difference. First operand has 243 places, 181 transitions, 1488 flow. Second operand 12 states and 139 transitions. [2024-06-14 12:02:07,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 199 transitions, 1968 flow [2024-06-14 12:02:07,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 199 transitions, 1904 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:02:07,469 INFO L231 Difference]: Finished difference. Result has 241 places, 178 transitions, 1438 flow [2024-06-14 12:02:07,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1438, PETRI_PLACES=241, PETRI_TRANSITIONS=178} [2024-06-14 12:02:07,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-14 12:02:07,470 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 178 transitions, 1438 flow [2024-06-14 12:02:07,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:07,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:07,471 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 12:02:07,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:02:07,471 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 12:02:07,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:07,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1805617924, now seen corresponding path program 15 times [2024-06-14 12:02:07,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:07,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012593666] [2024-06-14 12:02:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:07,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:08,578 INFO 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 12:02:08,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:08,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012593666] [2024-06-14 12:02:08,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012593666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:08,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:08,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:08,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145385827] [2024-06-14 12:02:08,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:08,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:08,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:08,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:08,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:08,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:08,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 178 transitions, 1438 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:08,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:08,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:08,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:09,000 INFO L124 PetriNetUnfolderBase]: 382/771 cut-off events. [2024-06-14 12:02:09,000 INFO L125 PetriNetUnfolderBase]: For 32322/32322 co-relation queries the response was YES. [2024-06-14 12:02:09,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3816 conditions, 771 events. 382/771 cut-off events. For 32322/32322 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4221 event pairs, 49 based on Foata normal form. 2/773 useless extension candidates. Maximal degree in co-relation 3704. Up to 620 conditions per place. [2024-06-14 12:02:09,007 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 162 selfloop transitions, 29 changer transitions 0/194 dead transitions. [2024-06-14 12:02:09,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 194 transitions, 1886 flow [2024-06-14 12:02:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:09,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:02:09,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:02:09,008 INFO L175 Difference]: Start difference. First operand has 241 places, 178 transitions, 1438 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:02:09,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 194 transitions, 1886 flow [2024-06-14 12:02:09,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 194 transitions, 1844 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:02:09,122 INFO L231 Difference]: Finished difference. Result has 236 places, 179 transitions, 1494 flow [2024-06-14 12:02:09,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1494, PETRI_PLACES=236, PETRI_TRANSITIONS=179} [2024-06-14 12:02:09,122 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-14 12:02:09,122 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 179 transitions, 1494 flow [2024-06-14 12:02:09,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:09,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:09,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:09,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:02:09,123 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 12:02:09,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:09,123 INFO L85 PathProgramCache]: Analyzing trace with hash 107270666, now seen corresponding path program 16 times [2024-06-14 12:02:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:09,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762788679] [2024-06-14 12:02:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:09,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:10,126 INFO 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 12:02:10,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:10,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762788679] [2024-06-14 12:02:10,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762788679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:10,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:10,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:10,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904612590] [2024-06-14 12:02:10,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:10,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:10,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:10,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:10,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:10,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:10,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 179 transitions, 1494 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:10,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:10,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:10,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:10,594 INFO L124 PetriNetUnfolderBase]: 398/811 cut-off events. [2024-06-14 12:02:10,594 INFO L125 PetriNetUnfolderBase]: For 51585/51585 co-relation queries the response was YES. [2024-06-14 12:02:10,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4092 conditions, 811 events. 398/811 cut-off events. For 51585/51585 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4526 event pairs, 75 based on Foata normal form. 10/821 useless extension candidates. Maximal degree in co-relation 3981. Up to 655 conditions per place. [2024-06-14 12:02:10,600 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 156 selfloop transitions, 22 changer transitions 15/196 dead transitions. [2024-06-14 12:02:10,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 196 transitions, 1996 flow [2024-06-14 12:02:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:02:10,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-14 12:02:10,601 INFO L175 Difference]: Start difference. First operand has 236 places, 179 transitions, 1494 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:02:10,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 196 transitions, 1996 flow [2024-06-14 12:02:10,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 196 transitions, 1908 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 12:02:10,709 INFO L231 Difference]: Finished difference. Result has 238 places, 171 transitions, 1404 flow [2024-06-14 12:02:10,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1404, PETRI_PLACES=238, PETRI_TRANSITIONS=171} [2024-06-14 12:02:10,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-14 12:02:10,710 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 171 transitions, 1404 flow [2024-06-14 12:02:10,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:10,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:10,710 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 12:02:10,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:02:10,711 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 12:02:10,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash 107093036, now seen corresponding path program 17 times [2024-06-14 12:02:10,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:10,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537240529] [2024-06-14 12:02:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:10,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:11,655 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 12:02:11,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:11,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537240529] [2024-06-14 12:02:11,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537240529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:11,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:11,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:11,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373152432] [2024-06-14 12:02:11,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:11,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:11,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:11,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:11,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:11,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:11,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 171 transitions, 1404 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:11,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:11,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:11,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:12,066 INFO L124 PetriNetUnfolderBase]: 379/778 cut-off events. [2024-06-14 12:02:12,067 INFO L125 PetriNetUnfolderBase]: For 44154/44154 co-relation queries the response was YES. [2024-06-14 12:02:12,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 778 events. 379/778 cut-off events. For 44154/44154 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4268 event pairs, 64 based on Foata normal form. 8/786 useless extension candidates. Maximal degree in co-relation 3705. Up to 627 conditions per place. [2024-06-14 12:02:12,074 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 152 selfloop transitions, 18 changer transitions 15/188 dead transitions. [2024-06-14 12:02:12,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 188 transitions, 1852 flow [2024-06-14 12:02:12,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 12:02:12,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-14 12:02:12,076 INFO L175 Difference]: Start difference. First operand has 238 places, 171 transitions, 1404 flow. Second operand 10 states and 119 transitions. [2024-06-14 12:02:12,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 188 transitions, 1852 flow [2024-06-14 12:02:12,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 188 transitions, 1775 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-14 12:02:12,169 INFO L231 Difference]: Finished difference. Result has 229 places, 164 transitions, 1326 flow [2024-06-14 12:02:12,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1326, PETRI_PLACES=229, PETRI_TRANSITIONS=164} [2024-06-14 12:02:12,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-14 12:02:12,170 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 164 transitions, 1326 flow [2024-06-14 12:02:12,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:12,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:12,170 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 12:02:12,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:02:12,170 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 12:02:12,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:12,171 INFO L85 PathProgramCache]: Analyzing trace with hash 617551492, now seen corresponding path program 18 times [2024-06-14 12:02:12,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:12,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074695311] [2024-06-14 12:02:12,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:12,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:13,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:13,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074695311] [2024-06-14 12:02:13,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074695311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:13,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:13,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:13,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867225830] [2024-06-14 12:02:13,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:13,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:13,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:13,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:13,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:13,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:13,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 164 transitions, 1326 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:13,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:13,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:13,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:13,444 INFO L124 PetriNetUnfolderBase]: 361/744 cut-off events. [2024-06-14 12:02:13,444 INFO L125 PetriNetUnfolderBase]: For 39341/39341 co-relation queries the response was YES. [2024-06-14 12:02:13,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3582 conditions, 744 events. 361/744 cut-off events. For 39341/39341 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4027 event pairs, 55 based on Foata normal form. 8/752 useless extension candidates. Maximal degree in co-relation 3489. Up to 568 conditions per place. [2024-06-14 12:02:13,450 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 146 selfloop transitions, 13 changer transitions 21/183 dead transitions. [2024-06-14 12:02:13,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 183 transitions, 1762 flow [2024-06-14 12:02:13,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:13,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:13,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 12:02:13,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-14 12:02:13,452 INFO L175 Difference]: Start difference. First operand has 229 places, 164 transitions, 1326 flow. Second operand 10 states and 119 transitions. [2024-06-14 12:02:13,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 183 transitions, 1762 flow [2024-06-14 12:02:13,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 183 transitions, 1703 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 12:02:13,548 INFO L231 Difference]: Finished difference. Result has 220 places, 155 transitions, 1233 flow [2024-06-14 12:02:13,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1233, PETRI_PLACES=220, PETRI_TRANSITIONS=155} [2024-06-14 12:02:13,551 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-14 12:02:13,551 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 155 transitions, 1233 flow [2024-06-14 12:02:13,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:13,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:13,552 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 12:02:13,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:02:13,552 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 12:02:13,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash -771710940, now seen corresponding path program 19 times [2024-06-14 12:02:13,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:13,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423534028] [2024-06-14 12:02:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:13,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:14,574 INFO 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 12:02:14,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:14,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423534028] [2024-06-14 12:02:14,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423534028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:14,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:14,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:14,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398958389] [2024-06-14 12:02:14,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:14,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:14,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:14,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:14,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:14,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 155 transitions, 1233 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:14,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:14,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:14,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:15,010 INFO L124 PetriNetUnfolderBase]: 325/676 cut-off events. [2024-06-14 12:02:15,010 INFO L125 PetriNetUnfolderBase]: For 34682/34682 co-relation queries the response was YES. [2024-06-14 12:02:15,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3272 conditions, 676 events. 325/676 cut-off events. For 34682/34682 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3577 event pairs, 56 based on Foata normal form. 8/684 useless extension candidates. Maximal degree in co-relation 3183. Up to 562 conditions per place. [2024-06-14 12:02:15,016 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 143 selfloop transitions, 14 changer transitions 11/171 dead transitions. [2024-06-14 12:02:15,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 171 transitions, 1635 flow [2024-06-14 12:02:15,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:02:15,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:02:15,018 INFO L175 Difference]: Start difference. First operand has 220 places, 155 transitions, 1233 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:02:15,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 171 transitions, 1635 flow [2024-06-14 12:02:15,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 171 transitions, 1595 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 12:02:15,089 INFO L231 Difference]: Finished difference. Result has 209 places, 152 transitions, 1206 flow [2024-06-14 12:02:15,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1206, PETRI_PLACES=209, PETRI_TRANSITIONS=152} [2024-06-14 12:02:15,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-14 12:02:15,090 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 152 transitions, 1206 flow [2024-06-14 12:02:15,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:15,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:15,091 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 12:02:15,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:02:15,091 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 12:02:15,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:15,091 INFO L85 PathProgramCache]: Analyzing trace with hash -771826260, now seen corresponding path program 20 times [2024-06-14 12:02:15,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:15,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014479605] [2024-06-14 12:02:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:15,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:16,193 INFO 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 12:02:16,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014479605] [2024-06-14 12:02:16,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014479605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:16,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:16,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:16,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692004947] [2024-06-14 12:02:16,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:16,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:16,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:16,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:16,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:16,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:16,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 152 transitions, 1206 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:16,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:16,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:16,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:16,667 INFO L124 PetriNetUnfolderBase]: 318/663 cut-off events. [2024-06-14 12:02:16,667 INFO L125 PetriNetUnfolderBase]: For 30538/30538 co-relation queries the response was YES. [2024-06-14 12:02:16,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3176 conditions, 663 events. 318/663 cut-off events. For 30538/30538 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3485 event pairs, 52 based on Foata normal form. 8/671 useless extension candidates. Maximal degree in co-relation 3091. Up to 544 conditions per place. [2024-06-14 12:02:16,671 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 140 selfloop transitions, 12 changer transitions 14/169 dead transitions. [2024-06-14 12:02:16,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 169 transitions, 1604 flow [2024-06-14 12:02:16,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:02:16,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:02:16,673 INFO L175 Difference]: Start difference. First operand has 209 places, 152 transitions, 1206 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:02:16,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 169 transitions, 1604 flow [2024-06-14 12:02:16,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 169 transitions, 1570 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:02:16,739 INFO L231 Difference]: Finished difference. Result has 205 places, 148 transitions, 1179 flow [2024-06-14 12:02:16,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1179, PETRI_PLACES=205, PETRI_TRANSITIONS=148} [2024-06-14 12:02:16,739 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-14 12:02:16,739 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 148 transitions, 1179 flow [2024-06-14 12:02:16,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:16,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:16,740 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 12:02:16,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:02:16,740 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 12:02:16,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:16,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1628961080, now seen corresponding path program 21 times [2024-06-14 12:02:16,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:16,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386807196] [2024-06-14 12:02:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:16,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:18,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:18,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386807196] [2024-06-14 12:02:18,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386807196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:18,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:18,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:18,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535566287] [2024-06-14 12:02:18,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:18,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:18,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:18,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:18,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:18,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:18,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 148 transitions, 1179 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:18,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:18,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:18,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:18,670 INFO L124 PetriNetUnfolderBase]: 311/648 cut-off events. [2024-06-14 12:02:18,670 INFO L125 PetriNetUnfolderBase]: For 33178/33178 co-relation queries the response was YES. [2024-06-14 12:02:18,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3164 conditions, 648 events. 311/648 cut-off events. For 33178/33178 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3387 event pairs, 56 based on Foata normal form. 10/658 useless extension candidates. Maximal degree in co-relation 3081. Up to 494 conditions per place. [2024-06-14 12:02:18,675 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 32 changer transitions 6/164 dead transitions. [2024-06-14 12:02:18,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 164 transitions, 1591 flow [2024-06-14 12:02:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:02:18,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-14 12:02:18,677 INFO L175 Difference]: Start difference. First operand has 205 places, 148 transitions, 1179 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:02:18,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 164 transitions, 1591 flow [2024-06-14 12:02:18,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 164 transitions, 1561 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:02:18,733 INFO L231 Difference]: Finished difference. Result has 200 places, 146 transitions, 1219 flow [2024-06-14 12:02:18,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1219, PETRI_PLACES=200, PETRI_TRANSITIONS=146} [2024-06-14 12:02:18,734 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-14 12:02:18,734 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 146 transitions, 1219 flow [2024-06-14 12:02:18,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:18,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:18,735 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 12:02:18,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:02:18,735 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 12:02:18,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:18,735 INFO L85 PathProgramCache]: Analyzing trace with hash -600830880, now seen corresponding path program 22 times [2024-06-14 12:02:18,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:18,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194171775] [2024-06-14 12:02:18,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:18,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:20,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:20,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194171775] [2024-06-14 12:02:20,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194171775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:20,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:20,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:20,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097645501] [2024-06-14 12:02:20,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:20,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:20,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:20,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:20,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:20,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:20,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 146 transitions, 1219 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:20,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:20,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:20,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:20,532 INFO L124 PetriNetUnfolderBase]: 298/615 cut-off events. [2024-06-14 12:02:20,532 INFO L125 PetriNetUnfolderBase]: For 19736/19736 co-relation queries the response was YES. [2024-06-14 12:02:20,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 615 events. 298/615 cut-off events. For 19736/19736 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3162 event pairs, 52 based on Foata normal form. 2/617 useless extension candidates. Maximal degree in co-relation 3015. Up to 511 conditions per place. [2024-06-14 12:02:20,537 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 29 changer transitions 0/159 dead transitions. [2024-06-14 12:02:20,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 159 transitions, 1583 flow [2024-06-14 12:02:20,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:02:20,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:02:20,538 INFO L175 Difference]: Start difference. First operand has 200 places, 146 transitions, 1219 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:02:20,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 159 transitions, 1583 flow [2024-06-14 12:02:20,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 159 transitions, 1483 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-14 12:02:20,592 INFO L231 Difference]: Finished difference. Result has 200 places, 147 transitions, 1209 flow [2024-06-14 12:02:20,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1209, PETRI_PLACES=200, PETRI_TRANSITIONS=147} [2024-06-14 12:02:20,592 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-14 12:02:20,592 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 147 transitions, 1209 flow [2024-06-14 12:02:20,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:20,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:20,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:20,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:02:20,593 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 12:02:20,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash -601008510, now seen corresponding path program 23 times [2024-06-14 12:02:20,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:20,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070172041] [2024-06-14 12:02:20,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:20,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:21,929 INFO 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 12:02:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:21,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070172041] [2024-06-14 12:02:21,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070172041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:21,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:21,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:21,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867622470] [2024-06-14 12:02:21,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:21,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:21,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:22,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:22,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 147 transitions, 1209 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:22,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:22,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:22,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:22,391 INFO L124 PetriNetUnfolderBase]: 302/623 cut-off events. [2024-06-14 12:02:22,391 INFO L125 PetriNetUnfolderBase]: For 19719/19719 co-relation queries the response was YES. [2024-06-14 12:02:22,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 623 events. 302/623 cut-off events. For 19719/19719 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3230 event pairs, 50 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 3023. Up to 470 conditions per place. [2024-06-14 12:02:22,396 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 37 changer transitions 0/161 dead transitions. [2024-06-14 12:02:22,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 161 transitions, 1579 flow [2024-06-14 12:02:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:02:22,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 12:02:22,398 INFO L175 Difference]: Start difference. First operand has 200 places, 147 transitions, 1209 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:02:22,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 161 transitions, 1579 flow [2024-06-14 12:02:22,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 161 transitions, 1501 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:02:22,453 INFO L231 Difference]: Finished difference. Result has 202 places, 148 transitions, 1237 flow [2024-06-14 12:02:22,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1237, PETRI_PLACES=202, PETRI_TRANSITIONS=148} [2024-06-14 12:02:22,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-14 12:02:22,454 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 148 transitions, 1237 flow [2024-06-14 12:02:22,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:22,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:22,454 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 12:02:22,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:02:22,455 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 12:02:22,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:22,455 INFO L85 PathProgramCache]: Analyzing trace with hash -594567826, now seen corresponding path program 6 times [2024-06-14 12:02:22,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:22,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111021220] [2024-06-14 12:02:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:22,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:23,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:23,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111021220] [2024-06-14 12:02:23,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111021220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:23,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:23,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:23,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95715526] [2024-06-14 12:02:23,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:23,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:23,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:23,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:23,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:24,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:24,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 148 transitions, 1237 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:24,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:24,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:24,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:24,474 INFO L124 PetriNetUnfolderBase]: 314/655 cut-off events. [2024-06-14 12:02:24,475 INFO L125 PetriNetUnfolderBase]: For 28136/28136 co-relation queries the response was YES. [2024-06-14 12:02:24,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3233 conditions, 655 events. 314/655 cut-off events. For 28136/28136 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3454 event pairs, 60 based on Foata normal form. 8/663 useless extension candidates. Maximal degree in co-relation 3151. Up to 524 conditions per place. [2024-06-14 12:02:24,480 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 26 changer transitions 9/164 dead transitions. [2024-06-14 12:02:24,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 164 transitions, 1629 flow [2024-06-14 12:02:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:02:24,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 12:02:24,481 INFO L175 Difference]: Start difference. First operand has 202 places, 148 transitions, 1237 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:02:24,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 164 transitions, 1629 flow [2024-06-14 12:02:24,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 164 transitions, 1548 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:02:24,535 INFO L231 Difference]: Finished difference. Result has 206 places, 145 transitions, 1188 flow [2024-06-14 12:02:24,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1188, PETRI_PLACES=206, PETRI_TRANSITIONS=145} [2024-06-14 12:02:24,536 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-14 12:02:24,536 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 145 transitions, 1188 flow [2024-06-14 12:02:24,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:24,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:24,545 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 12:02:24,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:02:24,546 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:24,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1628715126, now seen corresponding path program 7 times [2024-06-14 12:02:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:24,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480681667] [2024-06-14 12:02:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:24,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:26,016 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 12:02:26,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:26,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480681667] [2024-06-14 12:02:26,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480681667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:26,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:26,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:26,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340957832] [2024-06-14 12:02:26,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:26,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:26,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:26,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:26,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:26,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 145 transitions, 1188 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:26,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:26,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:26,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:26,514 INFO L124 PetriNetUnfolderBase]: 327/686 cut-off events. [2024-06-14 12:02:26,514 INFO L125 PetriNetUnfolderBase]: For 37079/37079 co-relation queries the response was YES. [2024-06-14 12:02:26,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 686 events. 327/686 cut-off events. For 37079/37079 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3676 event pairs, 68 based on Foata normal form. 6/692 useless extension candidates. Maximal degree in co-relation 3655. Up to 464 conditions per place. [2024-06-14 12:02:26,519 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 130 selfloop transitions, 24 changer transitions 7/164 dead transitions. [2024-06-14 12:02:26,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 164 transitions, 1722 flow [2024-06-14 12:02:26,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:26,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:02:26,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 12:02:26,520 INFO L175 Difference]: Start difference. First operand has 206 places, 145 transitions, 1188 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:02:26,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 164 transitions, 1722 flow [2024-06-14 12:02:26,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 164 transitions, 1662 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:02:26,602 INFO L231 Difference]: Finished difference. Result has 203 places, 142 transitions, 1161 flow [2024-06-14 12:02:26,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1161, PETRI_PLACES=203, PETRI_TRANSITIONS=142} [2024-06-14 12:02:26,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-14 12:02:26,604 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 142 transitions, 1161 flow [2024-06-14 12:02:26,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:26,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:26,604 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 12:02:26,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:02:26,604 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:26,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:26,605 INFO L85 PathProgramCache]: Analyzing trace with hash -600823936, now seen corresponding path program 8 times [2024-06-14 12:02:26,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:26,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729352048] [2024-06-14 12:02:26,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:26,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:28,353 INFO 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 12:02:28,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:28,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729352048] [2024-06-14 12:02:28,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729352048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:28,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:28,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:28,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142784678] [2024-06-14 12:02:28,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:28,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:28,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:28,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:28,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:28,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:28,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 142 transitions, 1161 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:28,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:28,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:28,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:28,860 INFO L124 PetriNetUnfolderBase]: 317/664 cut-off events. [2024-06-14 12:02:28,860 INFO L125 PetriNetUnfolderBase]: For 36124/36124 co-relation queries the response was YES. [2024-06-14 12:02:28,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 664 events. 317/664 cut-off events. For 36124/36124 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3509 event pairs, 73 based on Foata normal form. 8/672 useless extension candidates. Maximal degree in co-relation 3405. Up to 517 conditions per place. [2024-06-14 12:02:28,865 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 20 changer transitions 16/158 dead transitions. [2024-06-14 12:02:28,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 158 transitions, 1541 flow [2024-06-14 12:02:28,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:02:28,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-14 12:02:28,866 INFO L175 Difference]: Start difference. First operand has 203 places, 142 transitions, 1161 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:02:28,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 158 transitions, 1541 flow [2024-06-14 12:02:28,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 158 transitions, 1493 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:02:28,951 INFO L231 Difference]: Finished difference. Result has 201 places, 133 transitions, 1065 flow [2024-06-14 12:02:28,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1065, PETRI_PLACES=201, PETRI_TRANSITIONS=133} [2024-06-14 12:02:28,951 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-14 12:02:28,951 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 133 transitions, 1065 flow [2024-06-14 12:02:28,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:28,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:28,952 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 12:02:28,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:02:28,952 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:28,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:28,952 INFO L85 PathProgramCache]: Analyzing trace with hash -506293118, now seen corresponding path program 24 times [2024-06-14 12:02:28,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:28,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564388231] [2024-06-14 12:02:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:28,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:29,939 INFO 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 12:02:29,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:29,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564388231] [2024-06-14 12:02:29,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564388231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:29,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:29,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:29,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174743705] [2024-06-14 12:02:29,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:29,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:29,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:29,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:29,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:30,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:30,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 133 transitions, 1065 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:30,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:30,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:30,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:30,358 INFO L124 PetriNetUnfolderBase]: 320/677 cut-off events. [2024-06-14 12:02:30,359 INFO L125 PetriNetUnfolderBase]: For 42769/42769 co-relation queries the response was YES. [2024-06-14 12:02:30,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3877 conditions, 677 events. 320/677 cut-off events. For 42769/42769 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3551 event pairs, 86 based on Foata normal form. 8/685 useless extension candidates. Maximal degree in co-relation 3797. Up to 489 conditions per place. [2024-06-14 12:02:30,364 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 124 selfloop transitions, 17 changer transitions 10/154 dead transitions. [2024-06-14 12:02:30,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 154 transitions, 1605 flow [2024-06-14 12:02:30,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:30,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:02:30,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:02:30,365 INFO L175 Difference]: Start difference. First operand has 201 places, 133 transitions, 1065 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:02:30,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 154 transitions, 1605 flow [2024-06-14 12:02:30,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 154 transitions, 1511 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-06-14 12:02:30,444 INFO L231 Difference]: Finished difference. Result has 191 places, 131 transitions, 1020 flow [2024-06-14 12:02:30,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1020, PETRI_PLACES=191, PETRI_TRANSITIONS=131} [2024-06-14 12:02:30,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-14 12:02:30,445 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 131 transitions, 1020 flow [2024-06-14 12:02:30,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:30,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:30,445 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 12:02:30,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:02:30,445 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:30,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:30,446 INFO L85 PathProgramCache]: Analyzing trace with hash -958317766, now seen corresponding path program 25 times [2024-06-14 12:02:30,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:30,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536808530] [2024-06-14 12:02:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:30,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:31,489 INFO 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 12:02:31,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:31,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536808530] [2024-06-14 12:02:31,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536808530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:31,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:31,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:31,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408783642] [2024-06-14 12:02:31,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:31,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:31,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:31,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:31,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:31,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:31,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 131 transitions, 1020 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:31,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:31,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:31,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:31,789 INFO L124 PetriNetUnfolderBase]: 289/612 cut-off events. [2024-06-14 12:02:31,790 INFO L125 PetriNetUnfolderBase]: For 28954/28954 co-relation queries the response was YES. [2024-06-14 12:02:31,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3365 conditions, 612 events. 289/612 cut-off events. For 28954/28954 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3116 event pairs, 77 based on Foata normal form. 2/614 useless extension candidates. Maximal degree in co-relation 3288. Up to 529 conditions per place. [2024-06-14 12:02:31,795 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 120 selfloop transitions, 19 changer transitions 1/143 dead transitions. [2024-06-14 12:02:31,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 143 transitions, 1343 flow [2024-06-14 12:02:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 12:02:31,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-14 12:02:31,796 INFO L175 Difference]: Start difference. First operand has 191 places, 131 transitions, 1020 flow. Second operand 10 states and 114 transitions. [2024-06-14 12:02:31,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 143 transitions, 1343 flow [2024-06-14 12:02:31,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 143 transitions, 1302 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:02:31,861 INFO L231 Difference]: Finished difference. Result has 192 places, 132 transitions, 1043 flow [2024-06-14 12:02:31,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1043, PETRI_PLACES=192, PETRI_TRANSITIONS=132} [2024-06-14 12:02:31,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-14 12:02:31,862 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 132 transitions, 1043 flow [2024-06-14 12:02:31,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:31,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:31,862 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 12:02:31,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:02:31,862 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:31,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash -963079366, now seen corresponding path program 26 times [2024-06-14 12:02:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:31,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450281299] [2024-06-14 12:02:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:31,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:32,787 INFO 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 12:02:32,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:32,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450281299] [2024-06-14 12:02:32,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450281299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:32,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:32,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:32,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25524371] [2024-06-14 12:02:32,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:32,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:32,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:32,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:32,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:32,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:32,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 132 transitions, 1043 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:32,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:32,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:32,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:33,151 INFO L124 PetriNetUnfolderBase]: 300/637 cut-off events. [2024-06-14 12:02:33,151 INFO L125 PetriNetUnfolderBase]: For 33761/33761 co-relation queries the response was YES. [2024-06-14 12:02:33,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3449 conditions, 637 events. 300/637 cut-off events. For 33761/33761 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3276 event pairs, 75 based on Foata normal form. 8/645 useless extension candidates. Maximal degree in co-relation 3372. Up to 520 conditions per place. [2024-06-14 12:02:33,156 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 117 selfloop transitions, 15 changer transitions 12/147 dead transitions. [2024-06-14 12:02:33,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 147 transitions, 1387 flow [2024-06-14 12:02:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:02:33,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-14 12:02:33,158 INFO L175 Difference]: Start difference. First operand has 192 places, 132 transitions, 1043 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:02:33,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 147 transitions, 1387 flow [2024-06-14 12:02:33,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 147 transitions, 1333 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:02:33,227 INFO L231 Difference]: Finished difference. Result has 193 places, 129 transitions, 1006 flow [2024-06-14 12:02:33,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1006, PETRI_PLACES=193, PETRI_TRANSITIONS=129} [2024-06-14 12:02:33,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-14 12:02:33,228 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 129 transitions, 1006 flow [2024-06-14 12:02:33,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:33,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:33,228 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 12:02:33,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:02:33,228 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:33,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:33,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1658075308, now seen corresponding path program 27 times [2024-06-14 12:02:33,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:33,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378961772] [2024-06-14 12:02:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:33,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:34,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:34,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378961772] [2024-06-14 12:02:34,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378961772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:34,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:34,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:34,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435978761] [2024-06-14 12:02:34,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:34,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:34,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:34,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:34,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:34,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:34,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 129 transitions, 1006 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:34,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:34,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:34,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:34,855 INFO L124 PetriNetUnfolderBase]: 282/599 cut-off events. [2024-06-14 12:02:34,855 INFO L125 PetriNetUnfolderBase]: For 29139/29139 co-relation queries the response was YES. [2024-06-14 12:02:34,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3323 conditions, 599 events. 282/599 cut-off events. For 29139/29139 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3040 event pairs, 77 based on Foata normal form. 2/601 useless extension candidates. Maximal degree in co-relation 3246. Up to 501 conditions per place. [2024-06-14 12:02:34,859 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 112 selfloop transitions, 25 changer transitions 0/140 dead transitions. [2024-06-14 12:02:34,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 140 transitions, 1320 flow [2024-06-14 12:02:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:34,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:02:34,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:02:34,861 INFO L175 Difference]: Start difference. First operand has 193 places, 129 transitions, 1006 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:02:34,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 140 transitions, 1320 flow [2024-06-14 12:02:34,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 140 transitions, 1284 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:02:34,920 INFO L231 Difference]: Finished difference. Result has 189 places, 130 transitions, 1044 flow [2024-06-14 12:02:34,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1044, PETRI_PLACES=189, PETRI_TRANSITIONS=130} [2024-06-14 12:02:34,920 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-14 12:02:34,920 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 130 transitions, 1044 flow [2024-06-14 12:02:34,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:34,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:34,921 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 12:02:34,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:02:34,921 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:34,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:34,922 INFO L85 PathProgramCache]: Analyzing trace with hash -792261616, now seen corresponding path program 28 times [2024-06-14 12:02:34,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:34,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381172714] [2024-06-14 12:02:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:34,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:36,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:36,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381172714] [2024-06-14 12:02:36,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381172714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:36,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:36,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:36,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080260007] [2024-06-14 12:02:36,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:36,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:36,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:36,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:36,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:36,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:36,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 130 transitions, 1044 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:36,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:36,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:36,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:36,777 INFO L124 PetriNetUnfolderBase]: 293/620 cut-off events. [2024-06-14 12:02:36,777 INFO L125 PetriNetUnfolderBase]: For 29444/29444 co-relation queries the response was YES. [2024-06-14 12:02:36,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3535 conditions, 620 events. 293/620 cut-off events. For 29444/29444 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3150 event pairs, 76 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 3460. Up to 499 conditions per place. [2024-06-14 12:02:36,782 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 114 selfloop transitions, 27 changer transitions 0/144 dead transitions. [2024-06-14 12:02:36,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 144 transitions, 1486 flow [2024-06-14 12:02:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:36,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:02:36,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:02:36,784 INFO L175 Difference]: Start difference. First operand has 189 places, 130 transitions, 1044 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:02:36,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 144 transitions, 1486 flow [2024-06-14 12:02:36,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 144 transitions, 1422 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:02:36,844 INFO L231 Difference]: Finished difference. Result has 191 places, 132 transitions, 1080 flow [2024-06-14 12:02:36,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1080, PETRI_PLACES=191, PETRI_TRANSITIONS=132} [2024-06-14 12:02:36,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-14 12:02:36,844 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 132 transitions, 1080 flow [2024-06-14 12:02:36,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:36,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:36,845 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 12:02:36,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:02:36,845 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:36,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:36,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1627921342, now seen corresponding path program 29 times [2024-06-14 12:02:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:36,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807731039] [2024-06-14 12:02:36,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:36,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:37,909 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 12:02:37,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807731039] [2024-06-14 12:02:37,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807731039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:37,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:37,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:37,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032309586] [2024-06-14 12:02:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:37,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:37,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:37,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:37,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:37,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:37,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 132 transitions, 1080 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:37,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:37,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:37,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:38,173 INFO L124 PetriNetUnfolderBase]: 297/628 cut-off events. [2024-06-14 12:02:38,173 INFO L125 PetriNetUnfolderBase]: For 30781/30781 co-relation queries the response was YES. [2024-06-14 12:02:38,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3608 conditions, 628 events. 297/628 cut-off events. For 30781/30781 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3204 event pairs, 80 based on Foata normal form. 2/630 useless extension candidates. Maximal degree in co-relation 3532. Up to 438 conditions per place. [2024-06-14 12:02:38,178 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 60 changer transitions 0/143 dead transitions. [2024-06-14 12:02:38,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 143 transitions, 1404 flow [2024-06-14 12:02:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:02:38,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 12:02:38,180 INFO L175 Difference]: Start difference. First operand has 191 places, 132 transitions, 1080 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:02:38,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 143 transitions, 1404 flow [2024-06-14 12:02:38,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 143 transitions, 1352 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 12:02:38,249 INFO L231 Difference]: Finished difference. Result has 195 places, 133 transitions, 1176 flow [2024-06-14 12:02:38,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1176, PETRI_PLACES=195, PETRI_TRANSITIONS=133} [2024-06-14 12:02:38,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-14 12:02:38,250 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 133 transitions, 1176 flow [2024-06-14 12:02:38,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:38,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:38,250 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 12:02:38,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:02:38,251 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:38,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:38,251 INFO L85 PathProgramCache]: Analyzing trace with hash -822588562, now seen corresponding path program 30 times [2024-06-14 12:02:38,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:38,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999872280] [2024-06-14 12:02:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:39,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:39,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999872280] [2024-06-14 12:02:39,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999872280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:39,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:39,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:39,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475265557] [2024-06-14 12:02:39,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:39,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:39,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:39,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:39,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:39,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 133 transitions, 1176 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:39,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:39,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:39,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:39,668 INFO L124 PetriNetUnfolderBase]: 323/682 cut-off events. [2024-06-14 12:02:39,669 INFO L125 PetriNetUnfolderBase]: For 41436/41436 co-relation queries the response was YES. [2024-06-14 12:02:39,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 682 events. 323/682 cut-off events. For 41436/41436 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3577 event pairs, 90 based on Foata normal form. 2/684 useless extension candidates. Maximal degree in co-relation 4268. Up to 413 conditions per place. [2024-06-14 12:02:39,674 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 62 changer transitions 0/149 dead transitions. [2024-06-14 12:02:39,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 149 transitions, 1654 flow [2024-06-14 12:02:39,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:02:39,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 12:02:39,676 INFO L175 Difference]: Start difference. First operand has 195 places, 133 transitions, 1176 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:02:39,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 149 transitions, 1654 flow [2024-06-14 12:02:39,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 149 transitions, 1516 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:02:39,765 INFO L231 Difference]: Finished difference. Result has 197 places, 134 transitions, 1190 flow [2024-06-14 12:02:39,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1190, PETRI_PLACES=197, PETRI_TRANSITIONS=134} [2024-06-14 12:02:39,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-14 12:02:39,766 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 134 transitions, 1190 flow [2024-06-14 12:02:39,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:39,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:39,767 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 12:02:39,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:02:39,767 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:39,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:39,767 INFO L85 PathProgramCache]: Analyzing trace with hash -785827876, now seen corresponding path program 31 times [2024-06-14 12:02:39,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:39,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144319667] [2024-06-14 12:02:39,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:39,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:41,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:41,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144319667] [2024-06-14 12:02:41,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144319667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:41,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:41,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:41,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035904767] [2024-06-14 12:02:41,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:41,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:41,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:41,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:41,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:41,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:41,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 134 transitions, 1190 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:41,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:41,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:41,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:41,386 INFO L124 PetriNetUnfolderBase]: 320/677 cut-off events. [2024-06-14 12:02:41,386 INFO L125 PetriNetUnfolderBase]: For 40459/40459 co-relation queries the response was YES. [2024-06-14 12:02:41,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4229 conditions, 677 events. 320/677 cut-off events. For 40459/40459 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3542 event pairs, 91 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 4150. Up to 579 conditions per place. [2024-06-14 12:02:41,391 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 115 selfloop transitions, 26 changer transitions 0/144 dead transitions. [2024-06-14 12:02:41,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 144 transitions, 1494 flow [2024-06-14 12:02:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:41,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:02:41,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-14 12:02:41,393 INFO L175 Difference]: Start difference. First operand has 197 places, 134 transitions, 1190 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:02:41,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 144 transitions, 1494 flow [2024-06-14 12:02:41,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 144 transitions, 1331 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 12:02:41,478 INFO L231 Difference]: Finished difference. Result has 199 places, 134 transitions, 1083 flow [2024-06-14 12:02:41,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1083, PETRI_PLACES=199, PETRI_TRANSITIONS=134} [2024-06-14 12:02:41,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-14 12:02:41,479 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 134 transitions, 1083 flow [2024-06-14 12:02:41,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:41,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:41,479 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 12:02:41,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:02:41,480 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:41,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:41,480 INFO L85 PathProgramCache]: Analyzing trace with hash -816154822, now seen corresponding path program 32 times [2024-06-14 12:02:41,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:41,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478599415] [2024-06-14 12:02:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:41,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:42,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:42,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478599415] [2024-06-14 12:02:42,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478599415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:42,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:42,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:42,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450675399] [2024-06-14 12:02:42,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:42,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:42,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:42,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 134 transitions, 1083 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:42,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:42,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:42,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:42,905 INFO L124 PetriNetUnfolderBase]: 336/713 cut-off events. [2024-06-14 12:02:42,905 INFO L125 PetriNetUnfolderBase]: For 51634/51634 co-relation queries the response was YES. [2024-06-14 12:02:42,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4267 conditions, 713 events. 336/713 cut-off events. For 51634/51634 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3811 event pairs, 95 based on Foata normal form. 10/723 useless extension candidates. Maximal degree in co-relation 4188. Up to 491 conditions per place. [2024-06-14 12:02:42,911 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 87 selfloop transitions, 52 changer transitions 6/148 dead transitions. [2024-06-14 12:02:42,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 148 transitions, 1456 flow [2024-06-14 12:02:42,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:42,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 12:02:42,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-14 12:02:42,912 INFO L175 Difference]: Start difference. First operand has 199 places, 134 transitions, 1083 flow. Second operand 10 states and 129 transitions. [2024-06-14 12:02:42,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 148 transitions, 1456 flow [2024-06-14 12:02:42,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 148 transitions, 1398 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:02:42,994 INFO L231 Difference]: Finished difference. Result has 200 places, 132 transitions, 1136 flow [2024-06-14 12:02:42,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1136, PETRI_PLACES=200, PETRI_TRANSITIONS=132} [2024-06-14 12:02:42,995 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-14 12:02:42,995 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 132 transitions, 1136 flow [2024-06-14 12:02:42,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:42,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:42,995 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 12:02:42,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:02:42,996 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:42,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:42,996 INFO L85 PathProgramCache]: Analyzing trace with hash 995758670, now seen corresponding path program 33 times [2024-06-14 12:02:42,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:42,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501456115] [2024-06-14 12:02:42,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:42,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:44,039 INFO 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 12:02:44,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:44,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501456115] [2024-06-14 12:02:44,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501456115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:44,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:44,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:44,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930885001] [2024-06-14 12:02:44,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:44,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:44,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:44,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:44,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:44,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:44,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 132 transitions, 1136 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:44,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:44,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:44,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:44,419 INFO L124 PetriNetUnfolderBase]: 306/656 cut-off events. [2024-06-14 12:02:44,419 INFO L125 PetriNetUnfolderBase]: For 40747/40747 co-relation queries the response was YES. [2024-06-14 12:02:44,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3579 conditions, 656 events. 306/656 cut-off events. For 40747/40747 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3436 event pairs, 107 based on Foata normal form. 10/666 useless extension candidates. Maximal degree in co-relation 3499. Up to 540 conditions per place. [2024-06-14 12:02:44,423 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 115 selfloop transitions, 20 changer transitions 7/145 dead transitions. [2024-06-14 12:02:44,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 145 transitions, 1480 flow [2024-06-14 12:02:44,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:44,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:02:44,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 12:02:44,424 INFO L175 Difference]: Start difference. First operand has 200 places, 132 transitions, 1136 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:02:44,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 145 transitions, 1480 flow [2024-06-14 12:02:44,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 145 transitions, 1334 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-14 12:02:44,503 INFO L231 Difference]: Finished difference. Result has 200 places, 128 transitions, 1007 flow [2024-06-14 12:02:44,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1007, PETRI_PLACES=200, PETRI_TRANSITIONS=128} [2024-06-14 12:02:44,503 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-14 12:02:44,503 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 128 transitions, 1007 flow [2024-06-14 12:02:44,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:44,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:44,505 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 12:02:44,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:02:44,505 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:44,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:44,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1169227780, now seen corresponding path program 9 times [2024-06-14 12:02:44,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:44,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297006182] [2024-06-14 12:02:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:44,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:46,242 INFO 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 12:02:46,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:46,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297006182] [2024-06-14 12:02:46,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297006182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:46,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:46,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:46,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368784611] [2024-06-14 12:02:46,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:46,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:46,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:46,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:46,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 128 transitions, 1007 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:46,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:46,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:46,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:46,841 INFO L124 PetriNetUnfolderBase]: 299/645 cut-off events. [2024-06-14 12:02:46,841 INFO L125 PetriNetUnfolderBase]: For 36056/36056 co-relation queries the response was YES. [2024-06-14 12:02:46,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 645 events. 299/645 cut-off events. For 36056/36056 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3378 event pairs, 101 based on Foata normal form. 6/651 useless extension candidates. Maximal degree in co-relation 3326. Up to 544 conditions per place. [2024-06-14 12:02:46,846 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 18 changer transitions 10/144 dead transitions. [2024-06-14 12:02:46,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 144 transitions, 1349 flow [2024-06-14 12:02:46,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:02:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:02:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 12:02:46,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-14 12:02:46,847 INFO L175 Difference]: Start difference. First operand has 200 places, 128 transitions, 1007 flow. Second operand 12 states and 136 transitions. [2024-06-14 12:02:46,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 144 transitions, 1349 flow [2024-06-14 12:02:46,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 144 transitions, 1253 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:02:46,918 INFO L231 Difference]: Finished difference. Result has 202 places, 126 transitions, 937 flow [2024-06-14 12:02:46,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=937, PETRI_PLACES=202, PETRI_TRANSITIONS=126} [2024-06-14 12:02:46,918 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-14 12:02:46,918 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 126 transitions, 937 flow [2024-06-14 12:02:46,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:46,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:46,919 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 12:02:46,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:02:46,919 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:46,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1658255232, now seen corresponding path program 10 times [2024-06-14 12:02:46,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:46,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228636245] [2024-06-14 12:02:46,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:46,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:48,589 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 12:02:48,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:48,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228636245] [2024-06-14 12:02:48,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228636245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:48,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:48,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:48,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110227581] [2024-06-14 12:02:48,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:48,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:48,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:48,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:48,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:48,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:48,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 126 transitions, 937 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:48,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:48,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:48,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:49,111 INFO L124 PetriNetUnfolderBase]: 296/641 cut-off events. [2024-06-14 12:02:49,112 INFO L125 PetriNetUnfolderBase]: For 40927/40927 co-relation queries the response was YES. [2024-06-14 12:02:49,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3351 conditions, 641 events. 296/641 cut-off events. For 40927/40927 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3370 event pairs, 76 based on Foata normal form. 8/649 useless extension candidates. Maximal degree in co-relation 3269. Up to 470 conditions per place. [2024-06-14 12:02:49,116 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 29 changer transitions 13/138 dead transitions. [2024-06-14 12:02:49,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 138 transitions, 1263 flow [2024-06-14 12:02:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:49,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:02:49,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 12:02:49,118 INFO L175 Difference]: Start difference. First operand has 202 places, 126 transitions, 937 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:02:49,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 138 transitions, 1263 flow [2024-06-14 12:02:49,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 138 transitions, 1192 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:02:49,190 INFO L231 Difference]: Finished difference. Result has 197 places, 120 transitions, 898 flow [2024-06-14 12:02:49,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=898, PETRI_PLACES=197, PETRI_TRANSITIONS=120} [2024-06-14 12:02:49,190 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-14 12:02:49,190 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 120 transitions, 898 flow [2024-06-14 12:02:49,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:49,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:49,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:49,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:02:49,191 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:49,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:49,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1027561480, now seen corresponding path program 11 times [2024-06-14 12:02:49,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:49,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025185802] [2024-06-14 12:02:49,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:49,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:50,858 INFO 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 12:02:50,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:50,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025185802] [2024-06-14 12:02:50,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025185802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:50,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:50,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:50,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112092845] [2024-06-14 12:02:50,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:50,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:50,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:50,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:50,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:50,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:50,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 120 transitions, 898 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:50,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:50,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:50,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:51,311 INFO L124 PetriNetUnfolderBase]: 302/658 cut-off events. [2024-06-14 12:02:51,312 INFO L125 PetriNetUnfolderBase]: For 46530/46530 co-relation queries the response was YES. [2024-06-14 12:02:51,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3792 conditions, 658 events. 302/658 cut-off events. For 46530/46530 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3476 event pairs, 113 based on Foata normal form. 6/664 useless extension candidates. Maximal degree in co-relation 3713. Up to 513 conditions per place. [2024-06-14 12:02:51,317 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 15 changer transitions 7/138 dead transitions. [2024-06-14 12:02:51,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 138 transitions, 1364 flow [2024-06-14 12:02:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:51,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:02:51,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 12:02:51,318 INFO L175 Difference]: Start difference. First operand has 197 places, 120 transitions, 898 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:02:51,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 138 transitions, 1364 flow [2024-06-14 12:02:51,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 138 transitions, 1290 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 12:02:51,407 INFO L231 Difference]: Finished difference. Result has 191 places, 117 transitions, 845 flow [2024-06-14 12:02:51,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=845, PETRI_PLACES=191, PETRI_TRANSITIONS=117} [2024-06-14 12:02:51,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-14 12:02:51,408 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 117 transitions, 845 flow [2024-06-14 12:02:51,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:51,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:51,408 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 12:02:51,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:02:51,408 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:51,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:51,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1664741982, now seen corresponding path program 12 times [2024-06-14 12:02:51,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:51,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506228531] [2024-06-14 12:02:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:51,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:52,747 INFO 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 12:02:52,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:52,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506228531] [2024-06-14 12:02:52,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506228531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:52,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:52,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:52,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476931156] [2024-06-14 12:02:52,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:52,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:52,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:52,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:52,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:52,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:52,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 117 transitions, 845 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:52,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:52,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:52,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:53,159 INFO L124 PetriNetUnfolderBase]: 299/654 cut-off events. [2024-06-14 12:02:53,159 INFO L125 PetriNetUnfolderBase]: For 44543/44543 co-relation queries the response was YES. [2024-06-14 12:02:53,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 654 events. 299/654 cut-off events. For 44543/44543 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3471 event pairs, 88 based on Foata normal form. 8/662 useless extension candidates. Maximal degree in co-relation 3593. Up to 499 conditions per place. [2024-06-14 12:02:53,164 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 27 changer transitions 9/129 dead transitions. [2024-06-14 12:02:53,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 129 transitions, 1151 flow [2024-06-14 12:02:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:02:53,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-14 12:02:53,165 INFO L175 Difference]: Start difference. First operand has 191 places, 117 transitions, 845 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:02:53,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 129 transitions, 1151 flow [2024-06-14 12:02:53,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 129 transitions, 1114 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 12:02:53,247 INFO L231 Difference]: Finished difference. Result has 187 places, 114 transitions, 846 flow [2024-06-14 12:02:53,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=846, PETRI_PLACES=187, PETRI_TRANSITIONS=114} [2024-06-14 12:02:53,248 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-14 12:02:53,248 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 114 transitions, 846 flow [2024-06-14 12:02:53,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:53,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:53,248 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 12:02:53,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 12:02:53,248 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:53,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash -785581922, now seen corresponding path program 13 times [2024-06-14 12:02:53,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:53,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303878267] [2024-06-14 12:02:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:53,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:54,366 INFO 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 12:02:54,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:54,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303878267] [2024-06-14 12:02:54,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303878267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:54,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:54,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:02:54,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269808558] [2024-06-14 12:02:54,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:54,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:02:54,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:54,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:02:54,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:02:54,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:54,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 114 transitions, 846 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:54,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:54,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:54,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:54,734 INFO L124 PetriNetUnfolderBase]: 312/687 cut-off events. [2024-06-14 12:02:54,735 INFO L125 PetriNetUnfolderBase]: For 46932/46932 co-relation queries the response was YES. [2024-06-14 12:02:54,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4144 conditions, 687 events. 312/687 cut-off events. For 46932/46932 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3704 event pairs, 104 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 4070. Up to 457 conditions per place. [2024-06-14 12:02:54,740 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 100 selfloop transitions, 21 changer transitions 7/131 dead transitions. [2024-06-14 12:02:54,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 131 transitions, 1286 flow [2024-06-14 12:02:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:02:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:02:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:02:54,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:02:54,744 INFO L175 Difference]: Start difference. First operand has 187 places, 114 transitions, 846 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:02:54,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 131 transitions, 1286 flow [2024-06-14 12:02:54,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 131 transitions, 1220 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:02:54,836 INFO L231 Difference]: Finished difference. Result has 184 places, 111 transitions, 810 flow [2024-06-14 12:02:54,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=810, PETRI_PLACES=184, PETRI_TRANSITIONS=111} [2024-06-14 12:02:54,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-14 12:02:54,838 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 111 transitions, 810 flow [2024-06-14 12:02:54,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:54,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:54,839 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 12:02:54,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 12:02:54,841 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:54,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:54,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1664511342, now seen corresponding path program 14 times [2024-06-14 12:02:54,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:54,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930711549] [2024-06-14 12:02:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:54,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:56,270 INFO 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 12:02:56,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:56,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930711549] [2024-06-14 12:02:56,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930711549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:56,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:56,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:56,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824934062] [2024-06-14 12:02:56,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:56,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:56,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:56,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:56,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:56,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:56,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 111 transitions, 810 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:56,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:56,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:56,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:56,736 INFO L124 PetriNetUnfolderBase]: 302/665 cut-off events. [2024-06-14 12:02:56,737 INFO L125 PetriNetUnfolderBase]: For 47843/47843 co-relation queries the response was YES. [2024-06-14 12:02:56,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3925 conditions, 665 events. 302/665 cut-off events. For 47843/47843 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3549 event pairs, 107 based on Foata normal form. 8/673 useless extension candidates. Maximal degree in co-relation 3852. Up to 537 conditions per place. [2024-06-14 12:02:56,742 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 21 changer transitions 7/125 dead transitions. [2024-06-14 12:02:56,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 125 transitions, 1114 flow [2024-06-14 12:02:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:02:56,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-14 12:02:56,743 INFO L175 Difference]: Start difference. First operand has 184 places, 111 transitions, 810 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:02:56,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 125 transitions, 1114 flow [2024-06-14 12:02:56,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 125 transitions, 1070 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:02:56,829 INFO L231 Difference]: Finished difference. Result has 182 places, 108 transitions, 795 flow [2024-06-14 12:02:56,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=795, PETRI_PLACES=182, PETRI_TRANSITIONS=108} [2024-06-14 12:02:56,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-14 12:02:56,830 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 108 transitions, 795 flow [2024-06-14 12:02:56,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:56,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:56,831 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 12:02:56,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 12:02:56,831 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:56,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:56,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1454566660, now seen corresponding path program 15 times [2024-06-14 12:02:56,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:56,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749717648] [2024-06-14 12:02:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:56,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:58,643 INFO 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 12:02:58,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:58,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749717648] [2024-06-14 12:02:58,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749717648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:58,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:58,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:58,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174972613] [2024-06-14 12:02:58,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:58,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:58,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:58,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:58,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:58,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:02:58,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 108 transitions, 795 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:58,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:58,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:02:58,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:59,205 INFO L124 PetriNetUnfolderBase]: 275/611 cut-off events. [2024-06-14 12:02:59,206 INFO L125 PetriNetUnfolderBase]: For 36801/36801 co-relation queries the response was YES. [2024-06-14 12:02:59,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 611 events. 275/611 cut-off events. For 36801/36801 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3183 event pairs, 120 based on Foata normal form. 8/619 useless extension candidates. Maximal degree in co-relation 3241. Up to 510 conditions per place. [2024-06-14 12:02:59,210 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 98 selfloop transitions, 14 changer transitions 7/122 dead transitions. [2024-06-14 12:02:59,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 122 transitions, 1093 flow [2024-06-14 12:02:59,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:02:59,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-14 12:02:59,212 INFO L175 Difference]: Start difference. First operand has 182 places, 108 transitions, 795 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:02:59,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 122 transitions, 1093 flow [2024-06-14 12:02:59,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 122 transitions, 1045 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:02:59,283 INFO L231 Difference]: Finished difference. Result has 180 places, 105 transitions, 762 flow [2024-06-14 12:02:59,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=762, PETRI_PLACES=180, PETRI_TRANSITIONS=105} [2024-06-14 12:02:59,288 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-14 12:02:59,289 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 105 transitions, 762 flow [2024-06-14 12:02:59,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:59,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:59,289 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 12:02:59,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 12:02:59,289 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:59,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:59,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1291223824, now seen corresponding path program 16 times [2024-06-14 12:02:59,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:59,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708436913] [2024-06-14 12:02:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:59,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:00,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:00,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708436913] [2024-06-14 12:03:00,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708436913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:00,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:00,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:00,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070168886] [2024-06-14 12:03:00,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:00,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:00,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:00,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:00,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:00,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:00,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 105 transitions, 762 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:00,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:00,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:00,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:01,169 INFO L124 PetriNetUnfolderBase]: 266/596 cut-off events. [2024-06-14 12:03:01,169 INFO L125 PetriNetUnfolderBase]: For 33173/33173 co-relation queries the response was YES. [2024-06-14 12:03:01,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 596 events. 266/596 cut-off events. For 33173/33173 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3081 event pairs, 112 based on Foata normal form. 6/602 useless extension candidates. Maximal degree in co-relation 3138. Up to 498 conditions per place. [2024-06-14 12:03:01,173 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 11 changer transitions 13/121 dead transitions. [2024-06-14 12:03:01,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 121 transitions, 1054 flow [2024-06-14 12:03:01,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-14 12:03:01,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-14 12:03:01,175 INFO L175 Difference]: Start difference. First operand has 180 places, 105 transitions, 762 flow. Second operand 12 states and 133 transitions. [2024-06-14 12:03:01,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 121 transitions, 1054 flow [2024-06-14 12:03:01,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 121 transitions, 1020 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:03:01,249 INFO L231 Difference]: Finished difference. Result has 178 places, 101 transitions, 732 flow [2024-06-14 12:03:01,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=732, PETRI_PLACES=178, PETRI_TRANSITIONS=101} [2024-06-14 12:03:01,264 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-14 12:03:01,264 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 101 transitions, 732 flow [2024-06-14 12:03:01,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:01,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:01,265 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 12:03:01,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 12:03:01,265 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:01,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:01,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1627928286, now seen corresponding path program 17 times [2024-06-14 12:03:01,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:01,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264234342] [2024-06-14 12:03:01,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:01,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:04,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:04,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264234342] [2024-06-14 12:03:04,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264234342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:04,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:04,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:04,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689163356] [2024-06-14 12:03:04,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:04,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:04,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:04,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:04,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:04,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:04,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 101 transitions, 732 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:04,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:04,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:04,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:04,877 INFO L124 PetriNetUnfolderBase]: 259/582 cut-off events. [2024-06-14 12:03:04,877 INFO L125 PetriNetUnfolderBase]: For 34390/34390 co-relation queries the response was YES. [2024-06-14 12:03:04,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3138 conditions, 582 events. 259/582 cut-off events. For 34390/34390 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3003 event pairs, 95 based on Foata normal form. 8/590 useless extension candidates. Maximal degree in co-relation 3069. Up to 405 conditions per place. [2024-06-14 12:03:04,881 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 33 changer transitions 7/115 dead transitions. [2024-06-14 12:03:04,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 115 transitions, 1016 flow [2024-06-14 12:03:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:03:04,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:03:04,882 INFO L175 Difference]: Start difference. First operand has 178 places, 101 transitions, 732 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:03:04,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 115 transitions, 1016 flow [2024-06-14 12:03:04,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 115 transitions, 988 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:03:04,947 INFO L231 Difference]: Finished difference. Result has 172 places, 98 transitions, 758 flow [2024-06-14 12:03:04,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=758, PETRI_PLACES=172, PETRI_TRANSITIONS=98} [2024-06-14 12:03:04,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-14 12:03:04,948 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 98 transitions, 758 flow [2024-06-14 12:03:04,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:04,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:04,948 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 12:03:04,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 12:03:04,948 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:04,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:04,949 INFO L85 PathProgramCache]: Analyzing trace with hash -815908868, now seen corresponding path program 18 times [2024-06-14 12:03:04,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:04,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224262441] [2024-06-14 12:03:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:04,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:06,101 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 12:03:06,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:06,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224262441] [2024-06-14 12:03:06,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224262441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:06,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:06,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:03:06,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280070542] [2024-06-14 12:03:06,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:06,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:03:06,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:06,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:03:06,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:03:06,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:06,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 98 transitions, 758 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:06,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:06,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:06,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:06,501 INFO L124 PetriNetUnfolderBase]: 265/602 cut-off events. [2024-06-14 12:03:06,502 INFO L125 PetriNetUnfolderBase]: For 34477/34477 co-relation queries the response was YES. [2024-06-14 12:03:06,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 602 events. 265/602 cut-off events. For 34477/34477 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3154 event pairs, 102 based on Foata normal form. 6/608 useless extension candidates. Maximal degree in co-relation 3360. Up to 358 conditions per place. [2024-06-14 12:03:06,506 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 30 changer transitions 7/114 dead transitions. [2024-06-14 12:03:06,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 114 transitions, 1130 flow [2024-06-14 12:03:06,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:03:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:03:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:03:06,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 12:03:06,507 INFO L175 Difference]: Start difference. First operand has 172 places, 98 transitions, 758 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:03:06,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 114 transitions, 1130 flow [2024-06-14 12:03:06,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 114 transitions, 1046 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 12:03:06,568 INFO L231 Difference]: Finished difference. Result has 169 places, 95 transitions, 730 flow [2024-06-14 12:03:06,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=730, PETRI_PLACES=169, PETRI_TRANSITIONS=95} [2024-06-14 12:03:06,568 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-14 12:03:06,569 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 95 transitions, 730 flow [2024-06-14 12:03:06,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:06,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:06,569 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 12:03:06,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 12:03:06,569 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:06,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:06,570 INFO L85 PathProgramCache]: Analyzing trace with hash -816147878, now seen corresponding path program 19 times [2024-06-14 12:03:06,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:06,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660993940] [2024-06-14 12:03:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:06,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:08,099 INFO 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 12:03:08,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:08,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660993940] [2024-06-14 12:03:08,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660993940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:08,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:08,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:08,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157240080] [2024-06-14 12:03:08,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:08,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:08,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:08,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:08,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:08,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 95 transitions, 730 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:08,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:08,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:08,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:08,586 INFO L124 PetriNetUnfolderBase]: 255/580 cut-off events. [2024-06-14 12:03:08,587 INFO L125 PetriNetUnfolderBase]: For 33557/33557 co-relation queries the response was YES. [2024-06-14 12:03:08,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 580 events. 255/580 cut-off events. For 33557/33557 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2983 event pairs, 105 based on Foata normal form. 8/588 useless extension candidates. Maximal degree in co-relation 3094. Up to 411 conditions per place. [2024-06-14 12:03:08,590 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 29 changer transitions 9/108 dead transitions. [2024-06-14 12:03:08,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 108 transitions, 974 flow [2024-06-14 12:03:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:08,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:03:08,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-14 12:03:08,592 INFO L175 Difference]: Start difference. First operand has 169 places, 95 transitions, 730 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:03:08,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 108 transitions, 974 flow [2024-06-14 12:03:08,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 108 transitions, 899 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:03:08,646 INFO L231 Difference]: Finished difference. Result has 167 places, 91 transitions, 682 flow [2024-06-14 12:03:08,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=682, PETRI_PLACES=167, PETRI_TRANSITIONS=91} [2024-06-14 12:03:08,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-14 12:03:08,646 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 91 transitions, 682 flow [2024-06-14 12:03:08,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:08,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:08,647 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 12:03:08,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 12:03:08,647 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:08,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:08,647 INFO L85 PathProgramCache]: Analyzing trace with hash 177958768, now seen corresponding path program 1 times [2024-06-14 12:03:08,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:08,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45972162] [2024-06-14 12:03:08,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:08,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:10,383 INFO 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 12:03:10,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45972162] [2024-06-14 12:03:10,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45972162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:10,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:10,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:10,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004610898] [2024-06-14 12:03:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:10,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:10,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:10,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 91 transitions, 682 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:10,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:10,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:10,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:10,853 INFO L124 PetriNetUnfolderBase]: 246/565 cut-off events. [2024-06-14 12:03:10,853 INFO L125 PetriNetUnfolderBase]: For 30055/30055 co-relation queries the response was YES. [2024-06-14 12:03:10,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3041 conditions, 565 events. 246/565 cut-off events. For 30055/30055 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2876 event pairs, 81 based on Foata normal form. 6/571 useless extension candidates. Maximal degree in co-relation 2976. Up to 450 conditions per place. [2024-06-14 12:03:10,857 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 76 selfloop transitions, 11 changer transitions 21/111 dead transitions. [2024-06-14 12:03:10,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 111 transitions, 950 flow [2024-06-14 12:03:10,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 12:03:10,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-14 12:03:10,859 INFO L175 Difference]: Start difference. First operand has 167 places, 91 transitions, 682 flow. Second operand 12 states and 135 transitions. [2024-06-14 12:03:10,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 111 transitions, 950 flow [2024-06-14 12:03:10,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 111 transitions, 865 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:03:10,912 INFO L231 Difference]: Finished difference. Result has 165 places, 84 transitions, 581 flow [2024-06-14 12:03:10,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=581, PETRI_PLACES=165, PETRI_TRANSITIONS=84} [2024-06-14 12:03:10,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-14 12:03:10,913 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 84 transitions, 581 flow [2024-06-14 12:03:10,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:10,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:10,913 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 12:03:10,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 12:03:10,914 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:10,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1573013936, now seen corresponding path program 2 times [2024-06-14 12:03:10,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:10,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799893574] [2024-06-14 12:03:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:10,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:12,961 INFO 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 12:03:12,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:12,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799893574] [2024-06-14 12:03:12,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799893574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:12,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:12,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:12,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812836206] [2024-06-14 12:03:12,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:12,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:12,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:12,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:12,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:13,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:13,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 84 transitions, 581 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:13,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:13,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:13,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:13,439 INFO L124 PetriNetUnfolderBase]: 230/527 cut-off events. [2024-06-14 12:03:13,439 INFO L125 PetriNetUnfolderBase]: For 28903/28903 co-relation queries the response was YES. [2024-06-14 12:03:13,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2758 conditions, 527 events. 230/527 cut-off events. For 28903/28903 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2618 event pairs, 77 based on Foata normal form. 6/533 useless extension candidates. Maximal degree in co-relation 2695. Up to 421 conditions per place. [2024-06-14 12:03:13,442 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 9 changer transitions 19/103 dead transitions. [2024-06-14 12:03:13,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 103 transitions, 827 flow [2024-06-14 12:03:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:13,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 12:03:13,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-14 12:03:13,443 INFO L175 Difference]: Start difference. First operand has 165 places, 84 transitions, 581 flow. Second operand 12 states and 134 transitions. [2024-06-14 12:03:13,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 103 transitions, 827 flow [2024-06-14 12:03:13,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 103 transitions, 785 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:03:13,486 INFO L231 Difference]: Finished difference. Result has 154 places, 78 transitions, 522 flow [2024-06-14 12:03:13,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=522, PETRI_PLACES=154, PETRI_TRANSITIONS=78} [2024-06-14 12:03:13,508 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-14 12:03:13,508 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 78 transitions, 522 flow [2024-06-14 12:03:13,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:13,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:13,509 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 12:03:13,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 12:03:13,509 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:13,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:13,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1107912404, now seen corresponding path program 3 times [2024-06-14 12:03:13,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:13,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065915908] [2024-06-14 12:03:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:13,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:15,222 INFO 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 12:03:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:15,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065915908] [2024-06-14 12:03:15,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065915908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:15,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:15,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317532081] [2024-06-14 12:03:15,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:15,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:15,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:15,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 78 transitions, 522 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:15,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:15,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:15,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:15,712 INFO L124 PetriNetUnfolderBase]: 213/490 cut-off events. [2024-06-14 12:03:15,713 INFO L125 PetriNetUnfolderBase]: For 27443/27443 co-relation queries the response was YES. [2024-06-14 12:03:15,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 490 events. 213/490 cut-off events. For 27443/27443 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2383 event pairs, 77 based on Foata normal form. 6/496 useless extension candidates. Maximal degree in co-relation 2523. Up to 396 conditions per place. [2024-06-14 12:03:15,716 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 11 changer transitions 12/94 dead transitions. [2024-06-14 12:03:15,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 94 transitions, 742 flow [2024-06-14 12:03:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:03:15,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:03:15,717 INFO L175 Difference]: Start difference. First operand has 154 places, 78 transitions, 522 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:03:15,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 94 transitions, 742 flow [2024-06-14 12:03:15,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 94 transitions, 716 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:03:15,757 INFO L231 Difference]: Finished difference. Result has 146 places, 74 transitions, 486 flow [2024-06-14 12:03:15,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=486, PETRI_PLACES=146, PETRI_TRANSITIONS=74} [2024-06-14 12:03:15,757 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-14 12:03:15,757 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 74 transitions, 486 flow [2024-06-14 12:03:15,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:15,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:15,758 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 12:03:15,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 12:03:15,758 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:15,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:15,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1307358344, now seen corresponding path program 4 times [2024-06-14 12:03:15,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:15,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897942430] [2024-06-14 12:03:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:15,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:17,915 INFO 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 12:03:17,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897942430] [2024-06-14 12:03:17,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897942430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:17,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:17,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:17,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568714098] [2024-06-14 12:03:17,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:17,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:17,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:17,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:17,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:18,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:18,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 74 transitions, 486 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:18,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:18,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:18,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:18,414 INFO L124 PetriNetUnfolderBase]: 205/472 cut-off events. [2024-06-14 12:03:18,414 INFO L125 PetriNetUnfolderBase]: For 26041/26041 co-relation queries the response was YES. [2024-06-14 12:03:18,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2478 conditions, 472 events. 205/472 cut-off events. For 26041/26041 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2271 event pairs, 75 based on Foata normal form. 6/478 useless extension candidates. Maximal degree in co-relation 2421. Up to 378 conditions per place. [2024-06-14 12:03:18,417 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 60 selfloop transitions, 6 changer transitions 22/91 dead transitions. [2024-06-14 12:03:18,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 91 transitions, 702 flow [2024-06-14 12:03:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-14 12:03:18,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-14 12:03:18,418 INFO L175 Difference]: Start difference. First operand has 146 places, 74 transitions, 486 flow. Second operand 12 states and 131 transitions. [2024-06-14 12:03:18,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 91 transitions, 702 flow [2024-06-14 12:03:18,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 91 transitions, 667 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:03:18,454 INFO L231 Difference]: Finished difference. Result has 141 places, 66 transitions, 401 flow [2024-06-14 12:03:18,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=401, PETRI_PLACES=141, PETRI_TRANSITIONS=66} [2024-06-14 12:03:18,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-14 12:03:18,454 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 66 transitions, 401 flow [2024-06-14 12:03:18,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:18,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:18,455 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 12:03:18,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 12:03:18,455 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:18,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:18,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1471331308, now seen corresponding path program 5 times [2024-06-14 12:03:18,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:18,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036751319] [2024-06-14 12:03:18,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:18,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:20,219 INFO 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 12:03:20,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:20,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036751319] [2024-06-14 12:03:20,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036751319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:20,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:20,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:20,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407705031] [2024-06-14 12:03:20,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:20,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:20,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:20,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:20,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:20,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:20,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 66 transitions, 401 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:20,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:20,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:20,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:20,663 INFO L124 PetriNetUnfolderBase]: 191/436 cut-off events. [2024-06-14 12:03:20,664 INFO L125 PetriNetUnfolderBase]: For 25923/25923 co-relation queries the response was YES. [2024-06-14 12:03:20,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2324 conditions, 436 events. 191/436 cut-off events. For 25923/25923 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2055 event pairs, 71 based on Foata normal form. 6/442 useless extension candidates. Maximal degree in co-relation 2269. Up to 349 conditions per place. [2024-06-14 12:03:20,666 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 55 selfloop transitions, 5 changer transitions 19/82 dead transitions. [2024-06-14 12:03:20,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 82 transitions, 597 flow [2024-06-14 12:03:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:20,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 12:03:20,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:03:20,667 INFO L175 Difference]: Start difference. First operand has 141 places, 66 transitions, 401 flow. Second operand 11 states and 121 transitions. [2024-06-14 12:03:20,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 82 transitions, 597 flow [2024-06-14 12:03:20,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 82 transitions, 559 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-14 12:03:20,698 INFO L231 Difference]: Finished difference. Result has 125 places, 60 transitions, 349 flow [2024-06-14 12:03:20,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=349, PETRI_PLACES=125, PETRI_TRANSITIONS=60} [2024-06-14 12:03:20,699 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-14 12:03:20,699 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 60 transitions, 349 flow [2024-06-14 12:03:20,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:20,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:20,699 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 12:03:20,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 12:03:20,700 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:20,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1041815120, now seen corresponding path program 6 times [2024-06-14 12:03:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680168551] [2024-06-14 12:03:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:22,188 INFO 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 12:03:22,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:22,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680168551] [2024-06-14 12:03:22,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680168551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:22,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:22,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:22,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82501553] [2024-06-14 12:03:22,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:22,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:22,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:22,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:22,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:22,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 60 transitions, 349 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:22,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:22,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:22,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:22,638 INFO L124 PetriNetUnfolderBase]: 159/366 cut-off events. [2024-06-14 12:03:22,639 INFO L125 PetriNetUnfolderBase]: For 21571/21571 co-relation queries the response was YES. [2024-06-14 12:03:22,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 366 events. 159/366 cut-off events. For 21571/21571 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1632 event pairs, 58 based on Foata normal form. 6/372 useless extension candidates. Maximal degree in co-relation 1844. Up to 291 conditions per place. [2024-06-14 12:03:22,641 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 7 changer transitions 12/73 dead transitions. [2024-06-14 12:03:22,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 73 transitions, 519 flow [2024-06-14 12:03:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 12:03:22,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-14 12:03:22,643 INFO L175 Difference]: Start difference. First operand has 125 places, 60 transitions, 349 flow. Second operand 11 states and 119 transitions. [2024-06-14 12:03:22,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 73 transitions, 519 flow [2024-06-14 12:03:22,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 73 transitions, 499 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:03:22,661 INFO L231 Difference]: Finished difference. Result has 116 places, 56 transitions, 325 flow [2024-06-14 12:03:22,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=325, PETRI_PLACES=116, PETRI_TRANSITIONS=56} [2024-06-14 12:03:22,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-14 12:03:22,662 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 56 transitions, 325 flow [2024-06-14 12:03:22,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:22,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:22,662 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 12:03:22,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 12:03:22,663 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:22,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1650205078, now seen corresponding path program 7 times [2024-06-14 12:03:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:22,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949416510] [2024-06-14 12:03:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:22,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:24,099 INFO 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 12:03:24,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:24,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949416510] [2024-06-14 12:03:24,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949416510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:24,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:24,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:24,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232115217] [2024-06-14 12:03:24,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:24,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:24,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:24,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:24,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:24,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:24,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 56 transitions, 325 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:24,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:24,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:24,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:24,518 INFO L124 PetriNetUnfolderBase]: 151/348 cut-off events. [2024-06-14 12:03:24,518 INFO L125 PetriNetUnfolderBase]: For 17269/17269 co-relation queries the response was YES. [2024-06-14 12:03:24,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 348 events. 151/348 cut-off events. For 17269/17269 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1524 event pairs, 56 based on Foata normal form. 6/354 useless extension candidates. Maximal degree in co-relation 1702. Up to 273 conditions per place. [2024-06-14 12:03:24,520 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 44 selfloop transitions, 3 changer transitions 20/70 dead transitions. [2024-06-14 12:03:24,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 70 transitions, 491 flow [2024-06-14 12:03:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 12:03:24,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-14 12:03:24,521 INFO L175 Difference]: Start difference. First operand has 116 places, 56 transitions, 325 flow. Second operand 11 states and 118 transitions. [2024-06-14 12:03:24,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 70 transitions, 491 flow [2024-06-14 12:03:24,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 70 transitions, 469 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:03:24,534 INFO L231 Difference]: Finished difference. Result has 109 places, 49 transitions, 277 flow [2024-06-14 12:03:24,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=277, PETRI_PLACES=109, PETRI_TRANSITIONS=49} [2024-06-14 12:03:24,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-14 12:03:24,535 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 49 transitions, 277 flow [2024-06-14 12:03:24,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:24,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:24,535 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 12:03:24,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 12:03:24,535 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:24,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:24,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1628818254, now seen corresponding path program 8 times [2024-06-14 12:03:24,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:24,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20267809] [2024-06-14 12:03:24,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:24,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:26,394 INFO 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 12:03:26,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:26,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20267809] [2024-06-14 12:03:26,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20267809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:26,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:26,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:26,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267724813] [2024-06-14 12:03:26,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:26,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:26,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:26,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:26,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:26,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:26,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 49 transitions, 277 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:26,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:26,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:26,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:26,798 INFO L124 PetriNetUnfolderBase]: 121/281 cut-off events. [2024-06-14 12:03:26,798 INFO L125 PetriNetUnfolderBase]: For 11474/11474 co-relation queries the response was YES. [2024-06-14 12:03:26,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 281 events. 121/281 cut-off events. For 11474/11474 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1149 event pairs, 43 based on Foata normal form. 6/287 useless extension candidates. Maximal degree in co-relation 1269. Up to 215 conditions per place. [2024-06-14 12:03:26,800 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 38 selfloop transitions, 6 changer transitions 14/61 dead transitions. [2024-06-14 12:03:26,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 61 transitions, 419 flow [2024-06-14 12:03:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:03:26,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-14 12:03:26,801 INFO L175 Difference]: Start difference. First operand has 109 places, 49 transitions, 277 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:03:26,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 61 transitions, 419 flow [2024-06-14 12:03:26,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 61 transitions, 397 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 12:03:26,809 INFO L231 Difference]: Finished difference. Result has 96 places, 44 transitions, 240 flow [2024-06-14 12:03:26,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=240, PETRI_PLACES=96, PETRI_TRANSITIONS=44} [2024-06-14 12:03:26,810 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-14 12:03:26,810 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 44 transitions, 240 flow [2024-06-14 12:03:26,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:26,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:26,810 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 12:03:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 12:03:26,810 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:26,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash 60029834, now seen corresponding path program 9 times [2024-06-14 12:03:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:26,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854126978] [2024-06-14 12:03:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:26,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:28,354 INFO 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 12:03:28,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:28,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854126978] [2024-06-14 12:03:28,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854126978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:28,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:28,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:28,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390124521] [2024-06-14 12:03:28,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:28,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:28,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:28,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:28,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:28,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 44 transitions, 240 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:28,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:28,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:28,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:28,730 INFO L124 PetriNetUnfolderBase]: 97/227 cut-off events. [2024-06-14 12:03:28,730 INFO L125 PetriNetUnfolderBase]: For 5606/5606 co-relation queries the response was YES. [2024-06-14 12:03:28,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 227 events. 97/227 cut-off events. For 5606/5606 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 843 event pairs, 30 based on Foata normal form. 6/233 useless extension candidates. Maximal degree in co-relation 880. Up to 160 conditions per place. [2024-06-14 12:03:28,731 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 34 selfloop transitions, 7 changer transitions 12/56 dead transitions. [2024-06-14 12:03:28,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 56 transitions, 372 flow [2024-06-14 12:03:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:28,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 12:03:28,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-14 12:03:28,733 INFO L175 Difference]: Start difference. First operand has 96 places, 44 transitions, 240 flow. Second operand 11 states and 117 transitions. [2024-06-14 12:03:28,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 56 transitions, 372 flow [2024-06-14 12:03:28,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 56 transitions, 346 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:03:28,738 INFO L231 Difference]: Finished difference. Result has 88 places, 40 transitions, 211 flow [2024-06-14 12:03:28,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=211, PETRI_PLACES=88, PETRI_TRANSITIONS=40} [2024-06-14 12:03:28,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-14 12:03:28,742 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 40 transitions, 211 flow [2024-06-14 12:03:28,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:28,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:28,743 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 12:03:28,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 12:03:28,743 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:28,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1209694728, now seen corresponding path program 10 times [2024-06-14 12:03:28,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:28,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294388387] [2024-06-14 12:03:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:28,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:30,390 INFO 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 12:03:30,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:30,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294388387] [2024-06-14 12:03:30,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294388387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:30,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:30,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979541637] [2024-06-14 12:03:30,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:30,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:30,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:30,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:30,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:30,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:30,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 40 transitions, 211 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:30,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:30,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:30,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:30,670 INFO L124 PetriNetUnfolderBase]: 89/209 cut-off events. [2024-06-14 12:03:30,670 INFO L125 PetriNetUnfolderBase]: For 5160/5160 co-relation queries the response was YES. [2024-06-14 12:03:30,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 209 events. 89/209 cut-off events. For 5160/5160 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 741 event pairs, 28 based on Foata normal form. 6/215 useless extension candidates. Maximal degree in co-relation 812. Up to 142 conditions per place. [2024-06-14 12:03:30,671 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 29 selfloop transitions, 4 changer transitions 17/53 dead transitions. [2024-06-14 12:03:30,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 53 transitions, 339 flow [2024-06-14 12:03:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:30,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:03:30,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-14 12:03:30,672 INFO L175 Difference]: Start difference. First operand has 88 places, 40 transitions, 211 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:03:30,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 53 transitions, 339 flow [2024-06-14 12:03:30,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 53 transitions, 317 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:03:30,678 INFO L231 Difference]: Finished difference. Result has 81 places, 34 transitions, 172 flow [2024-06-14 12:03:30,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=172, PETRI_PLACES=81, PETRI_TRANSITIONS=34} [2024-06-14 12:03:30,678 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-14 12:03:30,678 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 34 transitions, 172 flow [2024-06-14 12:03:30,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:30,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:30,679 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 12:03:30,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 12:03:30,679 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:30,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2142107716, now seen corresponding path program 11 times [2024-06-14 12:03:30,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:30,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594153757] [2024-06-14 12:03:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:30,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:32,305 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 12:03:32,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:32,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594153757] [2024-06-14 12:03:32,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594153757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:32,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:32,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:32,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436720327] [2024-06-14 12:03:32,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:32,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:32,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:32,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:32,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:32,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:32,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 34 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:32,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:32,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:32,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:32,557 INFO L124 PetriNetUnfolderBase]: 76/180 cut-off events. [2024-06-14 12:03:32,558 INFO L125 PetriNetUnfolderBase]: For 3942/3946 co-relation queries the response was YES. [2024-06-14 12:03:32,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 180 events. 76/180 cut-off events. For 3942/3946 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 598 event pairs, 28 based on Foata normal form. 6/186 useless extension candidates. Maximal degree in co-relation 694. Up to 120 conditions per place. [2024-06-14 12:03:32,559 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 24 selfloop transitions, 5 changer transitions 14/46 dead transitions. [2024-06-14 12:03:32,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 46 transitions, 284 flow [2024-06-14 12:03:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 12:03:32,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-14 12:03:32,560 INFO L175 Difference]: Start difference. First operand has 81 places, 34 transitions, 172 flow. Second operand 11 states and 114 transitions. [2024-06-14 12:03:32,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 46 transitions, 284 flow [2024-06-14 12:03:32,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 46 transitions, 264 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:03:32,563 INFO L231 Difference]: Finished difference. Result has 71 places, 29 transitions, 143 flow [2024-06-14 12:03:32,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=143, PETRI_PLACES=71, PETRI_TRANSITIONS=29} [2024-06-14 12:03:32,563 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-14 12:03:32,563 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 29 transitions, 143 flow [2024-06-14 12:03:32,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:32,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:32,564 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 12:03:32,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 12:03:32,564 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:32,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:32,574 INFO L85 PathProgramCache]: Analyzing trace with hash 275065932, now seen corresponding path program 12 times [2024-06-14 12:03:32,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:32,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153666485] [2024-06-14 12:03:32,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:32,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:34,100 INFO 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 12:03:34,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:34,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153666485] [2024-06-14 12:03:34,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153666485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:34,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:34,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:34,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771600760] [2024-06-14 12:03:34,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:34,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:34,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:34,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:34,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:34,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:34,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 29 transitions, 143 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:34,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:34,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:34,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:34,581 INFO L124 PetriNetUnfolderBase]: 67/159 cut-off events. [2024-06-14 12:03:34,581 INFO L125 PetriNetUnfolderBase]: For 2284/2288 co-relation queries the response was YES. [2024-06-14 12:03:34,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 159 events. 67/159 cut-off events. For 2284/2288 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 490 event pairs, 28 based on Foata normal form. 10/169 useless extension candidates. Maximal degree in co-relation 582. Up to 95 conditions per place. [2024-06-14 12:03:34,582 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 19 selfloop transitions, 9 changer transitions 10/41 dead transitions. [2024-06-14 12:03:34,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 41 transitions, 245 flow [2024-06-14 12:03:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 12:03:34,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-14 12:03:34,583 INFO L175 Difference]: Start difference. First operand has 71 places, 29 transitions, 143 flow. Second operand 11 states and 113 transitions. [2024-06-14 12:03:34,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 41 transitions, 245 flow [2024-06-14 12:03:34,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 41 transitions, 227 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:03:34,585 INFO L231 Difference]: Finished difference. Result has 64 places, 26 transitions, 131 flow [2024-06-14 12:03:34,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=131, PETRI_PLACES=64, PETRI_TRANSITIONS=26} [2024-06-14 12:03:34,585 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-14 12:03:34,585 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 26 transitions, 131 flow [2024-06-14 12:03:34,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:34,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:34,586 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 12:03:34,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 12:03:34,586 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:34,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:34,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1079551432, now seen corresponding path program 13 times [2024-06-14 12:03:34,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:34,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549756044] [2024-06-14 12:03:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:34,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:36,542 INFO 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 12:03:36,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:36,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549756044] [2024-06-14 12:03:36,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549756044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:36,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:36,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:36,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573678032] [2024-06-14 12:03:36,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:36,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:36,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:36,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:36,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 26 transitions, 131 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:36,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:36,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:36,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:36,865 INFO L124 PetriNetUnfolderBase]: 45/113 cut-off events. [2024-06-14 12:03:36,866 INFO L125 PetriNetUnfolderBase]: For 1024/1024 co-relation queries the response was YES. [2024-06-14 12:03:36,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 113 events. 45/113 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 277 event pairs, 4 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 366. Up to 38 conditions per place. [2024-06-14 12:03:36,866 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 8 changer transitions 10/39 dead transitions. [2024-06-14 12:03:36,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 39 transitions, 231 flow [2024-06-14 12:03:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:36,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 12:03:36,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-14 12:03:36,867 INFO L175 Difference]: Start difference. First operand has 64 places, 26 transitions, 131 flow. Second operand 11 states and 112 transitions. [2024-06-14 12:03:36,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 39 transitions, 231 flow [2024-06-14 12:03:36,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 39 transitions, 207 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:03:36,869 INFO L231 Difference]: Finished difference. Result has 60 places, 22 transitions, 107 flow [2024-06-14 12:03:36,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=107, PETRI_PLACES=60, PETRI_TRANSITIONS=22} [2024-06-14 12:03:36,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-14 12:03:36,870 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 22 transitions, 107 flow [2024-06-14 12:03:36,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:36,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:36,870 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 12:03:36,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 12:03:36,870 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:36,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash -78319982, now seen corresponding path program 14 times [2024-06-14 12:03:36,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:36,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891008946] [2024-06-14 12:03:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:36,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:38,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891008946] [2024-06-14 12:03:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891008946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:38,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:38,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:38,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997913675] [2024-06-14 12:03:38,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:38,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:38,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:38,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:38,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:38,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:03:38,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 22 transitions, 107 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:38,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:38,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:03:38,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:38,447 INFO L124 PetriNetUnfolderBase]: 19/57 cut-off events. [2024-06-14 12:03:38,447 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2024-06-14 12:03:38,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 57 events. 19/57 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 6/63 useless extension candidates. Maximal degree in co-relation 156. Up to 24 conditions per place. [2024-06-14 12:03:38,448 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-14 12:03:38,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 29 transitions, 151 flow [2024-06-14 12:03:38,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-14 12:03:38,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-14 12:03:38,448 INFO L175 Difference]: Start difference. First operand has 60 places, 22 transitions, 107 flow. Second operand 11 states and 104 transitions. [2024-06-14 12:03:38,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 29 transitions, 151 flow [2024-06-14 12:03:38,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 29 transitions, 117 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-14 12:03:38,449 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2024-06-14 12:03:38,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=38, 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=48, PETRI_TRANSITIONS=0} [2024-06-14 12:03:38,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-06-14 12:03:38,449 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2024-06-14 12:03:38,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:38,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:03:38,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:03:38,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:03:38,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:03:38,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 12:03:38,453 INFO L445 BasicCegarLoop]: Path program histogram: [33, 20, 19, 14, 12, 12, 7, 6, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:38,455 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:03:38,456 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:03:38,458 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:03:38,459 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:03:38,459 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:03:38 BasicIcfg [2024-06-14 12:03:38,459 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:03:38,460 INFO L158 Benchmark]: Toolchain (without parser) took 248744.92ms. Allocated memory was 155.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 115.4MB in the beginning and 858.3MB in the end (delta: -743.0MB). Peak memory consumption was 635.6MB. Max. memory is 16.1GB. [2024-06-14 12:03:38,460 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:03:38,460 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 120.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:03:38,460 INFO L158 Benchmark]: CACSL2BoogieTranslator took 595.78ms. Allocated memory is still 155.2MB. Free memory was 115.0MB in the beginning and 80.4MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-14 12:03:38,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.10ms. Allocated memory is still 155.2MB. Free memory was 80.4MB in the beginning and 77.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:03:38,461 INFO L158 Benchmark]: Boogie Preprocessor took 55.20ms. Allocated memory is still 155.2MB. Free memory was 77.6MB in the beginning and 74.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:03:38,461 INFO L158 Benchmark]: RCFGBuilder took 646.66ms. Allocated memory is still 155.2MB. Free memory was 73.4MB in the beginning and 83.1MB in the end (delta: -9.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-14 12:03:38,461 INFO L158 Benchmark]: TraceAbstraction took 247399.37ms. Allocated memory was 155.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 82.1MB in the beginning and 858.3MB in the end (delta: -776.2MB). Peak memory consumption was 604.7MB. Max. memory is 16.1GB. [2024-06-14 12:03:38,462 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 120.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 595.78ms. Allocated memory is still 155.2MB. Free memory was 115.0MB in the beginning and 80.4MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.10ms. Allocated memory is still 155.2MB. Free memory was 80.4MB in the beginning and 77.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.20ms. Allocated memory is still 155.2MB. Free memory was 77.6MB in the beginning and 74.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 646.66ms. Allocated memory is still 155.2MB. Free memory was 73.4MB in the beginning and 83.1MB in the end (delta: -9.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 247399.37ms. Allocated memory was 155.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 82.1MB in the beginning and 858.3MB in the end (delta: -776.2MB). Peak memory consumption was 604.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 824]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 825]: 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: 247.3s, OverallIterations: 148, TraceHistogramMax: 1, PathProgramHistogramMax: 33, EmptinessCheckTime: 0.0s, AutomataDifference: 70.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8501 SdHoareTripleChecker+Valid, 36.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7186 mSDsluCounter, 2552 SdHoareTripleChecker+Invalid, 31.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2240 mSDsCounter, 1313 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58938 IncrementalHoareTripleChecker+Invalid, 60251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1313 mSolverCounterUnsat, 312 mSDtfsCounter, 58938 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1575 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1567 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2736 ImplicationChecksByTransitivity, 48.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2007occurred in iteration=78, InterpolantAutomatonStates: 1439, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 174.2s InterpolantComputationTime, 2495 NumberOfCodeBlocks, 2495 NumberOfCodeBlocksAsserted, 148 NumberOfCheckSat, 2347 ConstructedInterpolants, 0 QuantifiedInterpolants, 117175 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 148 InterpolantComputations, 148 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 12:03:38,532 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