./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.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-7724a2d-m [2024-06-28 02:58:00,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:58:00,429 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:58:00,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:58:00,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:58:00,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:58:00,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:58:00,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:58:00,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:58:00,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:58:00,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:58:00,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:58:00,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:58:00,478 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:58:00,478 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:58:00,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:58:00,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:58:00,479 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:58:00,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:58:00,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:58:00,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:58:00,480 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:58:00,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:58:00,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:58:00,481 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:58:00,481 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:58:00,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:58:00,482 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:58:00,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:58:00,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:58:00,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:58:00,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:58:00,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:58:00,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:58:00,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:58:00,485 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:58:00,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:58:00,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:58:00,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:58:00,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:58:00,486 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:58:00,486 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:58:00,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:58:00,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:58:00,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:58:00,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:58:00,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:58:00,759 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:58:00,760 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:58:00,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-28 02:58:01,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:58:02,143 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:58:02,143 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-28 02:58:02,159 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8739a74a/cb03bb556d9b4099ab5728de43d88ecf/FLAG2d7b8f3d2 [2024-06-28 02:58:02,171 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8739a74a/cb03bb556d9b4099ab5728de43d88ecf [2024-06-28 02:58:02,173 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:58:02,174 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:58:02,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-28 02:58:02,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:58:02,310 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:58:02,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:58:02,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:58:02,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:58:02,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:58:02" (1/2) ... [2024-06-28 02:58:02,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c7e7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:58:02, skipping insertion in model container [2024-06-28 02:58:02,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:58:02" (1/2) ... [2024-06-28 02:58:02,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@15e74cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:58:02, skipping insertion in model container [2024-06-28 02:58:02,320 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:58:02" (2/2) ... [2024-06-28 02:58:02,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c7e7be and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:02, skipping insertion in model container [2024-06-28 02:58:02,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:58:02" (2/2) ... [2024-06-28 02:58:02,321 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:58:02,414 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:58:02,415 INFO L97 edCorrectnessWitness]: Location invariant before [L815-L815] (((((((((((((((! multithreaded || y$read_delayed == (_Bool)0) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:58:02,415 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] (((((((((((((((! multithreaded || y$read_delayed == (_Bool)0) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:58:02,416 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:58:02,416 INFO L106 edCorrectnessWitness]: ghost_update [L813-L813] multithreaded = 1; [2024-06-28 02:58:02,462 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:58:02,835 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:58:02,849 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:58:02,983 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:58:03,020 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:58:03,022 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03 WrapperNode [2024-06-28 02:58:03,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:58:03,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:58:03,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:58:03,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:58:03,029 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 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,044 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 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,073 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 114 [2024-06-28 02:58:03,074 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:58:03,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:58:03,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:58:03,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:58:03,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,094 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,118 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]. [2024-06-28 02:58:03,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:58:03,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:58:03,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:58:03,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:58:03,137 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03" (1/1) ... [2024-06-28 02:58:03,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:58:03,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:58:03,162 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) [2024-06-28 02:58:03,173 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 [2024-06-28 02:58:03,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:58:03,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:58:03,203 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:58:03,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:58:03,203 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:58:03,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:58:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:58:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:58:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:58:03,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:58:03,206 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:58:03,322 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:58:03,324 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:58:03,597 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:58:03,597 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:58:03,756 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:58:03,756 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:58:03,759 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:58:03 BoogieIcfgContainer [2024-06-28 02:58:03,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:58:03,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:58:03,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:58:03,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:58:03,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:58:02" (1/4) ... [2024-06-28 02:58:03,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384042e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:58:03, skipping insertion in model container [2024-06-28 02:58:03,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:58:02" (2/4) ... [2024-06-28 02:58:03,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384042e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:58:03, skipping insertion in model container [2024-06-28 02:58:03,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:58:03" (3/4) ... [2024-06-28 02:58:03,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384042e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:58:03, skipping insertion in model container [2024-06-28 02:58:03,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:58:03" (4/4) ... [2024-06-28 02:58:03,773 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-28 02:58:03,789 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:58:03,789 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:58:03,789 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:58:03,834 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:58:03,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 02:58:03,888 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-28 02:58:03,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:58:03,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:58:03,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 02:58:03,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-28 02:58:03,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:58:03,913 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;@6456fd7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:58:03,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:58:03,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:58:03,918 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:58:03,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:58:03,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:03,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:58:03,920 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)] === [2024-06-28 02:58:03,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash 330355608, now seen corresponding path program 1 times [2024-06-28 02:58:03,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:03,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377532985] [2024-06-28 02:58:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:03,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:04,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:04,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377532985] [2024-06-28 02:58:04,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377532985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:04,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:04,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:58:04,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646039497] [2024-06-28 02:58:04,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:58:04,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:04,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:58:04,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:58:04,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-28 02:58:04,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:04,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:04,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-28 02:58:04,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:05,066 INFO L124 PetriNetUnfolderBase]: 131/256 cut-off events. [2024-06-28 02:58:05,066 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 02:58:05,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 256 events. 131/256 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 939 event pairs, 75 based on Foata normal form. 1/251 useless extension candidates. Maximal degree in co-relation 501. Up to 235 conditions per place. [2024-06-28 02:58:05,072 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 20 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-28 02:58:05,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 111 flow [2024-06-28 02:58:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:58:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:58:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-28 02:58:05,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-28 02:58:05,086 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 55 transitions. [2024-06-28 02:58:05,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 111 flow [2024-06-28 02:58:05,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:58:05,090 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-28 02:58:05,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-28 02:58:05,095 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-28 02:58:05,096 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-28 02:58:05,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:05,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:05,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:05,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:58:05,098 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)] === [2024-06-28 02:58:05,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:05,098 INFO L85 PathProgramCache]: Analyzing trace with hash -355808329, now seen corresponding path program 1 times [2024-06-28 02:58:05,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:05,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435919366] [2024-06-28 02:58:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:05,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:05,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:05,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435919366] [2024-06-28 02:58:05,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435919366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:05,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:05,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:58:05,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031855011] [2024-06-28 02:58:05,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:05,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:58:05,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:05,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:58:05,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:58:05,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-28 02:58:05,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:05,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:05,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-28 02:58:05,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:05,888 INFO L124 PetriNetUnfolderBase]: 128/256 cut-off events. [2024-06-28 02:58:05,888 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-06-28 02:58:05,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 256 events. 128/256 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 925 event pairs, 57 based on Foata normal form. 2/256 useless extension candidates. Maximal degree in co-relation 567. Up to 221 conditions per place. [2024-06-28 02:58:05,891 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 24 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-28 02:58:05,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 153 flow [2024-06-28 02:58:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:58:05,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:58:05,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-06-28 02:58:05,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-06-28 02:58:05,893 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 71 transitions. [2024-06-28 02:58:05,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 153 flow [2024-06-28 02:58:05,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:58:05,895 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-28 02:58:05,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-28 02:58:05,896 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-28 02:58:05,896 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-28 02:58:05,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:05,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:05,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:05,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:58:05,897 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)] === [2024-06-28 02:58:05,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1665613782, now seen corresponding path program 1 times [2024-06-28 02:58:05,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:05,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011790984] [2024-06-28 02:58:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:05,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:06,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:06,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011790984] [2024-06-28 02:58:06,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011790984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:06,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:06,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:58:06,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344301256] [2024-06-28 02:58:06,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:06,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:58:06,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:06,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:58:06,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:58:06,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-28 02:58:06,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:06,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:06,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-28 02:58:06,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:07,055 INFO L124 PetriNetUnfolderBase]: 153/295 cut-off events. [2024-06-28 02:58:07,056 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-06-28 02:58:07,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744 conditions, 295 events. 153/295 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1060 event pairs, 43 based on Foata normal form. 2/295 useless extension candidates. Maximal degree in co-relation 730. Up to 246 conditions per place. [2024-06-28 02:58:07,060 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2024-06-28 02:58:07,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 234 flow [2024-06-28 02:58:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:58:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:58:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-28 02:58:07,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 02:58:07,065 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 6 states and 98 transitions. [2024-06-28 02:58:07,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 234 flow [2024-06-28 02:58:07,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 222 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:58:07,069 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 132 flow [2024-06-28 02:58:07,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-28 02:58:07,071 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-28 02:58:07,071 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 132 flow [2024-06-28 02:58:07,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:07,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:07,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:07,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:58:07,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:07,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1811575236, now seen corresponding path program 1 times [2024-06-28 02:58:07,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:07,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412645575] [2024-06-28 02:58:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:07,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:08,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:08,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412645575] [2024-06-28 02:58:08,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412645575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:08,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:08,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:58:08,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103931979] [2024-06-28 02:58:08,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:08,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:58:08,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:08,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:58:08,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:58:08,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-28 02:58:08,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 132 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:08,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:08,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-28 02:58:08,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:08,366 INFO L124 PetriNetUnfolderBase]: 149/285 cut-off events. [2024-06-28 02:58:08,367 INFO L125 PetriNetUnfolderBase]: For 300/300 co-relation queries the response was YES. [2024-06-28 02:58:08,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 285 events. 149/285 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1000 event pairs, 24 based on Foata normal form. 4/287 useless extension candidates. Maximal degree in co-relation 791. Up to 220 conditions per place. [2024-06-28 02:58:08,369 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-28 02:58:08,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 254 flow [2024-06-28 02:58:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:08,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-28 02:58:08,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-28 02:58:08,370 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 132 flow. Second operand 7 states and 108 transitions. [2024-06-28 02:58:08,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 254 flow [2024-06-28 02:58:08,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 237 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 02:58:08,373 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 131 flow [2024-06-28 02:58:08,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2024-06-28 02:58:08,374 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-06-28 02:58:08,374 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 131 flow [2024-06-28 02:58:08,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:08,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:08,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:58:08,375 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)] === [2024-06-28 02:58:08,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash -524096948, now seen corresponding path program 1 times [2024-06-28 02:58:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:08,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523025007] [2024-06-28 02:58:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:08,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:08,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523025007] [2024-06-28 02:58:08,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523025007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:08,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:08,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:58:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730304186] [2024-06-28 02:58:08,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:08,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:58:08,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:58:08,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:58:08,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:08,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:08,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:08,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:08,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:09,140 INFO L124 PetriNetUnfolderBase]: 174/315 cut-off events. [2024-06-28 02:58:09,140 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-06-28 02:58:09,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 315 events. 174/315 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1051 event pairs, 47 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 938. Up to 304 conditions per place. [2024-06-28 02:58:09,143 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 28 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-28 02:58:09,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 217 flow [2024-06-28 02:58:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:58:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:58:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-06-28 02:58:09,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-28 02:58:09,144 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 131 flow. Second operand 5 states and 59 transitions. [2024-06-28 02:58:09,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 217 flow [2024-06-28 02:58:09,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 193 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:09,147 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 134 flow [2024-06-28 02:58:09,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-28 02:58:09,148 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-06-28 02:58:09,148 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 134 flow [2024-06-28 02:58:09,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:09,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:09,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:09,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:58:09,149 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)] === [2024-06-28 02:58:09,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:09,149 INFO L85 PathProgramCache]: Analyzing trace with hash 932865172, now seen corresponding path program 1 times [2024-06-28 02:58:09,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:09,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140795838] [2024-06-28 02:58:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:09,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:09,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:09,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140795838] [2024-06-28 02:58:09,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140795838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:09,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:09,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:58:09,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351439187] [2024-06-28 02:58:09,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:09,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:58:09,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:09,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:58:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:58:09,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:09,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:09,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:09,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:09,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:10,058 INFO L124 PetriNetUnfolderBase]: 168/306 cut-off events. [2024-06-28 02:58:10,058 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2024-06-28 02:58:10,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 306 events. 168/306 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1005 event pairs, 44 based on Foata normal form. 3/307 useless extension candidates. Maximal degree in co-relation 940. Up to 286 conditions per place. [2024-06-28 02:58:10,060 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-06-28 02:58:10,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 238 flow [2024-06-28 02:58:10,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:58:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:58:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-28 02:58:10,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 02:58:10,062 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 134 flow. Second operand 6 states and 70 transitions. [2024-06-28 02:58:10,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 238 flow [2024-06-28 02:58:10,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 227 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 02:58:10,064 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 156 flow [2024-06-28 02:58:10,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-28 02:58:10,065 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-28 02:58:10,065 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 156 flow [2024-06-28 02:58:10,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:10,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:10,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:10,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:58:10,067 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)] === [2024-06-28 02:58:10,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1449334393, now seen corresponding path program 1 times [2024-06-28 02:58:10,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:10,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816928677] [2024-06-28 02:58:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:10,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:10,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:10,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816928677] [2024-06-28 02:58:10,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816928677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:10,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:10,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:58:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004731950] [2024-06-28 02:58:10,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:10,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:58:10,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:58:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:58:10,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:10,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:10,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:10,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:10,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:10,885 INFO L124 PetriNetUnfolderBase]: 180/327 cut-off events. [2024-06-28 02:58:10,886 INFO L125 PetriNetUnfolderBase]: For 777/777 co-relation queries the response was YES. [2024-06-28 02:58:10,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 327 events. 180/327 cut-off events. For 777/777 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1095 event pairs, 45 based on Foata normal form. 1/326 useless extension candidates. Maximal degree in co-relation 1078. Up to 303 conditions per place. [2024-06-28 02:58:10,888 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 13 changer transitions 0/48 dead transitions. [2024-06-28 02:58:10,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 315 flow [2024-06-28 02:58:10,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:10,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-28 02:58:10,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-28 02:58:10,890 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 156 flow. Second operand 7 states and 79 transitions. [2024-06-28 02:58:10,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 315 flow [2024-06-28 02:58:10,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 296 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:10,893 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 224 flow [2024-06-28 02:58:10,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=224, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-06-28 02:58:10,894 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-06-28 02:58:10,894 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 224 flow [2024-06-28 02:58:10,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:10,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:10,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:10,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:58:10,895 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)] === [2024-06-28 02:58:10,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:10,896 INFO L85 PathProgramCache]: Analyzing trace with hash -372880819, now seen corresponding path program 2 times [2024-06-28 02:58:10,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:10,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526788402] [2024-06-28 02:58:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:10,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:11,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:11,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526788402] [2024-06-28 02:58:11,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526788402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:11,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:11,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:58:11,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619156601] [2024-06-28 02:58:11,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:11,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:58:11,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:11,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:58:11,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:58:11,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:11,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:11,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:11,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:11,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:11,732 INFO L124 PetriNetUnfolderBase]: 178/324 cut-off events. [2024-06-28 02:58:11,732 INFO L125 PetriNetUnfolderBase]: For 1013/1013 co-relation queries the response was YES. [2024-06-28 02:58:11,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 324 events. 178/324 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1076 event pairs, 44 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 1151. Up to 309 conditions per place. [2024-06-28 02:58:11,735 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 35 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2024-06-28 02:58:11,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 324 flow [2024-06-28 02:58:11,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:58:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:58:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-28 02:58:11,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 02:58:11,737 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 224 flow. Second operand 6 states and 68 transitions. [2024-06-28 02:58:11,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 324 flow [2024-06-28 02:58:11,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 46 transitions, 316 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 02:58:11,740 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 239 flow [2024-06-28 02:58:11,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2024-06-28 02:58:11,741 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-06-28 02:58:11,741 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 239 flow [2024-06-28 02:58:11,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:11,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:11,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:11,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:58:11,742 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)] === [2024-06-28 02:58:11,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:11,742 INFO L85 PathProgramCache]: Analyzing trace with hash -132746257, now seen corresponding path program 3 times [2024-06-28 02:58:11,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:11,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842281130] [2024-06-28 02:58:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:11,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:12,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:12,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842281130] [2024-06-28 02:58:12,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842281130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:12,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:12,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:58:12,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825165147] [2024-06-28 02:58:12,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:12,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:58:12,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:58:12,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:58:12,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:12,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 239 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:12,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:12,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:12,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:12,536 INFO L124 PetriNetUnfolderBase]: 176/321 cut-off events. [2024-06-28 02:58:12,537 INFO L125 PetriNetUnfolderBase]: For 1287/1287 co-relation queries the response was YES. [2024-06-28 02:58:12,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 321 events. 176/321 cut-off events. For 1287/1287 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1068 event pairs, 44 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1178. Up to 289 conditions per place. [2024-06-28 02:58:12,540 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 17 changer transitions 0/54 dead transitions. [2024-06-28 02:58:12,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 390 flow [2024-06-28 02:58:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:12,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:12,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-28 02:58:12,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-28 02:58:12,542 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 239 flow. Second operand 7 states and 83 transitions. [2024-06-28 02:58:12,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 390 flow [2024-06-28 02:58:12,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 373 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:12,547 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 300 flow [2024-06-28 02:58:12,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-06-28 02:58:12,548 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-28 02:58:12,548 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 300 flow [2024-06-28 02:58:12,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:12,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:12,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:12,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:58:12,549 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)] === [2024-06-28 02:58:12,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:12,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1342187271, now seen corresponding path program 1 times [2024-06-28 02:58:12,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:12,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773691250] [2024-06-28 02:58:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:12,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:13,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:13,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773691250] [2024-06-28 02:58:13,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773691250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:13,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:13,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247291197] [2024-06-28 02:58:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:13,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:13,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:13,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:13,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:13,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:13,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:13,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:13,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:13,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:13,599 INFO L124 PetriNetUnfolderBase]: 183/334 cut-off events. [2024-06-28 02:58:13,599 INFO L125 PetriNetUnfolderBase]: For 1662/1662 co-relation queries the response was YES. [2024-06-28 02:58:13,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 334 events. 183/334 cut-off events. For 1662/1662 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1129 event pairs, 43 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 1318. Up to 311 conditions per place. [2024-06-28 02:58:13,603 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 43 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-28 02:58:13,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 454 flow [2024-06-28 02:58:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 02:58:13,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 02:58:13,604 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 300 flow. Second operand 8 states and 86 transitions. [2024-06-28 02:58:13,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 454 flow [2024-06-28 02:58:13,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 422 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 02:58:13,608 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 330 flow [2024-06-28 02:58:13,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=330, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2024-06-28 02:58:13,609 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-28 02:58:13,609 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 330 flow [2024-06-28 02:58:13,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:13,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:13,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:13,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:58:13,610 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)] === [2024-06-28 02:58:13,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:13,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1342067301, now seen corresponding path program 2 times [2024-06-28 02:58:13,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:13,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836352205] [2024-06-28 02:58:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:13,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:14,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:14,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836352205] [2024-06-28 02:58:14,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836352205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:14,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:14,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:14,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019076008] [2024-06-28 02:58:14,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:14,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:14,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:14,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:14,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:14,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:14,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:14,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:14,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:14,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:14,427 INFO L124 PetriNetUnfolderBase]: 191/347 cut-off events. [2024-06-28 02:58:14,427 INFO L125 PetriNetUnfolderBase]: For 2037/2037 co-relation queries the response was YES. [2024-06-28 02:58:14,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 347 events. 191/347 cut-off events. For 2037/2037 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1195 event pairs, 43 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 1447. Up to 284 conditions per place. [2024-06-28 02:58:14,431 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 39 selfloop transitions, 25 changer transitions 0/66 dead transitions. [2024-06-28 02:58:14,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 576 flow [2024-06-28 02:58:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-28 02:58:14,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-28 02:58:14,434 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 330 flow. Second operand 7 states and 86 transitions. [2024-06-28 02:58:14,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 576 flow [2024-06-28 02:58:14,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 66 transitions, 542 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:14,439 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 404 flow [2024-06-28 02:58:14,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=404, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-06-28 02:58:14,440 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-28 02:58:14,441 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 404 flow [2024-06-28 02:58:14,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:14,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:14,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:14,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:58:14,441 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)] === [2024-06-28 02:58:14,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:14,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1979691847, now seen corresponding path program 1 times [2024-06-28 02:58:14,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:14,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025322096] [2024-06-28 02:58:14,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:14,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:15,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:15,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025322096] [2024-06-28 02:58:15,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025322096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:15,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:15,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:15,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697250226] [2024-06-28 02:58:15,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:15,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:15,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:15,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:15,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:15,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:15,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 404 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:15,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:15,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:15,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:15,274 INFO L124 PetriNetUnfolderBase]: 210/378 cut-off events. [2024-06-28 02:58:15,275 INFO L125 PetriNetUnfolderBase]: For 2797/2797 co-relation queries the response was YES. [2024-06-28 02:58:15,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 378 events. 210/378 cut-off events. For 2797/2797 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1332 event pairs, 47 based on Foata normal form. 3/379 useless extension candidates. Maximal degree in co-relation 1660. Up to 315 conditions per place. [2024-06-28 02:58:15,279 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 21 changer transitions 0/74 dead transitions. [2024-06-28 02:58:15,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 630 flow [2024-06-28 02:58:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:15,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-28 02:58:15,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-28 02:58:15,281 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 404 flow. Second operand 7 states and 89 transitions. [2024-06-28 02:58:15,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 630 flow [2024-06-28 02:58:15,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 611 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 02:58:15,286 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 477 flow [2024-06-28 02:58:15,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2024-06-28 02:58:15,287 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-28 02:58:15,287 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 477 flow [2024-06-28 02:58:15,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:15,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:15,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:15,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:58:15,288 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)] === [2024-06-28 02:58:15,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:15,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1201973953, now seen corresponding path program 3 times [2024-06-28 02:58:15,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:15,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147793659] [2024-06-28 02:58:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:15,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:15,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147793659] [2024-06-28 02:58:15,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147793659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:15,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:15,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868021849] [2024-06-28 02:58:15,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:15,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:15,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:15,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:15,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:15,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 477 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:15,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:15,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:15,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:16,086 INFO L124 PetriNetUnfolderBase]: 208/375 cut-off events. [2024-06-28 02:58:16,086 INFO L125 PetriNetUnfolderBase]: For 3104/3104 co-relation queries the response was YES. [2024-06-28 02:58:16,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 375 events. 208/375 cut-off events. For 3104/3104 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1314 event pairs, 46 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 1776. Up to 356 conditions per place. [2024-06-28 02:58:16,090 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 54 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2024-06-28 02:58:16,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 67 transitions, 621 flow [2024-06-28 02:58:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-28 02:58:16,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 02:58:16,091 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 477 flow. Second operand 7 states and 77 transitions. [2024-06-28 02:58:16,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 67 transitions, 621 flow [2024-06-28 02:58:16,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 67 transitions, 595 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 02:58:16,098 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 478 flow [2024-06-28 02:58:16,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=478, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2024-06-28 02:58:16,099 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-28 02:58:16,099 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 478 flow [2024-06-28 02:58:16,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:16,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:16,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:16,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:58:16,100 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)] === [2024-06-28 02:58:16,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:16,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1975050217, now seen corresponding path program 2 times [2024-06-28 02:58:16,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:16,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926733236] [2024-06-28 02:58:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:16,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:16,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926733236] [2024-06-28 02:58:16,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926733236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:16,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:16,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:16,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100638555] [2024-06-28 02:58:16,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:16,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:16,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:16,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:16,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:16,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 478 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:16,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:16,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:16,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:17,008 INFO L124 PetriNetUnfolderBase]: 217/390 cut-off events. [2024-06-28 02:58:17,008 INFO L125 PetriNetUnfolderBase]: For 3691/3691 co-relation queries the response was YES. [2024-06-28 02:58:17,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 390 events. 217/390 cut-off events. For 3691/3691 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1386 event pairs, 46 based on Foata normal form. 3/391 useless extension candidates. Maximal degree in co-relation 1848. Up to 348 conditions per place. [2024-06-28 02:58:17,011 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 58 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2024-06-28 02:58:17,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 74 transitions, 692 flow [2024-06-28 02:58:17,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:17,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-28 02:58:17,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 02:58:17,013 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 478 flow. Second operand 7 states and 84 transitions. [2024-06-28 02:58:17,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 74 transitions, 692 flow [2024-06-28 02:58:17,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 657 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:17,020 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 492 flow [2024-06-28 02:58:17,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2024-06-28 02:58:17,021 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-28 02:58:17,021 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 492 flow [2024-06-28 02:58:17,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:17,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:17,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:17,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:58:17,022 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)] === [2024-06-28 02:58:17,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:17,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1226991697, now seen corresponding path program 3 times [2024-06-28 02:58:17,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:17,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005482852] [2024-06-28 02:58:17,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:17,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:17,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:17,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005482852] [2024-06-28 02:58:17,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005482852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:17,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:17,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:17,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805955072] [2024-06-28 02:58:17,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:17,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:17,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:17,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:17,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 492 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:17,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:17,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:17,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:17,976 INFO L124 PetriNetUnfolderBase]: 211/381 cut-off events. [2024-06-28 02:58:17,977 INFO L125 PetriNetUnfolderBase]: For 3860/3860 co-relation queries the response was YES. [2024-06-28 02:58:17,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 381 events. 211/381 cut-off events. For 3860/3860 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1347 event pairs, 44 based on Foata normal form. 3/382 useless extension candidates. Maximal degree in co-relation 1819. Up to 356 conditions per place. [2024-06-28 02:58:17,980 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 57 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-06-28 02:58:17,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 71 transitions, 650 flow [2024-06-28 02:58:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 02:58:17,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 02:58:17,981 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 492 flow. Second operand 8 states and 86 transitions. [2024-06-28 02:58:17,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 71 transitions, 650 flow [2024-06-28 02:58:17,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 71 transitions, 594 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:17,988 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 465 flow [2024-06-28 02:58:17,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=465, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-06-28 02:58:17,989 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-06-28 02:58:17,989 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 465 flow [2024-06-28 02:58:17,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:17,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:17,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:17,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:58:17,990 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)] === [2024-06-28 02:58:17,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:17,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1018178481, now seen corresponding path program 4 times [2024-06-28 02:58:17,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:17,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486216061] [2024-06-28 02:58:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:17,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:18,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:18,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486216061] [2024-06-28 02:58:18,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486216061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:18,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:18,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:18,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340419068] [2024-06-28 02:58:18,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:18,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:18,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:18,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:18,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:18,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:18,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 465 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:18,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:18,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:18,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:18,904 INFO L124 PetriNetUnfolderBase]: 218/393 cut-off events. [2024-06-28 02:58:18,904 INFO L125 PetriNetUnfolderBase]: For 3870/3870 co-relation queries the response was YES. [2024-06-28 02:58:18,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 393 events. 218/393 cut-off events. For 3870/3870 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1401 event pairs, 42 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1861. Up to 346 conditions per place. [2024-06-28 02:58:18,908 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 57 selfloop transitions, 23 changer transitions 0/82 dead transitions. [2024-06-28 02:58:18,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 733 flow [2024-06-28 02:58:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:18,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:58:18,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3814814814814815 [2024-06-28 02:58:18,911 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 465 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:58:18,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 733 flow [2024-06-28 02:58:18,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 82 transitions, 703 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:18,919 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 538 flow [2024-06-28 02:58:18,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=538, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-06-28 02:58:18,920 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-28 02:58:18,920 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 538 flow [2024-06-28 02:58:18,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:18,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:18,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:18,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:58:18,921 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)] === [2024-06-28 02:58:18,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:18,922 INFO L85 PathProgramCache]: Analyzing trace with hash 154776599, now seen corresponding path program 5 times [2024-06-28 02:58:18,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:18,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497087610] [2024-06-28 02:58:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:18,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:19,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:19,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497087610] [2024-06-28 02:58:19,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497087610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:19,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:19,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:58:19,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092828430] [2024-06-28 02:58:19,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:19,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:58:19,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:58:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:58:19,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:19,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 538 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:19,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:19,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:19,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:19,790 INFO L124 PetriNetUnfolderBase]: 216/390 cut-off events. [2024-06-28 02:58:19,790 INFO L125 PetriNetUnfolderBase]: For 4257/4257 co-relation queries the response was YES. [2024-06-28 02:58:19,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1937 conditions, 390 events. 216/390 cut-off events. For 4257/4257 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1408 event pairs, 42 based on Foata normal form. 1/389 useless extension candidates. Maximal degree in co-relation 1898. Up to 350 conditions per place. [2024-06-28 02:58:19,794 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 59 selfloop transitions, 19 changer transitions 0/80 dead transitions. [2024-06-28 02:58:19,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 80 transitions, 736 flow [2024-06-28 02:58:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 02:58:19,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 02:58:19,795 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 538 flow. Second operand 8 states and 93 transitions. [2024-06-28 02:58:19,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 80 transitions, 736 flow [2024-06-28 02:58:19,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 656 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:19,803 INFO L231 Difference]: Finished difference. Result has 84 places, 69 transitions, 513 flow [2024-06-28 02:58:19,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=513, PETRI_PLACES=84, PETRI_TRANSITIONS=69} [2024-06-28 02:58:19,804 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-06-28 02:58:19,805 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 69 transitions, 513 flow [2024-06-28 02:58:19,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:19,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:19,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:19,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:58:19,805 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)] === [2024-06-28 02:58:19,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:19,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1341778570, now seen corresponding path program 1 times [2024-06-28 02:58:19,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:19,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232018317] [2024-06-28 02:58:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:19,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:20,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:20,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232018317] [2024-06-28 02:58:20,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232018317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:20,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:20,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:20,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831488510] [2024-06-28 02:58:20,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:20,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:20,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:20,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:20,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:20,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:20,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 513 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:20,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:20,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:20,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:21,113 INFO L124 PetriNetUnfolderBase]: 224/403 cut-off events. [2024-06-28 02:58:21,113 INFO L125 PetriNetUnfolderBase]: For 4882/4882 co-relation queries the response was YES. [2024-06-28 02:58:21,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2002 conditions, 403 events. 224/403 cut-off events. For 4882/4882 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1464 event pairs, 41 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 1962. Up to 331 conditions per place. [2024-06-28 02:58:21,117 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 58 selfloop transitions, 29 changer transitions 0/89 dead transitions. [2024-06-28 02:58:21,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 799 flow [2024-06-28 02:58:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 02:58:21,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-28 02:58:21,118 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 513 flow. Second operand 9 states and 106 transitions. [2024-06-28 02:58:21,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 799 flow [2024-06-28 02:58:21,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 761 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:21,127 INFO L231 Difference]: Finished difference. Result has 88 places, 73 transitions, 574 flow [2024-06-28 02:58:21,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=574, PETRI_PLACES=88, PETRI_TRANSITIONS=73} [2024-06-28 02:58:21,127 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-28 02:58:21,127 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 73 transitions, 574 flow [2024-06-28 02:58:21,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:21,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:21,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:21,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:58:21,128 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)] === [2024-06-28 02:58:21,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:21,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1341868780, now seen corresponding path program 2 times [2024-06-28 02:58:21,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:21,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340340118] [2024-06-28 02:58:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:21,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:22,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:22,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340340118] [2024-06-28 02:58:22,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340340118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:22,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:22,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:22,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996934938] [2024-06-28 02:58:22,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:22,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:22,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:22,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:22,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:22,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 73 transitions, 574 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:22,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:22,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:22,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:22,404 INFO L124 PetriNetUnfolderBase]: 222/400 cut-off events. [2024-06-28 02:58:22,405 INFO L125 PetriNetUnfolderBase]: For 5310/5310 co-relation queries the response was YES. [2024-06-28 02:58:22,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2057 conditions, 400 events. 222/400 cut-off events. For 5310/5310 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1451 event pairs, 41 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 2016. Up to 347 conditions per place. [2024-06-28 02:58:22,408 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 57 selfloop transitions, 25 changer transitions 0/84 dead transitions. [2024-06-28 02:58:22,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 84 transitions, 766 flow [2024-06-28 02:58:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:22,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 02:58:22,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 02:58:22,410 INFO L175 Difference]: Start difference. First operand has 88 places, 73 transitions, 574 flow. Second operand 8 states and 92 transitions. [2024-06-28 02:58:22,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 84 transitions, 766 flow [2024-06-28 02:58:22,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 712 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:22,424 INFO L231 Difference]: Finished difference. Result has 91 places, 73 transitions, 577 flow [2024-06-28 02:58:22,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=91, PETRI_TRANSITIONS=73} [2024-06-28 02:58:22,425 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-28 02:58:22,425 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 73 transitions, 577 flow [2024-06-28 02:58:22,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:22,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:22,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:22,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:58:22,426 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)] === [2024-06-28 02:58:22,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:22,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1341868935, now seen corresponding path program 1 times [2024-06-28 02:58:22,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:22,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119850542] [2024-06-28 02:58:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:22,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:23,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:23,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119850542] [2024-06-28 02:58:23,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119850542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:23,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:23,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:23,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952526899] [2024-06-28 02:58:23,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:23,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:23,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:23,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:23,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:23,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 73 transitions, 577 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:23,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:23,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:23,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:23,365 INFO L124 PetriNetUnfolderBase]: 231/415 cut-off events. [2024-06-28 02:58:23,365 INFO L125 PetriNetUnfolderBase]: For 6285/6285 co-relation queries the response was YES. [2024-06-28 02:58:23,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 415 events. 231/415 cut-off events. For 6285/6285 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1523 event pairs, 40 based on Foata normal form. 3/416 useless extension candidates. Maximal degree in co-relation 2114. Up to 356 conditions per place. [2024-06-28 02:58:23,369 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 61 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2024-06-28 02:58:23,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 88 transitions, 797 flow [2024-06-28 02:58:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 02:58:23,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-28 02:58:23,371 INFO L175 Difference]: Start difference. First operand has 91 places, 73 transitions, 577 flow. Second operand 8 states and 94 transitions. [2024-06-28 02:58:23,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 88 transitions, 797 flow [2024-06-28 02:58:23,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 88 transitions, 739 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:23,390 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 594 flow [2024-06-28 02:58:23,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=594, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-06-28 02:58:23,391 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-28 02:58:23,391 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 594 flow [2024-06-28 02:58:23,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:23,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:23,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:23,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:58:23,392 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)] === [2024-06-28 02:58:23,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:23,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1345587850, now seen corresponding path program 3 times [2024-06-28 02:58:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:23,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354144858] [2024-06-28 02:58:23,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:23,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:24,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:24,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354144858] [2024-06-28 02:58:24,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354144858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:24,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:24,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:24,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428179820] [2024-06-28 02:58:24,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:24,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:24,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:24,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:24,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:24,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:24,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 594 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:24,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:24,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:24,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:24,415 INFO L124 PetriNetUnfolderBase]: 234/420 cut-off events. [2024-06-28 02:58:24,415 INFO L125 PetriNetUnfolderBase]: For 6538/6538 co-relation queries the response was YES. [2024-06-28 02:58:24,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 420 events. 234/420 cut-off events. For 6538/6538 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1547 event pairs, 43 based on Foata normal form. 1/419 useless extension candidates. Maximal degree in co-relation 2198. Up to 351 conditions per place. [2024-06-28 02:58:24,419 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 52 selfloop transitions, 32 changer transitions 0/86 dead transitions. [2024-06-28 02:58:24,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 86 transitions, 804 flow [2024-06-28 02:58:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 02:58:24,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 02:58:24,421 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 594 flow. Second operand 8 states and 93 transitions. [2024-06-28 02:58:24,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 86 transitions, 804 flow [2024-06-28 02:58:24,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 86 transitions, 749 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:24,434 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 632 flow [2024-06-28 02:58:24,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=632, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-06-28 02:58:24,434 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2024-06-28 02:58:24,434 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 632 flow [2024-06-28 02:58:24,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:24,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:24,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:24,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:58:24,435 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)] === [2024-06-28 02:58:24,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1345588005, now seen corresponding path program 2 times [2024-06-28 02:58:24,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:24,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023947889] [2024-06-28 02:58:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:24,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:25,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:25,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023947889] [2024-06-28 02:58:25,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023947889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:25,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:25,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:25,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462287309] [2024-06-28 02:58:25,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:25,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:25,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:25,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:25,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:25,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:25,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:25,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:25,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:25,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:25,418 INFO L124 PetriNetUnfolderBase]: 268/475 cut-off events. [2024-06-28 02:58:25,418 INFO L125 PetriNetUnfolderBase]: For 8804/8804 co-relation queries the response was YES. [2024-06-28 02:58:25,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 475 events. 268/475 cut-off events. For 8804/8804 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1817 event pairs, 53 based on Foata normal form. 3/476 useless extension candidates. Maximal degree in co-relation 2578. Up to 311 conditions per place. [2024-06-28 02:58:25,422 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 64 selfloop transitions, 36 changer transitions 0/102 dead transitions. [2024-06-28 02:58:25,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 102 transitions, 1020 flow [2024-06-28 02:58:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-28 02:58:25,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-28 02:58:25,424 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 632 flow. Second operand 8 states and 107 transitions. [2024-06-28 02:58:25,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 102 transitions, 1020 flow [2024-06-28 02:58:25,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 943 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:25,442 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 690 flow [2024-06-28 02:58:25,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=690, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2024-06-28 02:58:25,442 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 67 predicate places. [2024-06-28 02:58:25,442 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 690 flow [2024-06-28 02:58:25,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:25,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:25,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:25,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:58:25,443 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)] === [2024-06-28 02:58:25,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:25,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1345593585, now seen corresponding path program 3 times [2024-06-28 02:58:25,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:25,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456654109] [2024-06-28 02:58:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:25,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:26,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:26,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456654109] [2024-06-28 02:58:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456654109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:26,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:26,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:26,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593255426] [2024-06-28 02:58:26,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:26,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:26,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:26,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 690 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:26,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:26,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:26,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:26,400 INFO L124 PetriNetUnfolderBase]: 262/466 cut-off events. [2024-06-28 02:58:26,400 INFO L125 PetriNetUnfolderBase]: For 9012/9012 co-relation queries the response was YES. [2024-06-28 02:58:26,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2611 conditions, 466 events. 262/466 cut-off events. For 9012/9012 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1765 event pairs, 49 based on Foata normal form. 3/467 useless extension candidates. Maximal degree in co-relation 2565. Up to 307 conditions per place. [2024-06-28 02:58:26,405 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 58 selfloop transitions, 39 changer transitions 0/99 dead transitions. [2024-06-28 02:58:26,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 970 flow [2024-06-28 02:58:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:26,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-28 02:58:26,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-28 02:58:26,407 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 690 flow. Second operand 8 states and 103 transitions. [2024-06-28 02:58:26,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 970 flow [2024-06-28 02:58:26,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 99 transitions, 922 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 02:58:26,428 INFO L231 Difference]: Finished difference. Result has 101 places, 83 transitions, 725 flow [2024-06-28 02:58:26,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=725, PETRI_PLACES=101, PETRI_TRANSITIONS=83} [2024-06-28 02:58:26,429 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-28 02:58:26,429 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 83 transitions, 725 flow [2024-06-28 02:58:26,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:26,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:26,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:26,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:58:26,430 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)] === [2024-06-28 02:58:26,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:26,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1393514497, now seen corresponding path program 4 times [2024-06-28 02:58:26,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:26,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539433136] [2024-06-28 02:58:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:26,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:27,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:27,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539433136] [2024-06-28 02:58:27,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539433136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:27,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:27,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:27,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568270401] [2024-06-28 02:58:27,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:27,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:27,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:27,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:27,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:27,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:27,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 83 transitions, 725 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:27,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:27,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:27,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:27,452 INFO L124 PetriNetUnfolderBase]: 271/481 cut-off events. [2024-06-28 02:58:27,453 INFO L125 PetriNetUnfolderBase]: For 9928/9928 co-relation queries the response was YES. [2024-06-28 02:58:27,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2768 conditions, 481 events. 271/481 cut-off events. For 9928/9928 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1848 event pairs, 52 based on Foata normal form. 3/482 useless extension candidates. Maximal degree in co-relation 2720. Up to 408 conditions per place. [2024-06-28 02:58:27,458 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 78 selfloop transitions, 19 changer transitions 0/99 dead transitions. [2024-06-28 02:58:27,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 99 transitions, 1027 flow [2024-06-28 02:58:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 02:58:27,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 02:58:27,459 INFO L175 Difference]: Start difference. First operand has 101 places, 83 transitions, 725 flow. Second operand 8 states and 96 transitions. [2024-06-28 02:58:27,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 99 transitions, 1027 flow [2024-06-28 02:58:27,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 939 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:27,477 INFO L231 Difference]: Finished difference. Result has 102 places, 85 transitions, 706 flow [2024-06-28 02:58:27,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=706, PETRI_PLACES=102, PETRI_TRANSITIONS=85} [2024-06-28 02:58:27,478 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-28 02:58:27,478 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 85 transitions, 706 flow [2024-06-28 02:58:27,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:27,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:27,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:27,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:58:27,479 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)] === [2024-06-28 02:58:27,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash -127469059, now seen corresponding path program 5 times [2024-06-28 02:58:27,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:27,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035906435] [2024-06-28 02:58:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:28,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:28,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035906435] [2024-06-28 02:58:28,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035906435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:28,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:28,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:28,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685678249] [2024-06-28 02:58:28,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:28,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:28,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:28,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:28,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:28,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:28,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 85 transitions, 706 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:28,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:28,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:28,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:28,601 INFO L124 PetriNetUnfolderBase]: 280/496 cut-off events. [2024-06-28 02:58:28,602 INFO L125 PetriNetUnfolderBase]: For 10590/10590 co-relation queries the response was YES. [2024-06-28 02:58:28,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2821 conditions, 496 events. 280/496 cut-off events. For 10590/10590 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1917 event pairs, 58 based on Foata normal form. 3/497 useless extension candidates. Maximal degree in co-relation 2772. Up to 458 conditions per place. [2024-06-28 02:58:28,609 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 82 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-06-28 02:58:28,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 952 flow [2024-06-28 02:58:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:58:28,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 02:58:28,611 INFO L175 Difference]: Start difference. First operand has 102 places, 85 transitions, 706 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:58:28,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 952 flow [2024-06-28 02:58:28,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 98 transitions, 882 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:28,633 INFO L231 Difference]: Finished difference. Result has 105 places, 87 transitions, 699 flow [2024-06-28 02:58:28,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=699, PETRI_PLACES=105, PETRI_TRANSITIONS=87} [2024-06-28 02:58:28,634 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-28 02:58:28,634 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 87 transitions, 699 flow [2024-06-28 02:58:28,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:28,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:28,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:28,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:58:28,635 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)] === [2024-06-28 02:58:28,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash 617762437, now seen corresponding path program 6 times [2024-06-28 02:58:28,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:28,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624699613] [2024-06-28 02:58:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:28,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:29,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:29,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624699613] [2024-06-28 02:58:29,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624699613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:29,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:29,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:29,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426068251] [2024-06-28 02:58:29,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:29,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:29,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:29,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:29,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:29,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:29,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 87 transitions, 699 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:29,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:29,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:29,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:29,572 INFO L124 PetriNetUnfolderBase]: 274/487 cut-off events. [2024-06-28 02:58:29,573 INFO L125 PetriNetUnfolderBase]: For 10304/10304 co-relation queries the response was YES. [2024-06-28 02:58:29,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2698 conditions, 487 events. 274/487 cut-off events. For 10304/10304 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1880 event pairs, 56 based on Foata normal form. 3/488 useless extension candidates. Maximal degree in co-relation 2648. Up to 412 conditions per place. [2024-06-28 02:58:29,579 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 78 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2024-06-28 02:58:29,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 100 transitions, 929 flow [2024-06-28 02:58:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 02:58:29,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 02:58:29,581 INFO L175 Difference]: Start difference. First operand has 105 places, 87 transitions, 699 flow. Second operand 8 states and 96 transitions. [2024-06-28 02:58:29,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 100 transitions, 929 flow [2024-06-28 02:58:29,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 882 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:29,603 INFO L231 Difference]: Finished difference. Result has 106 places, 87 transitions, 697 flow [2024-06-28 02:58:29,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=697, PETRI_PLACES=106, PETRI_TRANSITIONS=87} [2024-06-28 02:58:29,604 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-28 02:58:29,604 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 87 transitions, 697 flow [2024-06-28 02:58:29,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:29,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:29,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:29,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:58:29,605 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)] === [2024-06-28 02:58:29,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash -134826444, now seen corresponding path program 4 times [2024-06-28 02:58:29,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:29,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272445665] [2024-06-28 02:58:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:30,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:30,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:30,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272445665] [2024-06-28 02:58:30,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272445665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:30,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:30,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:30,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046997952] [2024-06-28 02:58:30,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:30,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:30,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:30,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:30,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:30,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:30,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 87 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:30,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:30,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:30,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:30,774 INFO L124 PetriNetUnfolderBase]: 272/484 cut-off events. [2024-06-28 02:58:30,774 INFO L125 PetriNetUnfolderBase]: For 9994/9994 co-relation queries the response was YES. [2024-06-28 02:58:30,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2670 conditions, 484 events. 272/484 cut-off events. For 9994/9994 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1863 event pairs, 60 based on Foata normal form. 1/483 useless extension candidates. Maximal degree in co-relation 2619. Up to 462 conditions per place. [2024-06-28 02:58:30,779 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 81 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-06-28 02:58:30,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 96 transitions, 925 flow [2024-06-28 02:58:30,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:30,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 02:58:30,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 02:58:30,780 INFO L175 Difference]: Start difference. First operand has 106 places, 87 transitions, 697 flow. Second operand 8 states and 86 transitions. [2024-06-28 02:58:30,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 96 transitions, 925 flow [2024-06-28 02:58:30,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 96 transitions, 873 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:30,795 INFO L231 Difference]: Finished difference. Result has 107 places, 89 transitions, 704 flow [2024-06-28 02:58:30,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=704, PETRI_PLACES=107, PETRI_TRANSITIONS=89} [2024-06-28 02:58:30,795 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-28 02:58:30,796 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 89 transitions, 704 flow [2024-06-28 02:58:30,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:30,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:30,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:30,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:58:30,796 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)] === [2024-06-28 02:58:30,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:30,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1489693582, now seen corresponding path program 1 times [2024-06-28 02:58:30,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:30,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708257871] [2024-06-28 02:58:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:30,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:31,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708257871] [2024-06-28 02:58:31,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708257871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:31,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:31,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:31,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636841136] [2024-06-28 02:58:31,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:31,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:31,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:31,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:31,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:31,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:31,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 89 transitions, 704 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:31,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:31,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:31,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:32,014 INFO L124 PetriNetUnfolderBase]: 268/478 cut-off events. [2024-06-28 02:58:32,014 INFO L125 PetriNetUnfolderBase]: For 10323/10323 co-relation queries the response was YES. [2024-06-28 02:58:32,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 478 events. 268/478 cut-off events. For 10323/10323 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1830 event pairs, 52 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2543. Up to 448 conditions per place. [2024-06-28 02:58:32,018 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 85 selfloop transitions, 13 changer transitions 0/100 dead transitions. [2024-06-28 02:58:32,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 100 transitions, 938 flow [2024-06-28 02:58:32,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:32,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 02:58:32,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 02:58:32,020 INFO L175 Difference]: Start difference. First operand has 107 places, 89 transitions, 704 flow. Second operand 8 states and 88 transitions. [2024-06-28 02:58:32,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 100 transitions, 938 flow [2024-06-28 02:58:32,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 100 transitions, 895 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:32,040 INFO L231 Difference]: Finished difference. Result has 109 places, 91 transitions, 714 flow [2024-06-28 02:58:32,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=714, PETRI_PLACES=109, PETRI_TRANSITIONS=91} [2024-06-28 02:58:32,040 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2024-06-28 02:58:32,040 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 91 transitions, 714 flow [2024-06-28 02:58:32,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:32,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:32,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:32,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:58:32,041 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)] === [2024-06-28 02:58:32,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:32,042 INFO L85 PathProgramCache]: Analyzing trace with hash -127192012, now seen corresponding path program 1 times [2024-06-28 02:58:32,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:32,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551248988] [2024-06-28 02:58:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:32,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:33,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:33,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551248988] [2024-06-28 02:58:33,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551248988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:33,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:33,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:33,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311435918] [2024-06-28 02:58:33,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:33,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:33,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:33,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:33,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:33,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:33,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 91 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:33,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:33,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:33,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:33,569 INFO L124 PetriNetUnfolderBase]: 265/473 cut-off events. [2024-06-28 02:58:33,570 INFO L125 PetriNetUnfolderBase]: For 10194/10194 co-relation queries the response was YES. [2024-06-28 02:58:33,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 473 events. 265/473 cut-off events. For 10194/10194 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1811 event pairs, 51 based on Foata normal form. 2/473 useless extension candidates. Maximal degree in co-relation 2506. Up to 445 conditions per place. [2024-06-28 02:58:33,573 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 86 selfloop transitions, 12 changer transitions 0/100 dead transitions. [2024-06-28 02:58:33,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 100 transitions, 930 flow [2024-06-28 02:58:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 02:58:33,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 02:58:33,576 INFO L175 Difference]: Start difference. First operand has 109 places, 91 transitions, 714 flow. Second operand 8 states and 86 transitions. [2024-06-28 02:58:33,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 100 transitions, 930 flow [2024-06-28 02:58:33,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 100 transitions, 890 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:33,596 INFO L231 Difference]: Finished difference. Result has 111 places, 91 transitions, 702 flow [2024-06-28 02:58:33,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=702, PETRI_PLACES=111, PETRI_TRANSITIONS=91} [2024-06-28 02:58:33,597 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-28 02:58:33,598 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 91 transitions, 702 flow [2024-06-28 02:58:33,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:33,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:33,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:33,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:58:33,598 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)] === [2024-06-28 02:58:33,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:33,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1354596488, now seen corresponding path program 1 times [2024-06-28 02:58:33,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:33,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42572778] [2024-06-28 02:58:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:33,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:34,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:34,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42572778] [2024-06-28 02:58:34,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42572778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:34,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:34,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:34,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376057983] [2024-06-28 02:58:34,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:34,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:34,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:34,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:34,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:34,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:34,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 91 transitions, 702 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:34,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:34,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:34,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:35,030 INFO L124 PetriNetUnfolderBase]: 276/494 cut-off events. [2024-06-28 02:58:35,030 INFO L125 PetriNetUnfolderBase]: For 11993/11993 co-relation queries the response was YES. [2024-06-28 02:58:35,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2745 conditions, 494 events. 276/494 cut-off events. For 11993/11993 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1925 event pairs, 33 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2691. Up to 386 conditions per place. [2024-06-28 02:58:35,035 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 79 selfloop transitions, 31 changer transitions 0/112 dead transitions. [2024-06-28 02:58:35,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 1068 flow [2024-06-28 02:58:35,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:58:35,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 02:58:35,036 INFO L175 Difference]: Start difference. First operand has 111 places, 91 transitions, 702 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:58:35,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 1068 flow [2024-06-28 02:58:35,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 1040 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:35,057 INFO L231 Difference]: Finished difference. Result has 115 places, 93 transitions, 778 flow [2024-06-28 02:58:35,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=778, PETRI_PLACES=115, PETRI_TRANSITIONS=93} [2024-06-28 02:58:35,058 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-06-28 02:58:35,058 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 93 transitions, 778 flow [2024-06-28 02:58:35,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:35,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:35,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:35,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:58:35,059 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)] === [2024-06-28 02:58:35,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash 68419962, now seen corresponding path program 1 times [2024-06-28 02:58:35,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:35,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274900292] [2024-06-28 02:58:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:35,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:35,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:35,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274900292] [2024-06-28 02:58:35,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274900292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:35,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:35,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:35,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241229213] [2024-06-28 02:58:35,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:35,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:35,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:35,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:36,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:36,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 93 transitions, 778 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:36,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:36,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:36,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:36,383 INFO L124 PetriNetUnfolderBase]: 285/509 cut-off events. [2024-06-28 02:58:36,383 INFO L125 PetriNetUnfolderBase]: For 13289/13289 co-relation queries the response was YES. [2024-06-28 02:58:36,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2887 conditions, 509 events. 285/509 cut-off events. For 13289/13289 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2004 event pairs, 49 based on Foata normal form. 3/510 useless extension candidates. Maximal degree in co-relation 2832. Up to 410 conditions per place. [2024-06-28 02:58:36,387 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 80 selfloop transitions, 34 changer transitions 0/116 dead transitions. [2024-06-28 02:58:36,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 116 transitions, 1088 flow [2024-06-28 02:58:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:58:36,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 02:58:36,389 INFO L175 Difference]: Start difference. First operand has 115 places, 93 transitions, 778 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:58:36,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 116 transitions, 1088 flow [2024-06-28 02:58:36,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 116 transitions, 1022 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:36,410 INFO L231 Difference]: Finished difference. Result has 120 places, 96 transitions, 820 flow [2024-06-28 02:58:36,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=820, PETRI_PLACES=120, PETRI_TRANSITIONS=96} [2024-06-28 02:58:36,410 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 91 predicate places. [2024-06-28 02:58:36,411 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 96 transitions, 820 flow [2024-06-28 02:58:36,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:36,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:36,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:36,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:58:36,411 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)] === [2024-06-28 02:58:36,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:36,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1354536038, now seen corresponding path program 2 times [2024-06-28 02:58:36,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:36,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126411069] [2024-06-28 02:58:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:36,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:37,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:37,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126411069] [2024-06-28 02:58:37,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126411069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:37,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:37,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:37,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745572424] [2024-06-28 02:58:37,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:37,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:37,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:37,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:37,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:37,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:37,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 96 transitions, 820 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:37,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:37,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:37,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:37,769 INFO L124 PetriNetUnfolderBase]: 289/517 cut-off events. [2024-06-28 02:58:37,769 INFO L125 PetriNetUnfolderBase]: For 13784/13784 co-relation queries the response was YES. [2024-06-28 02:58:37,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3013 conditions, 517 events. 289/517 cut-off events. For 13784/13784 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2065 event pairs, 51 based on Foata normal form. 2/517 useless extension candidates. Maximal degree in co-relation 2956. Up to 440 conditions per place. [2024-06-28 02:58:37,774 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 82 selfloop transitions, 30 changer transitions 0/114 dead transitions. [2024-06-28 02:58:37,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 114 transitions, 1106 flow [2024-06-28 02:58:37,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:58:37,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-28 02:58:37,775 INFO L175 Difference]: Start difference. First operand has 120 places, 96 transitions, 820 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:58:37,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 114 transitions, 1106 flow [2024-06-28 02:58:37,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 114 transitions, 1024 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:37,801 INFO L231 Difference]: Finished difference. Result has 121 places, 97 transitions, 818 flow [2024-06-28 02:58:37,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=818, PETRI_PLACES=121, PETRI_TRANSITIONS=97} [2024-06-28 02:58:37,802 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-06-28 02:58:37,802 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 97 transitions, 818 flow [2024-06-28 02:58:37,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:37,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:37,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:37,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:58:37,802 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)] === [2024-06-28 02:58:37,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:37,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1772508060, now seen corresponding path program 3 times [2024-06-28 02:58:37,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:37,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575720389] [2024-06-28 02:58:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:37,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:38,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575720389] [2024-06-28 02:58:38,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575720389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:38,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:38,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:38,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522166759] [2024-06-28 02:58:38,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:38,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:38,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:38,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:38,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:38,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:38,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 97 transitions, 818 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:38,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:38,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:38,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:38,993 INFO L124 PetriNetUnfolderBase]: 286/512 cut-off events. [2024-06-28 02:58:38,993 INFO L125 PetriNetUnfolderBase]: For 13579/13579 co-relation queries the response was YES. [2024-06-28 02:58:38,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 512 events. 286/512 cut-off events. For 13579/13579 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2035 event pairs, 50 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 2863. Up to 453 conditions per place. [2024-06-28 02:58:38,996 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 82 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-28 02:58:38,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 110 transitions, 1066 flow [2024-06-28 02:58:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:58:38,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-28 02:58:38,998 INFO L175 Difference]: Start difference. First operand has 121 places, 97 transitions, 818 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:58:38,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 110 transitions, 1066 flow [2024-06-28 02:58:39,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 110 transitions, 988 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:39,020 INFO L231 Difference]: Finished difference. Result has 122 places, 97 transitions, 796 flow [2024-06-28 02:58:39,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=796, PETRI_PLACES=122, PETRI_TRANSITIONS=97} [2024-06-28 02:58:39,021 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 93 predicate places. [2024-06-28 02:58:39,021 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 97 transitions, 796 flow [2024-06-28 02:58:39,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:39,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:39,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:39,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:58:39,022 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)] === [2024-06-28 02:58:39,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:39,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1236448358, now seen corresponding path program 4 times [2024-06-28 02:58:39,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:39,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191646855] [2024-06-28 02:58:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:39,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:39,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:39,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191646855] [2024-06-28 02:58:39,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191646855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:39,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:39,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:39,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74749573] [2024-06-28 02:58:39,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:39,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:39,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:39,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:39,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 97 transitions, 796 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:39,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:39,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:39,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:40,094 INFO L124 PetriNetUnfolderBase]: 290/520 cut-off events. [2024-06-28 02:58:40,094 INFO L125 PetriNetUnfolderBase]: For 14404/14404 co-relation queries the response was YES. [2024-06-28 02:58:40,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2952 conditions, 520 events. 290/520 cut-off events. For 14404/14404 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2088 event pairs, 53 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 2893. Up to 445 conditions per place. [2024-06-28 02:58:40,097 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 74 selfloop transitions, 33 changer transitions 0/109 dead transitions. [2024-06-28 02:58:40,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 109 transitions, 1056 flow [2024-06-28 02:58:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:58:40,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 02:58:40,099 INFO L175 Difference]: Start difference. First operand has 122 places, 97 transitions, 796 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:58:40,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 109 transitions, 1056 flow [2024-06-28 02:58:40,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 109 transitions, 998 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:40,129 INFO L231 Difference]: Finished difference. Result has 123 places, 98 transitions, 830 flow [2024-06-28 02:58:40,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=830, PETRI_PLACES=123, PETRI_TRANSITIONS=98} [2024-06-28 02:58:40,130 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-28 02:58:40,130 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 98 transitions, 830 flow [2024-06-28 02:58:40,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:40,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:40,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:40,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:58:40,131 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)] === [2024-06-28 02:58:40,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1236448234, now seen corresponding path program 2 times [2024-06-28 02:58:40,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:40,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302484804] [2024-06-28 02:58:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:40,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:40,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:40,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302484804] [2024-06-28 02:58:40,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302484804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:40,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:40,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:40,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103680783] [2024-06-28 02:58:40,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:40,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:40,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:40,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:40,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:41,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:41,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 98 transitions, 830 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:41,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:41,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:41,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:41,345 INFO L124 PetriNetUnfolderBase]: 314/559 cut-off events. [2024-06-28 02:58:41,346 INFO L125 PetriNetUnfolderBase]: For 17707/17707 co-relation queries the response was YES. [2024-06-28 02:58:41,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3282 conditions, 559 events. 314/559 cut-off events. For 17707/17707 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2295 event pairs, 48 based on Foata normal form. 3/560 useless extension candidates. Maximal degree in co-relation 3222. Up to 360 conditions per place. [2024-06-28 02:58:41,349 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 76 selfloop transitions, 48 changer transitions 0/126 dead transitions. [2024-06-28 02:58:41,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 126 transitions, 1274 flow [2024-06-28 02:58:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 02:58:41,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-28 02:58:41,350 INFO L175 Difference]: Start difference. First operand has 123 places, 98 transitions, 830 flow. Second operand 10 states and 129 transitions. [2024-06-28 02:58:41,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 126 transitions, 1274 flow [2024-06-28 02:58:41,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 126 transitions, 1192 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:41,374 INFO L231 Difference]: Finished difference. Result has 127 places, 104 transitions, 930 flow [2024-06-28 02:58:41,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=930, PETRI_PLACES=127, PETRI_TRANSITIONS=104} [2024-06-28 02:58:41,374 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-28 02:58:41,374 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 104 transitions, 930 flow [2024-06-28 02:58:41,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:41,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:41,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:41,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:58:41,374 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)] === [2024-06-28 02:58:41,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:41,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1236270604, now seen corresponding path program 3 times [2024-06-28 02:58:41,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:41,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480192386] [2024-06-28 02:58:41,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:41,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:42,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:42,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480192386] [2024-06-28 02:58:42,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480192386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:42,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:42,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:42,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546590905] [2024-06-28 02:58:42,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:42,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:42,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:42,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:42,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:42,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:42,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 104 transitions, 930 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:42,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:42,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:42,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:42,346 INFO L124 PetriNetUnfolderBase]: 312/556 cut-off events. [2024-06-28 02:58:42,346 INFO L125 PetriNetUnfolderBase]: For 17021/17021 co-relation queries the response was YES. [2024-06-28 02:58:42,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3403 conditions, 556 events. 312/556 cut-off events. For 17021/17021 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2294 event pairs, 47 based on Foata normal form. 1/555 useless extension candidates. Maximal degree in co-relation 3341. Up to 451 conditions per place. [2024-06-28 02:58:42,351 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 86 selfloop transitions, 39 changer transitions 0/127 dead transitions. [2024-06-28 02:58:42,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 127 transitions, 1318 flow [2024-06-28 02:58:42,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 02:58:42,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 02:58:42,353 INFO L175 Difference]: Start difference. First operand has 127 places, 104 transitions, 930 flow. Second operand 9 states and 105 transitions. [2024-06-28 02:58:42,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 127 transitions, 1318 flow [2024-06-28 02:58:42,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 1220 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:42,392 INFO L231 Difference]: Finished difference. Result has 133 places, 115 transitions, 1064 flow [2024-06-28 02:58:42,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1064, PETRI_PLACES=133, PETRI_TRANSITIONS=115} [2024-06-28 02:58:42,393 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2024-06-28 02:58:42,393 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 115 transitions, 1064 flow [2024-06-28 02:58:42,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:42,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:42,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:42,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:58:42,394 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)] === [2024-06-28 02:58:42,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash 255706758, now seen corresponding path program 4 times [2024-06-28 02:58:42,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:42,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070499838] [2024-06-28 02:58:42,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:42,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:43,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:43,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070499838] [2024-06-28 02:58:43,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070499838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:43,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:43,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:43,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965130291] [2024-06-28 02:58:43,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:43,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:43,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:43,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:43,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:43,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:43,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 115 transitions, 1064 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:43,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:43,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:43,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:43,553 INFO L124 PetriNetUnfolderBase]: 321/571 cut-off events. [2024-06-28 02:58:43,553 INFO L125 PetriNetUnfolderBase]: For 19267/19267 co-relation queries the response was YES. [2024-06-28 02:58:43,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3622 conditions, 571 events. 321/571 cut-off events. For 19267/19267 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2357 event pairs, 52 based on Foata normal form. 3/572 useless extension candidates. Maximal degree in co-relation 3555. Up to 522 conditions per place. [2024-06-28 02:58:43,556 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 112 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2024-06-28 02:58:43,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 131 transitions, 1414 flow [2024-06-28 02:58:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:43,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:58:43,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-28 02:58:43,558 INFO L175 Difference]: Start difference. First operand has 133 places, 115 transitions, 1064 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:58:43,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 131 transitions, 1414 flow [2024-06-28 02:58:43,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 131 transitions, 1331 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:43,589 INFO L231 Difference]: Finished difference. Result has 138 places, 118 transitions, 1086 flow [2024-06-28 02:58:43,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1086, PETRI_PLACES=138, PETRI_TRANSITIONS=118} [2024-06-28 02:58:43,589 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2024-06-28 02:58:43,589 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 118 transitions, 1086 flow [2024-06-28 02:58:43,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:43,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:43,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:43,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:58:43,590 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)] === [2024-06-28 02:58:43,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:43,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1970589954, now seen corresponding path program 5 times [2024-06-28 02:58:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:43,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752084831] [2024-06-28 02:58:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:43,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:44,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:44,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752084831] [2024-06-28 02:58:44,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752084831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:44,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:44,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:44,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059330799] [2024-06-28 02:58:44,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:44,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:44,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:44,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:44,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:44,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:44,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 118 transitions, 1086 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:44,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:44,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:44,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:44,860 INFO L124 PetriNetUnfolderBase]: 340/602 cut-off events. [2024-06-28 02:58:44,860 INFO L125 PetriNetUnfolderBase]: For 21622/21622 co-relation queries the response was YES. [2024-06-28 02:58:44,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3891 conditions, 602 events. 340/602 cut-off events. For 21622/21622 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2522 event pairs, 48 based on Foata normal form. 3/603 useless extension candidates. Maximal degree in co-relation 3823. Up to 485 conditions per place. [2024-06-28 02:58:44,864 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 104 selfloop transitions, 35 changer transitions 0/141 dead transitions. [2024-06-28 02:58:44,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 141 transitions, 1572 flow [2024-06-28 02:58:44,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:58:44,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-28 02:58:44,866 INFO L175 Difference]: Start difference. First operand has 138 places, 118 transitions, 1086 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:58:44,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 141 transitions, 1572 flow [2024-06-28 02:58:44,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 141 transitions, 1509 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:44,903 INFO L231 Difference]: Finished difference. Result has 141 places, 124 transitions, 1199 flow [2024-06-28 02:58:44,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1199, PETRI_PLACES=141, PETRI_TRANSITIONS=124} [2024-06-28 02:58:44,904 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 112 predicate places. [2024-06-28 02:58:44,904 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 124 transitions, 1199 flow [2024-06-28 02:58:44,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:44,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:44,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:44,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:58:44,904 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)] === [2024-06-28 02:58:44,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1719577628, now seen corresponding path program 1 times [2024-06-28 02:58:44,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:44,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7081802] [2024-06-28 02:58:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:44,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:45,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:45,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7081802] [2024-06-28 02:58:45,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7081802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:45,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:45,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:45,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586890460] [2024-06-28 02:58:45,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:45,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:45,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:45,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:45,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:45,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 124 transitions, 1199 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:45,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:45,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:45,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:46,041 INFO L124 PetriNetUnfolderBase]: 344/609 cut-off events. [2024-06-28 02:58:46,041 INFO L125 PetriNetUnfolderBase]: For 21580/21580 co-relation queries the response was YES. [2024-06-28 02:58:46,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3967 conditions, 609 events. 344/609 cut-off events. For 21580/21580 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2551 event pairs, 58 based on Foata normal form. 2/609 useless extension candidates. Maximal degree in co-relation 3898. Up to 576 conditions per place. [2024-06-28 02:58:46,045 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 123 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2024-06-28 02:58:46,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 140 transitions, 1545 flow [2024-06-28 02:58:46,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:58:46,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 02:58:46,053 INFO L175 Difference]: Start difference. First operand has 141 places, 124 transitions, 1199 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:58:46,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 140 transitions, 1545 flow [2024-06-28 02:58:46,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 140 transitions, 1459 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:46,107 INFO L231 Difference]: Finished difference. Result has 146 places, 130 transitions, 1214 flow [2024-06-28 02:58:46,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1214, PETRI_PLACES=146, PETRI_TRANSITIONS=130} [2024-06-28 02:58:46,109 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 117 predicate places. [2024-06-28 02:58:46,110 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 130 transitions, 1214 flow [2024-06-28 02:58:46,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:46,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:46,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:46,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:58:46,110 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)] === [2024-06-28 02:58:46,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:46,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1483395572, now seen corresponding path program 6 times [2024-06-28 02:58:46,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:46,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93081407] [2024-06-28 02:58:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:46,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:46,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:46,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93081407] [2024-06-28 02:58:46,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93081407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:46,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:46,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:46,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883728458] [2024-06-28 02:58:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:46,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:46,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:46,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:46,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:46,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:46,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 130 transitions, 1214 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:46,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:46,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:46,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:47,230 INFO L124 PetriNetUnfolderBase]: 338/600 cut-off events. [2024-06-28 02:58:47,230 INFO L125 PetriNetUnfolderBase]: For 20881/20881 co-relation queries the response was YES. [2024-06-28 02:58:47,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3829 conditions, 600 events. 338/600 cut-off events. For 20881/20881 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2523 event pairs, 49 based on Foata normal form. 3/601 useless extension candidates. Maximal degree in co-relation 3756. Up to 514 conditions per place. [2024-06-28 02:58:47,234 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 116 selfloop transitions, 26 changer transitions 0/144 dead transitions. [2024-06-28 02:58:47,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 144 transitions, 1542 flow [2024-06-28 02:58:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 02:58:47,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-28 02:58:47,235 INFO L175 Difference]: Start difference. First operand has 146 places, 130 transitions, 1214 flow. Second operand 9 states and 107 transitions. [2024-06-28 02:58:47,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 144 transitions, 1542 flow [2024-06-28 02:58:47,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 144 transitions, 1475 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:47,282 INFO L231 Difference]: Finished difference. Result has 150 places, 130 transitions, 1206 flow [2024-06-28 02:58:47,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=141, 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=9, PETRI_FLOW=1206, PETRI_PLACES=150, PETRI_TRANSITIONS=130} [2024-06-28 02:58:47,282 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-06-28 02:58:47,282 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 130 transitions, 1206 flow [2024-06-28 02:58:47,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:47,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:47,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:47,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:58:47,283 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)] === [2024-06-28 02:58:47,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:47,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1483217818, now seen corresponding path program 5 times [2024-06-28 02:58:47,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:47,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454300] [2024-06-28 02:58:47,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:47,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:48,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:48,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454300] [2024-06-28 02:58:48,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:48,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:48,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:48,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476801877] [2024-06-28 02:58:48,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:48,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:48,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:48,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:48,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:48,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:48,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 130 transitions, 1206 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:48,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:48,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:48,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:48,320 INFO L124 PetriNetUnfolderBase]: 335/595 cut-off events. [2024-06-28 02:58:48,320 INFO L125 PetriNetUnfolderBase]: For 19375/19375 co-relation queries the response was YES. [2024-06-28 02:58:48,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3725 conditions, 595 events. 335/595 cut-off events. For 19375/19375 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2483 event pairs, 58 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3651. Up to 567 conditions per place. [2024-06-28 02:58:48,324 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 123 selfloop transitions, 14 changer transitions 0/139 dead transitions. [2024-06-28 02:58:48,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 139 transitions, 1500 flow [2024-06-28 02:58:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 02:58:48,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 02:58:48,334 INFO L175 Difference]: Start difference. First operand has 150 places, 130 transitions, 1206 flow. Second operand 9 states and 95 transitions. [2024-06-28 02:58:48,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 139 transitions, 1500 flow [2024-06-28 02:58:48,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 139 transitions, 1432 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:48,398 INFO L231 Difference]: Finished difference. Result has 151 places, 130 transitions, 1170 flow [2024-06-28 02:58:48,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=151, PETRI_TRANSITIONS=130} [2024-06-28 02:58:48,399 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2024-06-28 02:58:48,400 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 130 transitions, 1170 flow [2024-06-28 02:58:48,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:48,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:48,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:48,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:58:48,400 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:58:48,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:48,401 INFO L85 PathProgramCache]: Analyzing trace with hash 957183208, now seen corresponding path program 1 times [2024-06-28 02:58:48,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:48,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947712666] [2024-06-28 02:58:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:48,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:49,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:49,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947712666] [2024-06-28 02:58:49,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947712666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:49,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:49,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:49,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278113307] [2024-06-28 02:58:49,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:49,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:49,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:49,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:49,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:49,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:49,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 130 transitions, 1170 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:49,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:49,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:49,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:49,670 INFO L124 PetriNetUnfolderBase]: 346/616 cut-off events. [2024-06-28 02:58:49,670 INFO L125 PetriNetUnfolderBase]: For 21969/21969 co-relation queries the response was YES. [2024-06-28 02:58:49,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3875 conditions, 616 events. 346/616 cut-off events. For 21969/21969 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2605 event pairs, 38 based on Foata normal form. 2/616 useless extension candidates. Maximal degree in co-relation 3800. Up to 468 conditions per place. [2024-06-28 02:58:49,674 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 122 selfloop transitions, 31 changer transitions 0/155 dead transitions. [2024-06-28 02:58:49,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 155 transitions, 1651 flow [2024-06-28 02:58:49,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:58:49,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-28 02:58:49,676 INFO L175 Difference]: Start difference. First operand has 151 places, 130 transitions, 1170 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:58:49,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 155 transitions, 1651 flow [2024-06-28 02:58:49,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 155 transitions, 1567 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:49,752 INFO L231 Difference]: Finished difference. Result has 155 places, 134 transitions, 1216 flow [2024-06-28 02:58:49,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1216, PETRI_PLACES=155, PETRI_TRANSITIONS=134} [2024-06-28 02:58:49,753 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-06-28 02:58:49,753 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 134 transitions, 1216 flow [2024-06-28 02:58:49,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:49,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:49,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:49,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:58:49,754 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)] === [2024-06-28 02:58:49,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:49,754 INFO L85 PathProgramCache]: Analyzing trace with hash 883251444, now seen corresponding path program 2 times [2024-06-28 02:58:49,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:49,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548496461] [2024-06-28 02:58:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:49,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548496461] [2024-06-28 02:58:50,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548496461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:50,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:50,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:50,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488402703] [2024-06-28 02:58:50,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:50,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:50,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:50,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:50,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:50,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:50,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 134 transitions, 1216 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:50,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:50,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:50,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:51,159 INFO L124 PetriNetUnfolderBase]: 386/696 cut-off events. [2024-06-28 02:58:51,160 INFO L125 PetriNetUnfolderBase]: For 33665/33665 co-relation queries the response was YES. [2024-06-28 02:58:51,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 696 events. 386/696 cut-off events. For 33665/33665 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3074 event pairs, 66 based on Foata normal form. 2/696 useless extension candidates. Maximal degree in co-relation 4672. Up to 484 conditions per place. [2024-06-28 02:58:51,164 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 125 selfloop transitions, 35 changer transitions 0/162 dead transitions. [2024-06-28 02:58:51,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 162 transitions, 1758 flow [2024-06-28 02:58:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:58:51,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 02:58:51,165 INFO L175 Difference]: Start difference. First operand has 155 places, 134 transitions, 1216 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:58:51,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 162 transitions, 1758 flow [2024-06-28 02:58:51,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 162 transitions, 1676 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:51,228 INFO L231 Difference]: Finished difference. Result has 159 places, 135 transitions, 1227 flow [2024-06-28 02:58:51,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1227, PETRI_PLACES=159, PETRI_TRANSITIONS=135} [2024-06-28 02:58:51,229 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-28 02:58:51,229 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 135 transitions, 1227 flow [2024-06-28 02:58:51,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:51,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:51,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:51,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:58:51,229 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)] === [2024-06-28 02:58:51,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash 883255319, now seen corresponding path program 1 times [2024-06-28 02:58:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:51,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200551652] [2024-06-28 02:58:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:51,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:52,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:52,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200551652] [2024-06-28 02:58:52,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200551652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:52,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:52,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:52,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455209529] [2024-06-28 02:58:52,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:52,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:52,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:52,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:52,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:52,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:52,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 135 transitions, 1227 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:52,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:52,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:52,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:52,655 INFO L124 PetriNetUnfolderBase]: 405/727 cut-off events. [2024-06-28 02:58:52,655 INFO L125 PetriNetUnfolderBase]: For 37562/37562 co-relation queries the response was YES. [2024-06-28 02:58:52,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5030 conditions, 727 events. 405/727 cut-off events. For 37562/37562 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3247 event pairs, 72 based on Foata normal form. 2/727 useless extension candidates. Maximal degree in co-relation 4953. Up to 612 conditions per place. [2024-06-28 02:58:52,659 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 123 selfloop transitions, 37 changer transitions 0/162 dead transitions. [2024-06-28 02:58:52,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 162 transitions, 1793 flow [2024-06-28 02:58:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:58:52,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-28 02:58:52,660 INFO L175 Difference]: Start difference. First operand has 159 places, 135 transitions, 1227 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:58:52,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 162 transitions, 1793 flow [2024-06-28 02:58:52,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 162 transitions, 1726 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:52,736 INFO L231 Difference]: Finished difference. Result has 163 places, 141 transitions, 1346 flow [2024-06-28 02:58:52,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1346, PETRI_PLACES=163, PETRI_TRANSITIONS=141} [2024-06-28 02:58:52,736 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-28 02:58:52,736 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 141 transitions, 1346 flow [2024-06-28 02:58:52,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:52,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:52,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:52,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:58:52,737 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)] === [2024-06-28 02:58:52,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash 959060878, now seen corresponding path program 3 times [2024-06-28 02:58:52,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:52,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021453311] [2024-06-28 02:58:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:52,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:53,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:53,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021453311] [2024-06-28 02:58:53,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021453311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:53,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:53,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:53,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163005808] [2024-06-28 02:58:53,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:53,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:53,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:53,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:53,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:53,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:53,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 141 transitions, 1346 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:53,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:53,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:53,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:54,184 INFO L124 PetriNetUnfolderBase]: 386/694 cut-off events. [2024-06-28 02:58:54,184 INFO L125 PetriNetUnfolderBase]: For 37480/37480 co-relation queries the response was YES. [2024-06-28 02:58:54,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4384 conditions, 694 events. 386/694 cut-off events. For 37480/37480 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3092 event pairs, 57 based on Foata normal form. 14/706 useless extension candidates. Maximal degree in co-relation 4305. Up to 534 conditions per place. [2024-06-28 02:58:54,189 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 118 selfloop transitions, 35 changer transitions 12/167 dead transitions. [2024-06-28 02:58:54,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 167 transitions, 1798 flow [2024-06-28 02:58:54,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:58:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:58:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 02:58:54,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 02:58:54,189 INFO L175 Difference]: Start difference. First operand has 163 places, 141 transitions, 1346 flow. Second operand 12 states and 140 transitions. [2024-06-28 02:58:54,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 167 transitions, 1798 flow [2024-06-28 02:58:54,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 167 transitions, 1705 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:54,250 INFO L231 Difference]: Finished difference. Result has 169 places, 136 transitions, 1287 flow [2024-06-28 02:58:54,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1287, PETRI_PLACES=169, PETRI_TRANSITIONS=136} [2024-06-28 02:58:54,251 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-28 02:58:54,251 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 136 transitions, 1287 flow [2024-06-28 02:58:54,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:54,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:54,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:54,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:58:54,251 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)] === [2024-06-28 02:58:54,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:54,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2087255257, now seen corresponding path program 2 times [2024-06-28 02:58:54,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:54,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981219571] [2024-06-28 02:58:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:54,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:55,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:55,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981219571] [2024-06-28 02:58:55,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981219571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:55,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:55,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:55,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124822437] [2024-06-28 02:58:55,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:55,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:55,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:55,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:55,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:55,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:55,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 136 transitions, 1287 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:55,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:55,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:55,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:55,683 INFO L124 PetriNetUnfolderBase]: 361/643 cut-off events. [2024-06-28 02:58:55,683 INFO L125 PetriNetUnfolderBase]: For 26842/26842 co-relation queries the response was YES. [2024-06-28 02:58:55,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 643 events. 361/643 cut-off events. For 26842/26842 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2777 event pairs, 53 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 4080. Up to 562 conditions per place. [2024-06-28 02:58:55,687 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 124 selfloop transitions, 30 changer transitions 0/156 dead transitions. [2024-06-28 02:58:55,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 156 transitions, 1783 flow [2024-06-28 02:58:55,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:55,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:58:55,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 02:58:55,688 INFO L175 Difference]: Start difference. First operand has 169 places, 136 transitions, 1287 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:58:55,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 156 transitions, 1783 flow [2024-06-28 02:58:55,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 156 transitions, 1655 flow, removed 0 selfloop flow, removed 15 redundant places. [2024-06-28 02:58:55,750 INFO L231 Difference]: Finished difference. Result has 165 places, 140 transitions, 1285 flow [2024-06-28 02:58:55,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1285, PETRI_PLACES=165, PETRI_TRANSITIONS=140} [2024-06-28 02:58:55,751 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 136 predicate places. [2024-06-28 02:58:55,751 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 140 transitions, 1285 flow [2024-06-28 02:58:55,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:55,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:55,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:55,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:58:55,751 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)] === [2024-06-28 02:58:55,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:55,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1045896993, now seen corresponding path program 3 times [2024-06-28 02:58:55,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:55,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739672687] [2024-06-28 02:58:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:55,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:56,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739672687] [2024-06-28 02:58:56,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739672687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:56,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:56,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:56,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614335031] [2024-06-28 02:58:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:56,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:56,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:56,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:56,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:56,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:56,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 140 transitions, 1285 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:56,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:56,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:56,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:56,994 INFO L124 PetriNetUnfolderBase]: 357/637 cut-off events. [2024-06-28 02:58:56,995 INFO L125 PetriNetUnfolderBase]: For 25829/25829 co-relation queries the response was YES. [2024-06-28 02:58:56,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3991 conditions, 637 events. 357/637 cut-off events. For 25829/25829 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2753 event pairs, 52 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 3909. Up to 575 conditions per place. [2024-06-28 02:58:56,999 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 124 selfloop transitions, 28 changer transitions 0/154 dead transitions. [2024-06-28 02:58:56,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 154 transitions, 1625 flow [2024-06-28 02:58:56,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:58:57,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 02:58:57,000 INFO L175 Difference]: Start difference. First operand has 165 places, 140 transitions, 1285 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:58:57,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 154 transitions, 1625 flow [2024-06-28 02:58:57,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 154 transitions, 1519 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:57,060 INFO L231 Difference]: Finished difference. Result has 168 places, 140 transitions, 1240 flow [2024-06-28 02:58:57,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1240, PETRI_PLACES=168, PETRI_TRANSITIONS=140} [2024-06-28 02:58:57,060 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-28 02:58:57,060 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 140 transitions, 1240 flow [2024-06-28 02:58:57,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:57,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:57,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:57,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:58:57,061 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)] === [2024-06-28 02:58:57,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash 330525737, now seen corresponding path program 4 times [2024-06-28 02:58:57,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:57,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499322515] [2024-06-28 02:58:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:57,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:57,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:57,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499322515] [2024-06-28 02:58:57,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499322515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:57,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:57,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:57,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342473916] [2024-06-28 02:58:57,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:57,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:57,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:57,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:58,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:58,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 140 transitions, 1240 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:58,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:58,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:58,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:58,414 INFO L124 PetriNetUnfolderBase]: 369/657 cut-off events. [2024-06-28 02:58:58,415 INFO L125 PetriNetUnfolderBase]: For 26623/26623 co-relation queries the response was YES. [2024-06-28 02:58:58,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4048 conditions, 657 events. 369/657 cut-off events. For 26623/26623 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2849 event pairs, 43 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 3965. Up to 483 conditions per place. [2024-06-28 02:58:58,419 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 104 selfloop transitions, 53 changer transitions 0/159 dead transitions. [2024-06-28 02:58:58,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 159 transitions, 1639 flow [2024-06-28 02:58:58,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 02:58:58,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 02:58:58,420 INFO L175 Difference]: Start difference. First operand has 168 places, 140 transitions, 1240 flow. Second operand 10 states and 120 transitions. [2024-06-28 02:58:58,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 159 transitions, 1639 flow [2024-06-28 02:58:58,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 159 transitions, 1543 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 02:58:58,488 INFO L231 Difference]: Finished difference. Result has 166 places, 144 transitions, 1302 flow [2024-06-28 02:58:58,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1302, PETRI_PLACES=166, PETRI_TRANSITIONS=144} [2024-06-28 02:58:58,489 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 137 predicate places. [2024-06-28 02:58:58,489 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 144 transitions, 1302 flow [2024-06-28 02:58:58,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:58,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:58,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:58,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:58:58,489 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)] === [2024-06-28 02:58:58,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:58,490 INFO L85 PathProgramCache]: Analyzing trace with hash 330533673, now seen corresponding path program 1 times [2024-06-28 02:58:58,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:58,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099142472] [2024-06-28 02:58:58,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:58,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:59,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:59,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099142472] [2024-06-28 02:58:59,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099142472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:59,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:59,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:59,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864292908] [2024-06-28 02:58:59,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:59,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:59,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:59,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:58:59,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 144 transitions, 1302 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:59,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:59,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:58:59,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:59,778 INFO L124 PetriNetUnfolderBase]: 373/665 cut-off events. [2024-06-28 02:58:59,779 INFO L125 PetriNetUnfolderBase]: For 27867/27867 co-relation queries the response was YES. [2024-06-28 02:58:59,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 665 events. 373/665 cut-off events. For 27867/27867 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2940 event pairs, 41 based on Foata normal form. 2/665 useless extension candidates. Maximal degree in co-relation 4036. Up to 594 conditions per place. [2024-06-28 02:58:59,782 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 132 selfloop transitions, 26 changer transitions 0/160 dead transitions. [2024-06-28 02:58:59,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 160 transitions, 1674 flow [2024-06-28 02:58:59,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:59,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 02:58:59,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 02:58:59,783 INFO L175 Difference]: Start difference. First operand has 166 places, 144 transitions, 1302 flow. Second operand 9 states and 105 transitions. [2024-06-28 02:58:59,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 160 transitions, 1674 flow [2024-06-28 02:58:59,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 160 transitions, 1541 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:59,848 INFO L231 Difference]: Finished difference. Result has 168 places, 146 transitions, 1250 flow [2024-06-28 02:58:59,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1250, PETRI_PLACES=168, PETRI_TRANSITIONS=146} [2024-06-28 02:58:59,849 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-28 02:58:59,849 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 146 transitions, 1250 flow [2024-06-28 02:58:59,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:59,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:59,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:59,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:58:59,849 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)] === [2024-06-28 02:58:59,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash 330323927, now seen corresponding path program 5 times [2024-06-28 02:58:59,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:59,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391742979] [2024-06-28 02:58:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:59,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:00,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:00,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391742979] [2024-06-28 02:59:00,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391742979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:00,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:00,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839062438] [2024-06-28 02:59:00,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:00,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:00,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:00,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:00,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:00,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:00,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 146 transitions, 1250 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:00,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:00,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:00,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:01,226 INFO L124 PetriNetUnfolderBase]: 369/659 cut-off events. [2024-06-28 02:59:01,226 INFO L125 PetriNetUnfolderBase]: For 26443/26443 co-relation queries the response was YES. [2024-06-28 02:59:01,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 659 events. 369/659 cut-off events. For 26443/26443 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2899 event pairs, 43 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 3834. Up to 485 conditions per place. [2024-06-28 02:59:01,231 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 107 selfloop transitions, 53 changer transitions 0/162 dead transitions. [2024-06-28 02:59:01,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 162 transitions, 1616 flow [2024-06-28 02:59:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:59:01,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-06-28 02:59:01,233 INFO L175 Difference]: Start difference. First operand has 168 places, 146 transitions, 1250 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:59:01,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 162 transitions, 1616 flow [2024-06-28 02:59:01,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 162 transitions, 1546 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:01,303 INFO L231 Difference]: Finished difference. Result has 172 places, 146 transitions, 1291 flow [2024-06-28 02:59:01,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1291, PETRI_PLACES=172, PETRI_TRANSITIONS=146} [2024-06-28 02:59:01,304 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2024-06-28 02:59:01,304 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 146 transitions, 1291 flow [2024-06-28 02:59:01,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:01,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:01,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:01,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:59:01,304 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)] === [2024-06-28 02:59:01,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:01,305 INFO L85 PathProgramCache]: Analyzing trace with hash 330318347, now seen corresponding path program 6 times [2024-06-28 02:59:01,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:01,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569072958] [2024-06-28 02:59:01,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:01,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:02,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:02,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569072958] [2024-06-28 02:59:02,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569072958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:02,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:02,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:02,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289856086] [2024-06-28 02:59:02,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:02,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:02,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:02,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:02,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 146 transitions, 1291 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:02,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:02,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:02,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:02,518 INFO L124 PetriNetUnfolderBase]: 375/669 cut-off events. [2024-06-28 02:59:02,519 INFO L125 PetriNetUnfolderBase]: For 27803/27803 co-relation queries the response was YES. [2024-06-28 02:59:02,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4046 conditions, 669 events. 375/669 cut-off events. For 27803/27803 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2952 event pairs, 43 based on Foata normal form. 2/669 useless extension candidates. Maximal degree in co-relation 3964. Up to 478 conditions per place. [2024-06-28 02:59:02,523 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 105 selfloop transitions, 59 changer transitions 0/166 dead transitions. [2024-06-28 02:59:02,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 166 transitions, 1713 flow [2024-06-28 02:59:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:02,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:59:02,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-28 02:59:02,524 INFO L175 Difference]: Start difference. First operand has 172 places, 146 transitions, 1291 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:59:02,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 166 transitions, 1713 flow [2024-06-28 02:59:02,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 166 transitions, 1586 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:02,594 INFO L231 Difference]: Finished difference. Result has 174 places, 148 transitions, 1333 flow [2024-06-28 02:59:02,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1333, PETRI_PLACES=174, PETRI_TRANSITIONS=148} [2024-06-28 02:59:02,594 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-06-28 02:59:02,594 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 148 transitions, 1333 flow [2024-06-28 02:59:02,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:02,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:02,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:02,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:59:02,595 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)] === [2024-06-28 02:59:02,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:02,595 INFO L85 PathProgramCache]: Analyzing trace with hash 330318192, now seen corresponding path program 4 times [2024-06-28 02:59:02,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:02,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626930] [2024-06-28 02:59:02,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:02,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:03,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:03,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626930] [2024-06-28 02:59:03,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:03,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:03,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:03,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361851116] [2024-06-28 02:59:03,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:03,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:03,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:03,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:03,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:03,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:03,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 148 transitions, 1333 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:03,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:03,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:03,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:03,806 INFO L124 PetriNetUnfolderBase]: 399/721 cut-off events. [2024-06-28 02:59:03,806 INFO L125 PetriNetUnfolderBase]: For 44579/44579 co-relation queries the response was YES. [2024-06-28 02:59:03,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 721 events. 399/721 cut-off events. For 44579/44579 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3276 event pairs, 47 based on Foata normal form. 14/733 useless extension candidates. Maximal degree in co-relation 4243. Up to 470 conditions per place. [2024-06-28 02:59:03,813 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 103 selfloop transitions, 48 changer transitions 17/170 dead transitions. [2024-06-28 02:59:03,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 170 transitions, 1793 flow [2024-06-28 02:59:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:59:03,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2024-06-28 02:59:03,814 INFO L175 Difference]: Start difference. First operand has 174 places, 148 transitions, 1333 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:59:03,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 170 transitions, 1793 flow [2024-06-28 02:59:03,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 170 transitions, 1640 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:03,894 INFO L231 Difference]: Finished difference. Result has 175 places, 139 transitions, 1230 flow [2024-06-28 02:59:03,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1230, PETRI_PLACES=175, PETRI_TRANSITIONS=139} [2024-06-28 02:59:03,894 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-28 02:59:03,894 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 139 transitions, 1230 flow [2024-06-28 02:59:03,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:03,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:03,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:03,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:59:03,895 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)] === [2024-06-28 02:59:03,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:03,895 INFO L85 PathProgramCache]: Analyzing trace with hash 324955812, now seen corresponding path program 5 times [2024-06-28 02:59:03,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:03,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017997691] [2024-06-28 02:59:03,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:03,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:04,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:04,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017997691] [2024-06-28 02:59:04,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017997691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:04,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:04,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:04,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099896890] [2024-06-28 02:59:04,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:04,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:04,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:04,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:04,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:04,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:04,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 139 transitions, 1230 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:04,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:04,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:04,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:05,148 INFO L124 PetriNetUnfolderBase]: 376/688 cut-off events. [2024-06-28 02:59:05,148 INFO L125 PetriNetUnfolderBase]: For 45944/45944 co-relation queries the response was YES. [2024-06-28 02:59:05,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 688 events. 376/688 cut-off events. For 45944/45944 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3125 event pairs, 51 based on Foata normal form. 14/700 useless extension candidates. Maximal degree in co-relation 4064. Up to 467 conditions per place. [2024-06-28 02:59:05,153 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 107 selfloop transitions, 43 changer transitions 11/163 dead transitions. [2024-06-28 02:59:05,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 163 transitions, 1688 flow [2024-06-28 02:59:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:05,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:59:05,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2024-06-28 02:59:05,154 INFO L175 Difference]: Start difference. First operand has 175 places, 139 transitions, 1230 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:59:05,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 163 transitions, 1688 flow [2024-06-28 02:59:05,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 163 transitions, 1576 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:05,230 INFO L231 Difference]: Finished difference. Result has 172 places, 138 transitions, 1216 flow [2024-06-28 02:59:05,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1216, PETRI_PLACES=172, PETRI_TRANSITIONS=138} [2024-06-28 02:59:05,230 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2024-06-28 02:59:05,231 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 138 transitions, 1216 flow [2024-06-28 02:59:05,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:05,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:05,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:05,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:59:05,231 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)] === [2024-06-28 02:59:05,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash 324807942, now seen corresponding path program 6 times [2024-06-28 02:59:05,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:05,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097197094] [2024-06-28 02:59:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:05,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:05,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:05,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097197094] [2024-06-28 02:59:05,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097197094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:05,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:05,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:05,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103607411] [2024-06-28 02:59:05,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:05,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:05,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:05,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:06,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:06,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 138 transitions, 1216 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:06,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:06,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:06,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:06,321 INFO L124 PetriNetUnfolderBase]: 353/643 cut-off events. [2024-06-28 02:59:06,321 INFO L125 PetriNetUnfolderBase]: For 31578/31578 co-relation queries the response was YES. [2024-06-28 02:59:06,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4061 conditions, 643 events. 353/643 cut-off events. For 31578/31578 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2882 event pairs, 44 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 3977. Up to 494 conditions per place. [2024-06-28 02:59:06,325 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 110 selfloop transitions, 44 changer transitions 0/156 dead transitions. [2024-06-28 02:59:06,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 156 transitions, 1712 flow [2024-06-28 02:59:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 02:59:06,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-28 02:59:06,327 INFO L175 Difference]: Start difference. First operand has 172 places, 138 transitions, 1216 flow. Second operand 10 states and 117 transitions. [2024-06-28 02:59:06,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 156 transitions, 1712 flow [2024-06-28 02:59:06,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 156 transitions, 1592 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 02:59:06,408 INFO L231 Difference]: Finished difference. Result has 171 places, 140 transitions, 1230 flow [2024-06-28 02:59:06,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1230, PETRI_PLACES=171, PETRI_TRANSITIONS=140} [2024-06-28 02:59:06,408 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-06-28 02:59:06,409 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 140 transitions, 1230 flow [2024-06-28 02:59:06,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:06,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:06,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:06,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:59:06,409 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)] === [2024-06-28 02:59:06,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:06,410 INFO L85 PathProgramCache]: Analyzing trace with hash 324955967, now seen corresponding path program 7 times [2024-06-28 02:59:06,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:06,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552121866] [2024-06-28 02:59:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:06,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:07,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:07,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552121866] [2024-06-28 02:59:07,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552121866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:07,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:07,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:07,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962829871] [2024-06-28 02:59:07,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:07,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:07,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:07,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:07,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:07,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:07,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 140 transitions, 1230 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:07,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:07,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:07,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:07,610 INFO L124 PetriNetUnfolderBase]: 359/653 cut-off events. [2024-06-28 02:59:07,610 INFO L125 PetriNetUnfolderBase]: For 32966/32966 co-relation queries the response was YES. [2024-06-28 02:59:07,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4133 conditions, 653 events. 359/653 cut-off events. For 32966/32966 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2907 event pairs, 48 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4050. Up to 498 conditions per place. [2024-06-28 02:59:07,615 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 110 selfloop transitions, 44 changer transitions 0/156 dead transitions. [2024-06-28 02:59:07,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 156 transitions, 1622 flow [2024-06-28 02:59:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 02:59:07,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-28 02:59:07,616 INFO L175 Difference]: Start difference. First operand has 171 places, 140 transitions, 1230 flow. Second operand 10 states and 118 transitions. [2024-06-28 02:59:07,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 156 transitions, 1622 flow [2024-06-28 02:59:07,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 156 transitions, 1511 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:07,697 INFO L231 Difference]: Finished difference. Result has 173 places, 142 transitions, 1262 flow [2024-06-28 02:59:07,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1262, PETRI_PLACES=173, PETRI_TRANSITIONS=142} [2024-06-28 02:59:07,697 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-28 02:59:07,697 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 142 transitions, 1262 flow [2024-06-28 02:59:07,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:07,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:07,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:07,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:59:07,698 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)] === [2024-06-28 02:59:07,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash 324811817, now seen corresponding path program 8 times [2024-06-28 02:59:07,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:07,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312721253] [2024-06-28 02:59:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:07,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:08,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:08,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312721253] [2024-06-28 02:59:08,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312721253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:08,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:08,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293427836] [2024-06-28 02:59:08,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:08,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:08,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:08,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:08,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 142 transitions, 1262 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:08,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:08,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:08,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:08,833 INFO L124 PetriNetUnfolderBase]: 365/663 cut-off events. [2024-06-28 02:59:08,834 INFO L125 PetriNetUnfolderBase]: For 34026/34026 co-relation queries the response was YES. [2024-06-28 02:59:08,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 663 events. 365/663 cut-off events. For 34026/34026 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2979 event pairs, 48 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 4125. Up to 487 conditions per place. [2024-06-28 02:59:08,840 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 105 selfloop transitions, 53 changer transitions 0/160 dead transitions. [2024-06-28 02:59:08,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 160 transitions, 1672 flow [2024-06-28 02:59:08,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:59:08,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 02:59:08,841 INFO L175 Difference]: Start difference. First operand has 173 places, 142 transitions, 1262 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:59:08,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 160 transitions, 1672 flow [2024-06-28 02:59:08,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 160 transitions, 1545 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:08,930 INFO L231 Difference]: Finished difference. Result has 176 places, 144 transitions, 1303 flow [2024-06-28 02:59:08,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1303, PETRI_PLACES=176, PETRI_TRANSITIONS=144} [2024-06-28 02:59:08,931 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-06-28 02:59:08,931 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 144 transitions, 1303 flow [2024-06-28 02:59:08,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:08,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:08,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:08,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:59:08,931 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)] === [2024-06-28 02:59:08,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:08,931 INFO L85 PathProgramCache]: Analyzing trace with hash 324811662, now seen corresponding path program 7 times [2024-06-28 02:59:08,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:08,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949345737] [2024-06-28 02:59:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:08,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:09,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:09,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949345737] [2024-06-28 02:59:09,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949345737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:09,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:09,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:09,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231931085] [2024-06-28 02:59:09,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:09,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:09,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:09,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:09,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:09,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:09,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 144 transitions, 1303 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:09,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:09,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:09,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:10,113 INFO L124 PetriNetUnfolderBase]: 362/658 cut-off events. [2024-06-28 02:59:10,113 INFO L125 PetriNetUnfolderBase]: For 32141/32141 co-relation queries the response was YES. [2024-06-28 02:59:10,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4100 conditions, 658 events. 362/658 cut-off events. For 32141/32141 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2953 event pairs, 47 based on Foata normal form. 2/658 useless extension candidates. Maximal degree in co-relation 4016. Up to 488 conditions per place. [2024-06-28 02:59:10,118 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 107 selfloop transitions, 50 changer transitions 0/159 dead transitions. [2024-06-28 02:59:10,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 159 transitions, 1655 flow [2024-06-28 02:59:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:59:10,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-28 02:59:10,119 INFO L175 Difference]: Start difference. First operand has 176 places, 144 transitions, 1303 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:59:10,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 159 transitions, 1655 flow [2024-06-28 02:59:10,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 159 transitions, 1501 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:10,211 INFO L231 Difference]: Finished difference. Result has 178 places, 144 transitions, 1255 flow [2024-06-28 02:59:10,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1255, PETRI_PLACES=178, PETRI_TRANSITIONS=144} [2024-06-28 02:59:10,211 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2024-06-28 02:59:10,212 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 144 transitions, 1255 flow [2024-06-28 02:59:10,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:10,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:10,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:10,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:59:10,212 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)] === [2024-06-28 02:59:10,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1699071213, now seen corresponding path program 2 times [2024-06-28 02:59:10,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:10,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333543691] [2024-06-28 02:59:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:10,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:11,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:11,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333543691] [2024-06-28 02:59:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333543691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:11,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:11,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:11,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627645892] [2024-06-28 02:59:11,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:11,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:11,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:11,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:11,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:11,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 144 transitions, 1255 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:11,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:11,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:11,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:11,498 INFO L124 PetriNetUnfolderBase]: 366/666 cut-off events. [2024-06-28 02:59:11,498 INFO L125 PetriNetUnfolderBase]: For 31656/31656 co-relation queries the response was YES. [2024-06-28 02:59:11,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 666 events. 366/666 cut-off events. For 31656/31656 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3003 event pairs, 54 based on Foata normal form. 2/666 useless extension candidates. Maximal degree in co-relation 3956. Up to 627 conditions per place. [2024-06-28 02:59:11,503 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 136 selfloop transitions, 17 changer transitions 0/155 dead transitions. [2024-06-28 02:59:11,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 155 transitions, 1595 flow [2024-06-28 02:59:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:59:11,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 02:59:11,504 INFO L175 Difference]: Start difference. First operand has 178 places, 144 transitions, 1255 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:59:11,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 155 transitions, 1595 flow [2024-06-28 02:59:11,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 155 transitions, 1489 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:11,586 INFO L231 Difference]: Finished difference. Result has 177 places, 145 transitions, 1200 flow [2024-06-28 02:59:11,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1200, PETRI_PLACES=177, PETRI_TRANSITIONS=145} [2024-06-28 02:59:11,586 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 148 predicate places. [2024-06-28 02:59:11,586 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 145 transitions, 1200 flow [2024-06-28 02:59:11,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:11,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:11,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:11,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:59:11,587 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)] === [2024-06-28 02:59:11,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1776504564, now seen corresponding path program 1 times [2024-06-28 02:59:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:11,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329420805] [2024-06-28 02:59:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:11,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:12,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:12,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329420805] [2024-06-28 02:59:12,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329420805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:12,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:12,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:12,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395854781] [2024-06-28 02:59:12,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:12,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:12,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:12,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:12,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:12,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:12,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 145 transitions, 1200 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:12,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:12,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:12,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:12,776 INFO L124 PetriNetUnfolderBase]: 364/663 cut-off events. [2024-06-28 02:59:12,777 INFO L125 PetriNetUnfolderBase]: For 29889/29889 co-relation queries the response was YES. [2024-06-28 02:59:12,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3909 conditions, 663 events. 364/663 cut-off events. For 29889/29889 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2990 event pairs, 52 based on Foata normal form. 1/662 useless extension candidates. Maximal degree in co-relation 3823. Up to 621 conditions per place. [2024-06-28 02:59:12,782 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 135 selfloop transitions, 20 changer transitions 0/157 dead transitions. [2024-06-28 02:59:12,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 157 transitions, 1576 flow [2024-06-28 02:59:12,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 02:59:12,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-28 02:59:12,784 INFO L175 Difference]: Start difference. First operand has 177 places, 145 transitions, 1200 flow. Second operand 9 states and 98 transitions. [2024-06-28 02:59:12,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 157 transitions, 1576 flow [2024-06-28 02:59:12,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 157 transitions, 1537 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:12,858 INFO L231 Difference]: Finished difference. Result has 179 places, 147 transitions, 1253 flow [2024-06-28 02:59:12,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1253, PETRI_PLACES=179, PETRI_TRANSITIONS=147} [2024-06-28 02:59:12,858 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-28 02:59:12,859 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 147 transitions, 1253 flow [2024-06-28 02:59:12,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:12,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:12,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:12,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:59:12,859 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)] === [2024-06-28 02:59:12,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:12,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1968206430, now seen corresponding path program 8 times [2024-06-28 02:59:12,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:12,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843365905] [2024-06-28 02:59:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:12,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:13,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:13,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843365905] [2024-06-28 02:59:13,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843365905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:13,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:13,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:13,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935930186] [2024-06-28 02:59:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:13,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:13,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:13,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:13,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:13,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 147 transitions, 1253 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:13,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:13,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:13,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:14,013 INFO L124 PetriNetUnfolderBase]: 371/676 cut-off events. [2024-06-28 02:59:14,013 INFO L125 PetriNetUnfolderBase]: For 32189/32189 co-relation queries the response was YES. [2024-06-28 02:59:14,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 676 events. 371/676 cut-off events. For 32189/32189 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3065 event pairs, 49 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 3926. Up to 630 conditions per place. [2024-06-28 02:59:14,018 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 140 selfloop transitions, 22 changer transitions 0/164 dead transitions. [2024-06-28 02:59:14,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 164 transitions, 1651 flow [2024-06-28 02:59:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:59:14,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-28 02:59:14,020 INFO L175 Difference]: Start difference. First operand has 179 places, 147 transitions, 1253 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:59:14,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 164 transitions, 1651 flow [2024-06-28 02:59:14,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 164 transitions, 1579 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:14,104 INFO L231 Difference]: Finished difference. Result has 184 places, 154 transitions, 1300 flow [2024-06-28 02:59:14,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1300, PETRI_PLACES=184, PETRI_TRANSITIONS=154} [2024-06-28 02:59:14,105 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-28 02:59:14,105 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 154 transitions, 1300 flow [2024-06-28 02:59:14,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:14,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:14,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:14,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:59:14,106 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)] === [2024-06-28 02:59:14,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:14,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1776831273, now seen corresponding path program 3 times [2024-06-28 02:59:14,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:14,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340593571] [2024-06-28 02:59:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:14,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:14,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:14,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340593571] [2024-06-28 02:59:14,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340593571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:14,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:14,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:14,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769181146] [2024-06-28 02:59:14,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:14,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:14,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:14,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:14,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:15,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:15,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 154 transitions, 1300 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:15,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:15,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:15,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:15,320 INFO L124 PetriNetUnfolderBase]: 375/684 cut-off events. [2024-06-28 02:59:15,320 INFO L125 PetriNetUnfolderBase]: For 32458/32458 co-relation queries the response was YES. [2024-06-28 02:59:15,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4057 conditions, 684 events. 375/684 cut-off events. For 32458/32458 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3114 event pairs, 50 based on Foata normal form. 2/684 useless extension candidates. Maximal degree in co-relation 3967. Up to 648 conditions per place. [2024-06-28 02:59:15,324 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 149 selfloop transitions, 14 changer transitions 0/165 dead transitions. [2024-06-28 02:59:15,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 165 transitions, 1660 flow [2024-06-28 02:59:15,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:15,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 02:59:15,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 02:59:15,324 INFO L175 Difference]: Start difference. First operand has 184 places, 154 transitions, 1300 flow. Second operand 9 states and 95 transitions. [2024-06-28 02:59:15,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 165 transitions, 1660 flow [2024-06-28 02:59:15,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 165 transitions, 1602 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:15,408 INFO L231 Difference]: Finished difference. Result has 188 places, 155 transitions, 1288 flow [2024-06-28 02:59:15,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1288, PETRI_PLACES=188, PETRI_TRANSITIONS=155} [2024-06-28 02:59:15,409 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-28 02:59:15,409 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 155 transitions, 1288 flow [2024-06-28 02:59:15,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:15,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:15,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:15,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:59:15,410 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)] === [2024-06-28 02:59:15,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1510807563, now seen corresponding path program 4 times [2024-06-28 02:59:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:15,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258573974] [2024-06-28 02:59:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:16,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:16,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258573974] [2024-06-28 02:59:16,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258573974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:16,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:16,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:16,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801603919] [2024-06-28 02:59:16,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:16,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:16,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:16,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:16,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:16,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:16,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 155 transitions, 1288 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:16,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:16,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:16,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:16,701 INFO L124 PetriNetUnfolderBase]: 379/692 cut-off events. [2024-06-28 02:59:16,701 INFO L125 PetriNetUnfolderBase]: For 33474/33474 co-relation queries the response was YES. [2024-06-28 02:59:16,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 692 events. 379/692 cut-off events. For 33474/33474 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3168 event pairs, 49 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 3992. Up to 661 conditions per place. [2024-06-28 02:59:16,706 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 151 selfloop transitions, 14 changer transitions 0/167 dead transitions. [2024-06-28 02:59:16,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 167 transitions, 1662 flow [2024-06-28 02:59:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:16,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 02:59:16,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 02:59:16,707 INFO L175 Difference]: Start difference. First operand has 188 places, 155 transitions, 1288 flow. Second operand 9 states and 96 transitions. [2024-06-28 02:59:16,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 167 transitions, 1662 flow [2024-06-28 02:59:16,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 167 transitions, 1626 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:16,791 INFO L231 Difference]: Finished difference. Result has 191 places, 157 transitions, 1311 flow [2024-06-28 02:59:16,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1311, PETRI_PLACES=191, PETRI_TRANSITIONS=157} [2024-06-28 02:59:16,792 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-28 02:59:16,792 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 157 transitions, 1311 flow [2024-06-28 02:59:16,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:16,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:16,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:16,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:59:16,793 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)] === [2024-06-28 02:59:16,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:16,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1767300137, now seen corresponding path program 9 times [2024-06-28 02:59:16,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:16,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885376207] [2024-06-28 02:59:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:16,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:17,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:17,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885376207] [2024-06-28 02:59:17,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885376207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:17,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:17,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:17,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887898444] [2024-06-28 02:59:17,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:17,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:17,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:17,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:17,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:17,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 157 transitions, 1311 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:17,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:17,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:17,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:18,047 INFO L124 PetriNetUnfolderBase]: 385/702 cut-off events. [2024-06-28 02:59:18,048 INFO L125 PetriNetUnfolderBase]: For 35002/35002 co-relation queries the response was YES. [2024-06-28 02:59:18,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4191 conditions, 702 events. 385/702 cut-off events. For 35002/35002 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3228 event pairs, 46 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 4098. Up to 650 conditions per place. [2024-06-28 02:59:18,053 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 147 selfloop transitions, 22 changer transitions 0/171 dead transitions. [2024-06-28 02:59:18,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 171 transitions, 1731 flow [2024-06-28 02:59:18,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:18,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:18,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:59:18,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-28 02:59:18,054 INFO L175 Difference]: Start difference. First operand has 191 places, 157 transitions, 1311 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:59:18,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 171 transitions, 1731 flow [2024-06-28 02:59:18,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 171 transitions, 1693 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:18,139 INFO L231 Difference]: Finished difference. Result has 195 places, 159 transitions, 1377 flow [2024-06-28 02:59:18,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1377, PETRI_PLACES=195, PETRI_TRANSITIONS=159} [2024-06-28 02:59:18,139 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-28 02:59:18,139 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 159 transitions, 1377 flow [2024-06-28 02:59:18,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:18,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:18,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:18,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:59:18,140 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)] === [2024-06-28 02:59:18,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:18,140 INFO L85 PathProgramCache]: Analyzing trace with hash -719005591, now seen corresponding path program 10 times [2024-06-28 02:59:18,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:18,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299138540] [2024-06-28 02:59:18,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:18,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:18,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:18,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299138540] [2024-06-28 02:59:18,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299138540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:18,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:18,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:18,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648248513] [2024-06-28 02:59:18,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:18,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:18,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:18,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:19,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:19,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 159 transitions, 1377 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:19,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:19,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:19,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:19,476 INFO L124 PetriNetUnfolderBase]: 391/712 cut-off events. [2024-06-28 02:59:19,476 INFO L125 PetriNetUnfolderBase]: For 36625/36625 co-relation queries the response was YES. [2024-06-28 02:59:19,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4325 conditions, 712 events. 391/712 cut-off events. For 36625/36625 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3288 event pairs, 42 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 4231. Up to 620 conditions per place. [2024-06-28 02:59:19,481 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 142 selfloop transitions, 33 changer transitions 0/177 dead transitions. [2024-06-28 02:59:19,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 177 transitions, 1830 flow [2024-06-28 02:59:19,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:19,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:59:19,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-28 02:59:19,482 INFO L175 Difference]: Start difference. First operand has 195 places, 159 transitions, 1377 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:59:19,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 177 transitions, 1830 flow [2024-06-28 02:59:19,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 177 transitions, 1744 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:19,567 INFO L231 Difference]: Finished difference. Result has 199 places, 162 transitions, 1435 flow [2024-06-28 02:59:19,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1435, PETRI_PLACES=199, PETRI_TRANSITIONS=162} [2024-06-28 02:59:19,567 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-28 02:59:19,567 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 162 transitions, 1435 flow [2024-06-28 02:59:19,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:19,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:19,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:19,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:59:19,568 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)] === [2024-06-28 02:59:19,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash 958747682, now seen corresponding path program 9 times [2024-06-28 02:59:19,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:19,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274321956] [2024-06-28 02:59:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:19,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:20,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:20,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274321956] [2024-06-28 02:59:20,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274321956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:20,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201196302] [2024-06-28 02:59:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:20,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:20,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:20,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 162 transitions, 1435 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:20,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:20,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:20,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:20,791 INFO L124 PetriNetUnfolderBase]: 415/764 cut-off events. [2024-06-28 02:59:20,792 INFO L125 PetriNetUnfolderBase]: For 59202/59202 co-relation queries the response was YES. [2024-06-28 02:59:20,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 764 events. 415/764 cut-off events. For 59202/59202 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3611 event pairs, 48 based on Foata normal form. 14/776 useless extension candidates. Maximal degree in co-relation 4530. Up to 586 conditions per place. [2024-06-28 02:59:20,797 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 132 selfloop transitions, 38 changer transitions 12/184 dead transitions. [2024-06-28 02:59:20,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 184 transitions, 1939 flow [2024-06-28 02:59:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:20,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:20,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:59:20,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 02:59:20,799 INFO L175 Difference]: Start difference. First operand has 199 places, 162 transitions, 1435 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:59:20,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 184 transitions, 1939 flow [2024-06-28 02:59:20,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 184 transitions, 1829 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:20,915 INFO L231 Difference]: Finished difference. Result has 202 places, 158 transitions, 1390 flow [2024-06-28 02:59:20,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1390, PETRI_PLACES=202, PETRI_TRANSITIONS=158} [2024-06-28 02:59:20,915 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-28 02:59:20,915 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 158 transitions, 1390 flow [2024-06-28 02:59:20,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:20,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:20,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:20,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:59:20,916 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)] === [2024-06-28 02:59:20,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1510592082, now seen corresponding path program 10 times [2024-06-28 02:59:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:20,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627634582] [2024-06-28 02:59:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:20,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627634582] [2024-06-28 02:59:21,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627634582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:21,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:21,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:21,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654185516] [2024-06-28 02:59:21,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:21,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:21,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:21,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:21,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:21,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 158 transitions, 1390 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:21,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:21,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:21,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:22,102 INFO L124 PetriNetUnfolderBase]: 385/706 cut-off events. [2024-06-28 02:59:22,102 INFO L125 PetriNetUnfolderBase]: For 38680/38680 co-relation queries the response was YES. [2024-06-28 02:59:22,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 706 events. 385/706 cut-off events. For 38680/38680 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3278 event pairs, 50 based on Foata normal form. 2/706 useless extension candidates. Maximal degree in co-relation 4242. Up to 675 conditions per place. [2024-06-28 02:59:22,107 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 153 selfloop transitions, 16 changer transitions 0/171 dead transitions. [2024-06-28 02:59:22,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 171 transitions, 1784 flow [2024-06-28 02:59:22,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 02:59:22,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 02:59:22,108 INFO L175 Difference]: Start difference. First operand has 202 places, 158 transitions, 1390 flow. Second operand 10 states and 104 transitions. [2024-06-28 02:59:22,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 171 transitions, 1784 flow [2024-06-28 02:59:22,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 171 transitions, 1680 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 02:59:22,198 INFO L231 Difference]: Finished difference. Result has 202 places, 161 transitions, 1368 flow [2024-06-28 02:59:22,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1368, PETRI_PLACES=202, PETRI_TRANSITIONS=161} [2024-06-28 02:59:22,199 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-28 02:59:22,199 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 161 transitions, 1368 flow [2024-06-28 02:59:22,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:22,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:22,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:22,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:59:22,199 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)] === [2024-06-28 02:59:22,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:22,199 INFO L85 PathProgramCache]: Analyzing trace with hash -719153616, now seen corresponding path program 11 times [2024-06-28 02:59:22,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:22,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715924600] [2024-06-28 02:59:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:22,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:22,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:22,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:22,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715924600] [2024-06-28 02:59:22,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715924600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:22,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:22,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106175821] [2024-06-28 02:59:22,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:22,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:22,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:22,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:22,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:23,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:23,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 161 transitions, 1368 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:23,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:23,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:23,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:23,389 INFO L124 PetriNetUnfolderBase]: 425/786 cut-off events. [2024-06-28 02:59:23,389 INFO L125 PetriNetUnfolderBase]: For 60846/60846 co-relation queries the response was YES. [2024-06-28 02:59:23,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 786 events. 425/786 cut-off events. For 60846/60846 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3721 event pairs, 58 based on Foata normal form. 2/786 useless extension candidates. Maximal degree in co-relation 5288. Up to 557 conditions per place. [2024-06-28 02:59:23,394 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 139 selfloop transitions, 41 changer transitions 0/182 dead transitions. [2024-06-28 02:59:23,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 182 transitions, 1986 flow [2024-06-28 02:59:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:23,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:23,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 02:59:23,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033333333333333 [2024-06-28 02:59:23,395 INFO L175 Difference]: Start difference. First operand has 202 places, 161 transitions, 1368 flow. Second operand 10 states and 121 transitions. [2024-06-28 02:59:23,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 182 transitions, 1986 flow [2024-06-28 02:59:23,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 182 transitions, 1944 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:23,538 INFO L231 Difference]: Finished difference. Result has 206 places, 162 transitions, 1434 flow [2024-06-28 02:59:23,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1434, PETRI_PLACES=206, PETRI_TRANSITIONS=162} [2024-06-28 02:59:23,539 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2024-06-28 02:59:23,539 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 162 transitions, 1434 flow [2024-06-28 02:59:23,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:23,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:23,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:23,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:59:23,539 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)] === [2024-06-28 02:59:23,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:23,539 INFO L85 PathProgramCache]: Analyzing trace with hash -719149741, now seen corresponding path program 11 times [2024-06-28 02:59:23,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:23,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055429358] [2024-06-28 02:59:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:24,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:24,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055429358] [2024-06-28 02:59:24,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055429358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:24,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:24,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:24,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338024230] [2024-06-28 02:59:24,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:24,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:24,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:24,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:24,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:24,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:24,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 162 transitions, 1434 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:24,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:24,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:24,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:24,766 INFO L124 PetriNetUnfolderBase]: 431/796 cut-off events. [2024-06-28 02:59:24,766 INFO L125 PetriNetUnfolderBase]: For 63220/63220 co-relation queries the response was YES. [2024-06-28 02:59:24,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5568 conditions, 796 events. 431/796 cut-off events. For 63220/63220 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3784 event pairs, 64 based on Foata normal form. 2/796 useless extension candidates. Maximal degree in co-relation 5468. Up to 673 conditions per place. [2024-06-28 02:59:24,772 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 138 selfloop transitions, 41 changer transitions 0/181 dead transitions. [2024-06-28 02:59:24,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 181 transitions, 2072 flow [2024-06-28 02:59:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:59:24,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-28 02:59:24,773 INFO L175 Difference]: Start difference. First operand has 206 places, 162 transitions, 1434 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:59:24,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 181 transitions, 2072 flow [2024-06-28 02:59:24,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 181 transitions, 1947 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:24,935 INFO L231 Difference]: Finished difference. Result has 208 places, 166 transitions, 1519 flow [2024-06-28 02:59:24,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1519, PETRI_PLACES=208, PETRI_TRANSITIONS=166} [2024-06-28 02:59:24,936 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 179 predicate places. [2024-06-28 02:59:24,936 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 166 transitions, 1519 flow [2024-06-28 02:59:24,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:24,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:24,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:24,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:59:24,936 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)] === [2024-06-28 02:59:24,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1510592237, now seen corresponding path program 12 times [2024-06-28 02:59:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:24,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652995658] [2024-06-28 02:59:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:25,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:25,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652995658] [2024-06-28 02:59:25,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652995658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:25,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:25,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:25,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690345645] [2024-06-28 02:59:25,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:25,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:25,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:25,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:25,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:25,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 166 transitions, 1519 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:25,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:25,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:25,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:26,319 INFO L124 PetriNetUnfolderBase]: 443/816 cut-off events. [2024-06-28 02:59:26,319 INFO L125 PetriNetUnfolderBase]: For 65880/65880 co-relation queries the response was YES. [2024-06-28 02:59:26,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5685 conditions, 816 events. 443/816 cut-off events. For 65880/65880 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3902 event pairs, 66 based on Foata normal form. 2/816 useless extension candidates. Maximal degree in co-relation 5586. Up to 753 conditions per place. [2024-06-28 02:59:26,325 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 159 selfloop transitions, 24 changer transitions 0/185 dead transitions. [2024-06-28 02:59:26,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 185 transitions, 2011 flow [2024-06-28 02:59:26,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:59:26,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 02:59:26,326 INFO L175 Difference]: Start difference. First operand has 208 places, 166 transitions, 1519 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:59:26,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 185 transitions, 2011 flow [2024-06-28 02:59:26,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 185 transitions, 1895 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:26,474 INFO L231 Difference]: Finished difference. Result has 212 places, 170 transitions, 1544 flow [2024-06-28 02:59:26,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1544, PETRI_PLACES=212, PETRI_TRANSITIONS=170} [2024-06-28 02:59:26,474 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2024-06-28 02:59:26,474 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 170 transitions, 1544 flow [2024-06-28 02:59:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:26,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:26,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:26,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:59:26,475 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)] === [2024-06-28 02:59:26,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:26,476 INFO L85 PathProgramCache]: Analyzing trace with hash -713643211, now seen corresponding path program 13 times [2024-06-28 02:59:26,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:26,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113260823] [2024-06-28 02:59:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:26,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:27,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:27,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113260823] [2024-06-28 02:59:27,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113260823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:27,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:27,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:27,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583174118] [2024-06-28 02:59:27,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:27,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:27,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:27,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:27,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:27,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:27,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 170 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:27,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:27,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:27,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:27,798 INFO L124 PetriNetUnfolderBase]: 445/820 cut-off events. [2024-06-28 02:59:27,798 INFO L125 PetriNetUnfolderBase]: For 62928/62928 co-relation queries the response was YES. [2024-06-28 02:59:27,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5529 conditions, 820 events. 445/820 cut-off events. For 62928/62928 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3934 event pairs, 65 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 5428. Up to 722 conditions per place. [2024-06-28 02:59:27,805 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 154 selfloop transitions, 32 changer transitions 0/188 dead transitions. [2024-06-28 02:59:27,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 188 transitions, 1982 flow [2024-06-28 02:59:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:27,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:59:27,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-28 02:59:27,806 INFO L175 Difference]: Start difference. First operand has 212 places, 170 transitions, 1544 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:59:27,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 188 transitions, 1982 flow [2024-06-28 02:59:27,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 188 transitions, 1863 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:27,957 INFO L231 Difference]: Finished difference. Result has 215 places, 172 transitions, 1514 flow [2024-06-28 02:59:27,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1514, PETRI_PLACES=215, PETRI_TRANSITIONS=172} [2024-06-28 02:59:27,958 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2024-06-28 02:59:27,958 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 172 transitions, 1514 flow [2024-06-28 02:59:27,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:27,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:27,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:27,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:59:27,959 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)] === [2024-06-28 02:59:27,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:27,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1259376272, now seen corresponding path program 12 times [2024-06-28 02:59:27,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:27,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739161553] [2024-06-28 02:59:27,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:27,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:28,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:28,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739161553] [2024-06-28 02:59:28,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739161553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:28,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:28,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:59:28,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020659408] [2024-06-28 02:59:28,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:28,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:59:28,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:28,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:59:28,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:59:28,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:28,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 172 transitions, 1514 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:28,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:28,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:28,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:29,220 INFO L124 PetriNetUnfolderBase]: 462/859 cut-off events. [2024-06-28 02:59:29,220 INFO L125 PetriNetUnfolderBase]: For 84871/84871 co-relation queries the response was YES. [2024-06-28 02:59:29,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5550 conditions, 859 events. 462/859 cut-off events. For 84871/84871 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4191 event pairs, 70 based on Foata normal form. 14/871 useless extension candidates. Maximal degree in co-relation 5448. Up to 707 conditions per place. [2024-06-28 02:59:29,229 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 151 selfloop transitions, 24 changer transitions 14/191 dead transitions. [2024-06-28 02:59:29,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 191 transitions, 2010 flow [2024-06-28 02:59:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:29,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 02:59:29,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033333333333333 [2024-06-28 02:59:29,231 INFO L175 Difference]: Start difference. First operand has 215 places, 172 transitions, 1514 flow. Second operand 10 states and 121 transitions. [2024-06-28 02:59:29,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 191 transitions, 2010 flow [2024-06-28 02:59:29,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 191 transitions, 1912 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:29,414 INFO L231 Difference]: Finished difference. Result has 215 places, 165 transitions, 1410 flow [2024-06-28 02:59:29,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1410, PETRI_PLACES=215, PETRI_TRANSITIONS=165} [2024-06-28 02:59:29,415 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2024-06-28 02:59:29,415 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 165 transitions, 1410 flow [2024-06-28 02:59:29,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:29,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:29,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:29,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:59:29,416 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)] === [2024-06-28 02:59:29,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1259160791, now seen corresponding path program 5 times [2024-06-28 02:59:29,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:29,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816590733] [2024-06-28 02:59:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:29,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:30,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:30,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816590733] [2024-06-28 02:59:30,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816590733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:30,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:30,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:30,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228545132] [2024-06-28 02:59:30,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:30,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:30,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:30,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:30,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:30,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:30,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 165 transitions, 1410 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:30,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:30,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:30,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:30,603 INFO L124 PetriNetUnfolderBase]: 415/774 cut-off events. [2024-06-28 02:59:30,603 INFO L125 PetriNetUnfolderBase]: For 57036/57036 co-relation queries the response was YES. [2024-06-28 02:59:30,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4938 conditions, 774 events. 415/774 cut-off events. For 57036/57036 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3691 event pairs, 65 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 4836. Up to 731 conditions per place. [2024-06-28 02:59:30,609 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 157 selfloop transitions, 17 changer transitions 0/176 dead transitions. [2024-06-28 02:59:30,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 176 transitions, 1786 flow [2024-06-28 02:59:30,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:59:30,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 02:59:30,609 INFO L175 Difference]: Start difference. First operand has 215 places, 165 transitions, 1410 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:59:30,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 176 transitions, 1786 flow [2024-06-28 02:59:30,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 176 transitions, 1695 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 02:59:30,746 INFO L231 Difference]: Finished difference. Result has 212 places, 165 transitions, 1357 flow [2024-06-28 02:59:30,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1357, PETRI_PLACES=212, PETRI_TRANSITIONS=165} [2024-06-28 02:59:30,747 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2024-06-28 02:59:30,747 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 165 transitions, 1357 flow [2024-06-28 02:59:30,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:30,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:30,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:30,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:59:30,747 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)] === [2024-06-28 02:59:30,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:30,748 INFO L85 PathProgramCache]: Analyzing trace with hash -392090217, now seen corresponding path program 1 times [2024-06-28 02:59:30,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:30,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699701678] [2024-06-28 02:59:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:31,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699701678] [2024-06-28 02:59:31,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699701678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:31,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:31,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:31,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639472498] [2024-06-28 02:59:31,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:31,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:31,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:31,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:31,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:31,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 165 transitions, 1357 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:31,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:31,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:31,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:32,154 INFO L124 PetriNetUnfolderBase]: 420/789 cut-off events. [2024-06-28 02:59:32,155 INFO L125 PetriNetUnfolderBase]: For 66565/66565 co-relation queries the response was YES. [2024-06-28 02:59:32,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 789 events. 420/789 cut-off events. For 66565/66565 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3821 event pairs, 61 based on Foata normal form. 8/795 useless extension candidates. Maximal degree in co-relation 4716. Up to 499 conditions per place. [2024-06-28 02:59:32,161 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 146 selfloop transitions, 32 changer transitions 16/196 dead transitions. [2024-06-28 02:59:32,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 196 transitions, 2051 flow [2024-06-28 02:59:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:59:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:59:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 02:59:32,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-28 02:59:32,163 INFO L175 Difference]: Start difference. First operand has 212 places, 165 transitions, 1357 flow. Second operand 12 states and 143 transitions. [2024-06-28 02:59:32,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 196 transitions, 2051 flow [2024-06-28 02:59:32,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 196 transitions, 1893 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-28 02:59:32,320 INFO L231 Difference]: Finished difference. Result has 213 places, 161 transitions, 1254 flow [2024-06-28 02:59:32,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1254, PETRI_PLACES=213, PETRI_TRANSITIONS=161} [2024-06-28 02:59:32,321 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2024-06-28 02:59:32,321 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 161 transitions, 1254 flow [2024-06-28 02:59:32,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:32,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:32,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:32,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:59:32,321 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)] === [2024-06-28 02:59:32,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash -333882447, now seen corresponding path program 2 times [2024-06-28 02:59:32,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:32,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475080531] [2024-06-28 02:59:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:32,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:33,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:33,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475080531] [2024-06-28 02:59:33,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475080531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:33,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:33,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:33,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616731576] [2024-06-28 02:59:33,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:33,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:33,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:33,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:33,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:33,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:33,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 161 transitions, 1254 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:33,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:33,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:33,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:33,885 INFO L124 PetriNetUnfolderBase]: 422/797 cut-off events. [2024-06-28 02:59:33,885 INFO L125 PetriNetUnfolderBase]: For 83777/83777 co-relation queries the response was YES. [2024-06-28 02:59:33,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5301 conditions, 797 events. 422/797 cut-off events. For 83777/83777 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3906 event pairs, 69 based on Foata normal form. 8/803 useless extension candidates. Maximal degree in co-relation 5200. Up to 573 conditions per place. [2024-06-28 02:59:33,892 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 142 selfloop transitions, 35 changer transitions 9/188 dead transitions. [2024-06-28 02:59:33,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 188 transitions, 1910 flow [2024-06-28 02:59:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:59:33,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:59:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-28 02:59:33,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 02:59:33,893 INFO L175 Difference]: Start difference. First operand has 213 places, 161 transitions, 1254 flow. Second operand 13 states and 143 transitions. [2024-06-28 02:59:33,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 188 transitions, 1910 flow [2024-06-28 02:59:34,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 188 transitions, 1820 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-28 02:59:34,044 INFO L231 Difference]: Finished difference. Result has 208 places, 157 transitions, 1221 flow [2024-06-28 02:59:34,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1221, PETRI_PLACES=208, PETRI_TRANSITIONS=157} [2024-06-28 02:59:34,045 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 179 predicate places. [2024-06-28 02:59:34,045 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 157 transitions, 1221 flow [2024-06-28 02:59:34,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:34,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:34,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:34,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:59:34,045 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)] === [2024-06-28 02:59:34,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:34,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1327118911, now seen corresponding path program 3 times [2024-06-28 02:59:34,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:34,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336637913] [2024-06-28 02:59:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:34,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:34,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:34,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:34,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336637913] [2024-06-28 02:59:34,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336637913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:34,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:34,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059363801] [2024-06-28 02:59:34,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:34,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:34,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:34,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:34,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:35,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:35,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 157 transitions, 1221 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:35,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:35,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:35,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:35,472 INFO L124 PetriNetUnfolderBase]: 416/791 cut-off events. [2024-06-28 02:59:35,472 INFO L125 PetriNetUnfolderBase]: For 80659/80659 co-relation queries the response was YES. [2024-06-28 02:59:35,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5195 conditions, 791 events. 416/791 cut-off events. For 80659/80659 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3890 event pairs, 77 based on Foata normal form. 10/799 useless extension candidates. Maximal degree in co-relation 5098. Up to 644 conditions per place. [2024-06-28 02:59:35,478 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 136 selfloop transitions, 28 changer transitions 13/179 dead transitions. [2024-06-28 02:59:35,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 179 transitions, 1683 flow [2024-06-28 02:59:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:59:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:59:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 02:59:35,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-28 02:59:35,479 INFO L175 Difference]: Start difference. First operand has 208 places, 157 transitions, 1221 flow. Second operand 12 states and 134 transitions. [2024-06-28 02:59:35,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 179 transitions, 1683 flow [2024-06-28 02:59:35,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 179 transitions, 1615 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:59:35,613 INFO L231 Difference]: Finished difference. Result has 206 places, 153 transitions, 1188 flow [2024-06-28 02:59:35,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1188, PETRI_PLACES=206, PETRI_TRANSITIONS=153} [2024-06-28 02:59:35,613 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2024-06-28 02:59:35,613 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 153 transitions, 1188 flow [2024-06-28 02:59:35,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:35,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:35,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:35,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:59:35,614 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)] === [2024-06-28 02:59:35,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:35,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1326998941, now seen corresponding path program 4 times [2024-06-28 02:59:35,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:35,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893166478] [2024-06-28 02:59:35,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:35,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:36,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:36,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893166478] [2024-06-28 02:59:36,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893166478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:36,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:36,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:36,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119665069] [2024-06-28 02:59:36,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:36,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:36,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:36,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:36,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:36,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:36,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 153 transitions, 1188 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:36,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:36,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:36,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:37,099 INFO L124 PetriNetUnfolderBase]: 407/776 cut-off events. [2024-06-28 02:59:37,099 INFO L125 PetriNetUnfolderBase]: For 73896/73896 co-relation queries the response was YES. [2024-06-28 02:59:37,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5060 conditions, 776 events. 407/776 cut-off events. For 73896/73896 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3802 event pairs, 73 based on Foata normal form. 8/782 useless extension candidates. Maximal degree in co-relation 4964. Up to 634 conditions per place. [2024-06-28 02:59:37,104 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 131 selfloop transitions, 22 changer transitions 21/176 dead transitions. [2024-06-28 02:59:37,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 176 transitions, 1621 flow [2024-06-28 02:59:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:59:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:59:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:59:37,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 02:59:37,105 INFO L175 Difference]: Start difference. First operand has 206 places, 153 transitions, 1188 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:59:37,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 176 transitions, 1621 flow [2024-06-28 02:59:37,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 176 transitions, 1561 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:37,223 INFO L231 Difference]: Finished difference. Result has 204 places, 145 transitions, 1105 flow [2024-06-28 02:59:37,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1105, PETRI_PLACES=204, PETRI_TRANSITIONS=145} [2024-06-28 02:59:37,224 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 175 predicate places. [2024-06-28 02:59:37,224 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 145 transitions, 1105 flow [2024-06-28 02:59:37,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:37,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:37,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:37,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:59:37,225 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)] === [2024-06-28 02:59:37,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:37,225 INFO L85 PathProgramCache]: Analyzing trace with hash -275933625, now seen corresponding path program 5 times [2024-06-28 02:59:37,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:37,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607973959] [2024-06-28 02:59:37,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:37,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:38,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:38,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607973959] [2024-06-28 02:59:38,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607973959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:38,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:38,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035147853] [2024-06-28 02:59:38,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:38,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:38,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:38,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:38,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:38,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:38,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 145 transitions, 1105 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:38,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:38,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:38,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:38,814 INFO L124 PetriNetUnfolderBase]: 390/748 cut-off events. [2024-06-28 02:59:38,814 INFO L125 PetriNetUnfolderBase]: For 75662/75662 co-relation queries the response was YES. [2024-06-28 02:59:38,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 748 events. 390/748 cut-off events. For 75662/75662 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3673 event pairs, 79 based on Foata normal form. 10/756 useless extension candidates. Maximal degree in co-relation 4824. Up to 644 conditions per place. [2024-06-28 02:59:38,820 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 128 selfloop transitions, 16 changer transitions 17/163 dead transitions. [2024-06-28 02:59:38,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 163 transitions, 1523 flow [2024-06-28 02:59:38,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:38,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:38,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:59:38,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-28 02:59:38,821 INFO L175 Difference]: Start difference. First operand has 204 places, 145 transitions, 1105 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:59:38,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 163 transitions, 1523 flow [2024-06-28 02:59:38,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 163 transitions, 1444 flow, removed 7 selfloop flow, removed 16 redundant places. [2024-06-28 02:59:38,945 INFO L231 Difference]: Finished difference. Result has 192 places, 138 transitions, 1023 flow [2024-06-28 02:59:38,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1023, PETRI_PLACES=192, PETRI_TRANSITIONS=138} [2024-06-28 02:59:38,945 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-06-28 02:59:38,945 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 138 transitions, 1023 flow [2024-06-28 02:59:38,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:38,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:38,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:38,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:59:38,946 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)] === [2024-06-28 02:59:38,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:38,946 INFO L85 PathProgramCache]: Analyzing trace with hash -280402275, now seen corresponding path program 6 times [2024-06-28 02:59:38,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:38,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843704212] [2024-06-28 02:59:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:38,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:39,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:39,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843704212] [2024-06-28 02:59:39,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843704212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:39,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:39,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:39,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974758184] [2024-06-28 02:59:39,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:39,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:39,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:39,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:39,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:40,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:40,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 138 transitions, 1023 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:40,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:40,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:40,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:40,433 INFO L124 PetriNetUnfolderBase]: 347/667 cut-off events. [2024-06-28 02:59:40,433 INFO L125 PetriNetUnfolderBase]: For 51306/51306 co-relation queries the response was YES. [2024-06-28 02:59:40,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3810 conditions, 667 events. 347/667 cut-off events. For 51306/51306 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3191 event pairs, 60 based on Foata normal form. 10/675 useless extension candidates. Maximal degree in co-relation 3722. Up to 563 conditions per place. [2024-06-28 02:59:40,438 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 124 selfloop transitions, 17 changer transitions 13/156 dead transitions. [2024-06-28 02:59:40,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 156 transitions, 1425 flow [2024-06-28 02:59:40,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:40,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:40,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:59:40,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-28 02:59:40,439 INFO L175 Difference]: Start difference. First operand has 192 places, 138 transitions, 1023 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:59:40,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 156 transitions, 1425 flow [2024-06-28 02:59:40,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 156 transitions, 1381 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:40,515 INFO L231 Difference]: Finished difference. Result has 187 places, 134 transitions, 994 flow [2024-06-28 02:59:40,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=994, PETRI_PLACES=187, PETRI_TRANSITIONS=134} [2024-06-28 02:59:40,516 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 158 predicate places. [2024-06-28 02:59:40,516 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 134 transitions, 994 flow [2024-06-28 02:59:40,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:40,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:40,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:40,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:59:40,517 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)] === [2024-06-28 02:59:40,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:40,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1983964013, now seen corresponding path program 7 times [2024-06-28 02:59:40,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:40,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971866680] [2024-06-28 02:59:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:40,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:41,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:41,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971866680] [2024-06-28 02:59:41,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971866680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:41,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:41,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038232456] [2024-06-28 02:59:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:41,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:41,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:41,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:41,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:41,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 134 transitions, 994 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:41,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:41,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:41,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:41,937 INFO L124 PetriNetUnfolderBase]: 312/598 cut-off events. [2024-06-28 02:59:41,937 INFO L125 PetriNetUnfolderBase]: For 32035/32035 co-relation queries the response was YES. [2024-06-28 02:59:41,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 598 events. 312/598 cut-off events. For 32035/32035 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2781 event pairs, 36 based on Foata normal form. 8/604 useless extension candidates. Maximal degree in co-relation 2908. Up to 499 conditions per place. [2024-06-28 02:59:41,941 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 116 selfloop transitions, 7 changer transitions 27/152 dead transitions. [2024-06-28 02:59:41,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 152 transitions, 1362 flow [2024-06-28 02:59:41,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:41,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 02:59:41,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-28 02:59:41,942 INFO L175 Difference]: Start difference. First operand has 187 places, 134 transitions, 994 flow. Second operand 11 states and 114 transitions. [2024-06-28 02:59:41,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 152 transitions, 1362 flow [2024-06-28 02:59:41,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 152 transitions, 1312 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:41,991 INFO L231 Difference]: Finished difference. Result has 182 places, 121 transitions, 881 flow [2024-06-28 02:59:41,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=881, PETRI_PLACES=182, PETRI_TRANSITIONS=121} [2024-06-28 02:59:41,992 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 153 predicate places. [2024-06-28 02:59:41,992 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 121 transitions, 881 flow [2024-06-28 02:59:41,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:41,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:41,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:41,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:59:41,992 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)] === [2024-06-28 02:59:41,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1649935417, now seen corresponding path program 8 times [2024-06-28 02:59:41,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:41,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713165367] [2024-06-28 02:59:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:41,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:43,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:43,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713165367] [2024-06-28 02:59:43,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713165367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:43,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:43,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:43,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906202550] [2024-06-28 02:59:43,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:43,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:43,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:43,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:43,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 121 transitions, 881 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:43,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:43,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:43,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:43,415 INFO L124 PetriNetUnfolderBase]: 293/555 cut-off events. [2024-06-28 02:59:43,415 INFO L125 PetriNetUnfolderBase]: For 32746/32746 co-relation queries the response was YES. [2024-06-28 02:59:43,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 555 events. 293/555 cut-off events. For 32746/32746 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2513 event pairs, 44 based on Foata normal form. 10/563 useless extension candidates. Maximal degree in co-relation 2713. Up to 403 conditions per place. [2024-06-28 02:59:43,418 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 98 selfloop transitions, 28 changer transitions 11/139 dead transitions. [2024-06-28 02:59:43,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 139 transitions, 1243 flow [2024-06-28 02:59:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:43,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:59:43,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 02:59:43,419 INFO L175 Difference]: Start difference. First operand has 182 places, 121 transitions, 881 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:59:43,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 139 transitions, 1243 flow [2024-06-28 02:59:43,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 139 transitions, 1188 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-06-28 02:59:43,459 INFO L231 Difference]: Finished difference. Result has 161 places, 118 transitions, 872 flow [2024-06-28 02:59:43,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=872, PETRI_PLACES=161, PETRI_TRANSITIONS=118} [2024-06-28 02:59:43,460 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 132 predicate places. [2024-06-28 02:59:43,460 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 118 transitions, 872 flow [2024-06-28 02:59:43,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:43,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:43,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:43,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:59:43,460 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)] === [2024-06-28 02:59:43,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:43,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1649930767, now seen corresponding path program 9 times [2024-06-28 02:59:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:43,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026696222] [2024-06-28 02:59:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:43,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:44,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:44,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026696222] [2024-06-28 02:59:44,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026696222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:44,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:44,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:44,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737194937] [2024-06-28 02:59:44,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:44,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:44,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:44,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:44,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:44,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 118 transitions, 872 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:44,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:44,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:44,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:44,714 INFO L124 PetriNetUnfolderBase]: 281/535 cut-off events. [2024-06-28 02:59:44,714 INFO L125 PetriNetUnfolderBase]: For 23692/23692 co-relation queries the response was YES. [2024-06-28 02:59:44,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2633 conditions, 535 events. 281/535 cut-off events. For 23692/23692 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2413 event pairs, 36 based on Foata normal form. 8/541 useless extension candidates. Maximal degree in co-relation 2557. Up to 393 conditions per place. [2024-06-28 02:59:44,717 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 95 selfloop transitions, 25 changer transitions 13/135 dead transitions. [2024-06-28 02:59:44,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 135 transitions, 1202 flow [2024-06-28 02:59:44,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:59:44,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-28 02:59:44,718 INFO L175 Difference]: Start difference. First operand has 161 places, 118 transitions, 872 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:59:44,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 135 transitions, 1202 flow [2024-06-28 02:59:44,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 135 transitions, 1136 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:44,756 INFO L231 Difference]: Finished difference. Result has 159 places, 114 transitions, 838 flow [2024-06-28 02:59:44,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=838, PETRI_PLACES=159, PETRI_TRANSITIONS=114} [2024-06-28 02:59:44,756 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-28 02:59:44,757 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 114 transitions, 838 flow [2024-06-28 02:59:44,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:44,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:44,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:44,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:59:44,757 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)] === [2024-06-28 02:59:44,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:44,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1483696987, now seen corresponding path program 10 times [2024-06-28 02:59:44,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:44,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336377306] [2024-06-28 02:59:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:44,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:45,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:45,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336377306] [2024-06-28 02:59:45,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336377306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:45,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:45,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:45,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730064936] [2024-06-28 02:59:45,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:45,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:45,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:45,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:45,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:45,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:45,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 114 transitions, 838 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:45,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:45,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:45,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:45,983 INFO L124 PetriNetUnfolderBase]: 302/578 cut-off events. [2024-06-28 02:59:45,983 INFO L125 PetriNetUnfolderBase]: For 34166/34166 co-relation queries the response was YES. [2024-06-28 02:59:45,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 578 events. 302/578 cut-off events. For 34166/34166 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2639 event pairs, 49 based on Foata normal form. 8/584 useless extension candidates. Maximal degree in co-relation 3183. Up to 368 conditions per place. [2024-06-28 02:59:45,986 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 101 selfloop transitions, 27 changer transitions 7/137 dead transitions. [2024-06-28 02:59:45,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 137 transitions, 1318 flow [2024-06-28 02:59:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:59:45,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 02:59:45,987 INFO L175 Difference]: Start difference. First operand has 159 places, 114 transitions, 838 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:59:45,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 137 transitions, 1318 flow [2024-06-28 02:59:46,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 137 transitions, 1252 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:46,040 INFO L231 Difference]: Finished difference. Result has 153 places, 112 transitions, 820 flow [2024-06-28 02:59:46,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=820, PETRI_PLACES=153, PETRI_TRANSITIONS=112} [2024-06-28 02:59:46,041 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2024-06-28 02:59:46,041 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 112 transitions, 820 flow [2024-06-28 02:59:46,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:46,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:46,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:46,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:59:46,041 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)] === [2024-06-28 02:59:46,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:46,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1479113017, now seen corresponding path program 11 times [2024-06-28 02:59:46,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:46,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935947614] [2024-06-28 02:59:46,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:46,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:46,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:46,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935947614] [2024-06-28 02:59:46,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935947614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:46,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:46,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:46,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067112423] [2024-06-28 02:59:46,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:46,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:46,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:46,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:46,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:47,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:47,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 112 transitions, 820 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:47,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:47,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:47,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:47,418 INFO L124 PetriNetUnfolderBase]: 325/627 cut-off events. [2024-06-28 02:59:47,419 INFO L125 PetriNetUnfolderBase]: For 40047/40047 co-relation queries the response was YES. [2024-06-28 02:59:47,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3839 conditions, 627 events. 325/627 cut-off events. For 40047/40047 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2939 event pairs, 56 based on Foata normal form. 8/633 useless extension candidates. Maximal degree in co-relation 3767. Up to 296 conditions per place. [2024-06-28 02:59:47,422 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 87 selfloop transitions, 38 changer transitions 10/137 dead transitions. [2024-06-28 02:59:47,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 137 transitions, 1298 flow [2024-06-28 02:59:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:59:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:59:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 02:59:47,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-28 02:59:47,423 INFO L175 Difference]: Start difference. First operand has 153 places, 112 transitions, 820 flow. Second operand 12 states and 143 transitions. [2024-06-28 02:59:47,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 137 transitions, 1298 flow [2024-06-28 02:59:47,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 137 transitions, 1240 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:47,490 INFO L231 Difference]: Finished difference. Result has 153 places, 109 transitions, 828 flow [2024-06-28 02:59:47,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=828, PETRI_PLACES=153, PETRI_TRANSITIONS=109} [2024-06-28 02:59:47,491 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2024-06-28 02:59:47,491 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 109 transitions, 828 flow [2024-06-28 02:59:47,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:47,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:47,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:47,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:59:47,492 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)] === [2024-06-28 02:59:47,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:47,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1656610461, now seen corresponding path program 1 times [2024-06-28 02:59:47,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:47,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573479938] [2024-06-28 02:59:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:47,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:48,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:48,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573479938] [2024-06-28 02:59:48,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573479938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:48,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:48,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:48,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157305013] [2024-06-28 02:59:48,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:48,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:48,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:48,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:48,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 109 transitions, 828 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:48,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:48,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:48,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:49,069 INFO L124 PetriNetUnfolderBase]: 307/589 cut-off events. [2024-06-28 02:59:49,069 INFO L125 PetriNetUnfolderBase]: For 34403/34403 co-relation queries the response was YES. [2024-06-28 02:59:49,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3744 conditions, 589 events. 307/589 cut-off events. For 34403/34403 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2699 event pairs, 62 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3673. Up to 477 conditions per place. [2024-06-28 02:59:49,072 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 93 selfloop transitions, 28 changer transitions 0/123 dead transitions. [2024-06-28 02:59:49,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 123 transitions, 1110 flow [2024-06-28 02:59:49,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:59:49,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-28 02:59:49,073 INFO L175 Difference]: Start difference. First operand has 153 places, 109 transitions, 828 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:59:49,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 123 transitions, 1110 flow [2024-06-28 02:59:49,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 123 transitions, 1033 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:59:49,128 INFO L231 Difference]: Finished difference. Result has 148 places, 110 transitions, 821 flow [2024-06-28 02:59:49,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=821, PETRI_PLACES=148, PETRI_TRANSITIONS=110} [2024-06-28 02:59:49,129 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2024-06-28 02:59:49,129 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 110 transitions, 821 flow [2024-06-28 02:59:49,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:49,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:49,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:49,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:59:49,129 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)] === [2024-06-28 02:59:49,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:49,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1483701637, now seen corresponding path program 12 times [2024-06-28 02:59:49,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:49,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48477490] [2024-06-28 02:59:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:49,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:50,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:50,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48477490] [2024-06-28 02:59:50,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48477490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:50,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:50,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:50,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486330652] [2024-06-28 02:59:50,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:50,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:50,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:50,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:50,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:50,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:50,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 110 transitions, 821 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:50,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:50,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:50,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:50,475 INFO L124 PetriNetUnfolderBase]: 294/566 cut-off events. [2024-06-28 02:59:50,475 INFO L125 PetriNetUnfolderBase]: For 29422/29422 co-relation queries the response was YES. [2024-06-28 02:59:50,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 566 events. 294/566 cut-off events. For 29422/29422 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2571 event pairs, 53 based on Foata normal form. 10/574 useless extension candidates. Maximal degree in co-relation 3097. Up to 417 conditions per place. [2024-06-28 02:59:50,478 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 88 selfloop transitions, 23 changer transitions 15/128 dead transitions. [2024-06-28 02:59:50,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 128 transitions, 1155 flow [2024-06-28 02:59:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:59:50,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-28 02:59:50,479 INFO L175 Difference]: Start difference. First operand has 148 places, 110 transitions, 821 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:59:50,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 128 transitions, 1155 flow [2024-06-28 02:59:50,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 128 transitions, 1095 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:50,519 INFO L231 Difference]: Finished difference. Result has 151 places, 105 transitions, 770 flow [2024-06-28 02:59:50,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=770, PETRI_PLACES=151, PETRI_TRANSITIONS=105} [2024-06-28 02:59:50,520 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2024-06-28 02:59:50,520 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 105 transitions, 770 flow [2024-06-28 02:59:50,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:50,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:50,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:50,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:59:50,521 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)] === [2024-06-28 02:59:50,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1479232987, now seen corresponding path program 13 times [2024-06-28 02:59:50,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:50,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340474693] [2024-06-28 02:59:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:50,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:51,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:51,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340474693] [2024-06-28 02:59:51,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340474693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:51,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:51,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:51,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293693123] [2024-06-28 02:59:51,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:51,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:51,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:51,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:51,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:51,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:51,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 105 transitions, 770 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:51,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:51,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:51,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:51,897 INFO L124 PetriNetUnfolderBase]: 277/535 cut-off events. [2024-06-28 02:59:51,897 INFO L125 PetriNetUnfolderBase]: For 28801/28801 co-relation queries the response was YES. [2024-06-28 02:59:51,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2923 conditions, 535 events. 277/535 cut-off events. For 28801/28801 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2399 event pairs, 50 based on Foata normal form. 10/543 useless extension candidates. Maximal degree in co-relation 2853. Up to 360 conditions per place. [2024-06-28 02:59:51,900 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 77 selfloop transitions, 34 changer transitions 11/124 dead transitions. [2024-06-28 02:59:51,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 124 transitions, 1098 flow [2024-06-28 02:59:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:59:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:59:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 02:59:51,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-28 02:59:51,901 INFO L175 Difference]: Start difference. First operand has 151 places, 105 transitions, 770 flow. Second operand 12 states and 134 transitions. [2024-06-28 02:59:51,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 124 transitions, 1098 flow [2024-06-28 02:59:51,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 124 transitions, 1040 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:51,942 INFO L231 Difference]: Finished difference. Result has 145 places, 102 transitions, 766 flow [2024-06-28 02:59:51,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=766, PETRI_PLACES=145, PETRI_TRANSITIONS=102} [2024-06-28 02:59:51,942 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-28 02:59:51,942 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 102 transitions, 766 flow [2024-06-28 02:59:51,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:51,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:51,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:51,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:59:51,943 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)] === [2024-06-28 02:59:51,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:51,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1479228337, now seen corresponding path program 14 times [2024-06-28 02:59:51,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:51,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883244508] [2024-06-28 02:59:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:51,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:53,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:53,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883244508] [2024-06-28 02:59:53,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883244508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:53,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:53,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:53,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575471356] [2024-06-28 02:59:53,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:53,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:53,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:53,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:53,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:53,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:53,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 102 transitions, 766 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:53,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:53,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:53,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:53,449 INFO L124 PetriNetUnfolderBase]: 243/469 cut-off events. [2024-06-28 02:59:53,449 INFO L125 PetriNetUnfolderBase]: For 18428/18428 co-relation queries the response was YES. [2024-06-28 02:59:53,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2320 conditions, 469 events. 243/469 cut-off events. For 18428/18428 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2016 event pairs, 28 based on Foata normal form. 8/475 useless extension candidates. Maximal degree in co-relation 2253. Up to 304 conditions per place. [2024-06-28 02:59:53,452 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 73 selfloop transitions, 29 changer transitions 16/120 dead transitions. [2024-06-28 02:59:53,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 120 transitions, 1066 flow [2024-06-28 02:59:53,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:59:53,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:59:53,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 02:59:53,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638888888888889 [2024-06-28 02:59:53,453 INFO L175 Difference]: Start difference. First operand has 145 places, 102 transitions, 766 flow. Second operand 12 states and 131 transitions. [2024-06-28 02:59:53,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 120 transitions, 1066 flow [2024-06-28 02:59:53,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 120 transitions, 988 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:59:53,479 INFO L231 Difference]: Finished difference. Result has 143 places, 96 transitions, 718 flow [2024-06-28 02:59:53,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=718, PETRI_PLACES=143, PETRI_TRANSITIONS=96} [2024-06-28 02:59:53,480 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2024-06-28 02:59:53,480 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 96 transitions, 718 flow [2024-06-28 02:59:53,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:53,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:53,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:53,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:59:53,480 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)] === [2024-06-28 02:59:53,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:53,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1478425033, now seen corresponding path program 2 times [2024-06-28 02:59:53,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:53,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234458670] [2024-06-28 02:59:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:53,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:54,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:54,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234458670] [2024-06-28 02:59:54,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234458670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:54,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:54,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:54,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613265969] [2024-06-28 02:59:54,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:54,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:54,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:54,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:54,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:54,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:54,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 96 transitions, 718 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:54,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:54,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:54,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:54,800 INFO L124 PetriNetUnfolderBase]: 224/428 cut-off events. [2024-06-28 02:59:54,800 INFO L125 PetriNetUnfolderBase]: For 12619/12619 co-relation queries the response was YES. [2024-06-28 02:59:54,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 428 events. 224/428 cut-off events. For 12619/12619 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1782 event pairs, 31 based on Foata normal form. 2/428 useless extension candidates. Maximal degree in co-relation 2081. Up to 381 conditions per place. [2024-06-28 02:59:54,802 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 89 selfloop transitions, 19 changer transitions 0/110 dead transitions. [2024-06-28 02:59:54,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 110 transitions, 978 flow [2024-06-28 02:59:54,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:54,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:59:54,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-28 02:59:54,803 INFO L175 Difference]: Start difference. First operand has 143 places, 96 transitions, 718 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:59:54,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 110 transitions, 978 flow [2024-06-28 02:59:54,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 110 transitions, 906 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 02:59:54,828 INFO L231 Difference]: Finished difference. Result has 132 places, 97 transitions, 700 flow [2024-06-28 02:59:54,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=700, PETRI_PLACES=132, PETRI_TRANSITIONS=97} [2024-06-28 02:59:54,829 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-06-28 02:59:54,829 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 97 transitions, 700 flow [2024-06-28 02:59:54,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:54,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:54,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:54,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:59:54,829 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)] === [2024-06-28 02:59:54,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:54,830 INFO L85 PathProgramCache]: Analyzing trace with hash -416106677, now seen corresponding path program 15 times [2024-06-28 02:59:54,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:54,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550102807] [2024-06-28 02:59:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:54,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:55,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:55,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:55,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550102807] [2024-06-28 02:59:55,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550102807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:55,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:55,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:55,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526297113] [2024-06-28 02:59:55,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:55,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:55,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:55,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:55,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:56,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:56,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 97 transitions, 700 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:56,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:56,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:56,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:56,315 INFO L124 PetriNetUnfolderBase]: 246/474 cut-off events. [2024-06-28 02:59:56,316 INFO L125 PetriNetUnfolderBase]: For 16029/16029 co-relation queries the response was YES. [2024-06-28 02:59:56,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 474 events. 246/474 cut-off events. For 16029/16029 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2042 event pairs, 37 based on Foata normal form. 10/482 useless extension candidates. Maximal degree in co-relation 2183. Up to 373 conditions per place. [2024-06-28 02:59:56,322 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 85 selfloop transitions, 15 changer transitions 16/118 dead transitions. [2024-06-28 02:59:56,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 118 transitions, 1022 flow [2024-06-28 02:59:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:59:56,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-28 02:59:56,324 INFO L175 Difference]: Start difference. First operand has 132 places, 97 transitions, 700 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:59:56,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 118 transitions, 1022 flow [2024-06-28 02:59:56,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 118 transitions, 961 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 02:59:56,354 INFO L231 Difference]: Finished difference. Result has 135 places, 93 transitions, 653 flow [2024-06-28 02:59:56,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=653, PETRI_PLACES=135, PETRI_TRANSITIONS=93} [2024-06-28 02:59:56,354 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2024-06-28 02:59:56,354 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 93 transitions, 653 flow [2024-06-28 02:59:56,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:56,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:56,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:56,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:59:56,355 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)] === [2024-06-28 02:59:56,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1772581685, now seen corresponding path program 3 times [2024-06-28 02:59:56,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:56,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223196491] [2024-06-28 02:59:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:56,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:57,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223196491] [2024-06-28 02:59:57,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223196491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:57,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:57,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:57,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596504707] [2024-06-28 02:59:57,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:57,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:57,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:57,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:57,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:57,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:57,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 93 transitions, 653 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:57,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:57,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:57,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:57,672 INFO L124 PetriNetUnfolderBase]: 216/416 cut-off events. [2024-06-28 02:59:57,672 INFO L125 PetriNetUnfolderBase]: For 10877/10877 co-relation queries the response was YES. [2024-06-28 02:59:57,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 416 events. 216/416 cut-off events. For 10877/10877 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1725 event pairs, 33 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 1937. Up to 378 conditions per place. [2024-06-28 02:59:57,675 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 88 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-28 02:59:57,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 106 transitions, 903 flow [2024-06-28 02:59:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:57,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:59:57,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 02:59:57,676 INFO L175 Difference]: Start difference. First operand has 135 places, 93 transitions, 653 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:59:57,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 106 transitions, 903 flow [2024-06-28 02:59:57,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 106 transitions, 861 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:57,701 INFO L231 Difference]: Finished difference. Result has 130 places, 94 transitions, 661 flow [2024-06-28 02:59:57,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=661, PETRI_PLACES=130, PETRI_TRANSITIONS=94} [2024-06-28 02:59:57,701 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-28 02:59:57,701 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 94 transitions, 661 flow [2024-06-28 02:59:57,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:57,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:57,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:57,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:59:57,702 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)] === [2024-06-28 02:59:57,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1550936645, now seen corresponding path program 4 times [2024-06-28 02:59:57,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:57,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811930352] [2024-06-28 02:59:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:57,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:58,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:58,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811930352] [2024-06-28 02:59:58,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811930352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:58,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:58,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:58,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876500766] [2024-06-28 02:59:58,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:58,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:58,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:58,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:58,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:59:58,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 02:59:58,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 94 transitions, 661 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:58,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:58,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 02:59:58,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:59,045 INFO L124 PetriNetUnfolderBase]: 236/460 cut-off events. [2024-06-28 02:59:59,046 INFO L125 PetriNetUnfolderBase]: For 17381/17381 co-relation queries the response was YES. [2024-06-28 02:59:59,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 460 events. 236/460 cut-off events. For 17381/17381 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1971 event pairs, 39 based on Foata normal form. 12/470 useless extension candidates. Maximal degree in co-relation 2087. Up to 365 conditions per place. [2024-06-28 02:59:59,048 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 83 selfloop transitions, 12 changer transitions 16/113 dead transitions. [2024-06-28 02:59:59,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 113 transitions, 967 flow [2024-06-28 02:59:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:59:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:59:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:59:59,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 02:59:59,049 INFO L175 Difference]: Start difference. First operand has 130 places, 94 transitions, 661 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:59:59,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 113 transitions, 967 flow [2024-06-28 02:59:59,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 113 transitions, 929 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:59,068 INFO L231 Difference]: Finished difference. Result has 133 places, 89 transitions, 617 flow [2024-06-28 02:59:59,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=617, PETRI_PLACES=133, PETRI_TRANSITIONS=89} [2024-06-28 02:59:59,069 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2024-06-28 02:59:59,069 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 89 transitions, 617 flow [2024-06-28 02:59:59,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:59,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:59,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:59,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:59:59,069 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)] === [2024-06-28 02:59:59,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:59,069 INFO L85 PathProgramCache]: Analyzing trace with hash -416279657, now seen corresponding path program 16 times [2024-06-28 02:59:59,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:59,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332902798] [2024-06-28 02:59:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:59,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:59,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332902798] [2024-06-28 02:59:59,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332902798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:59,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:59,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:59:59,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585912148] [2024-06-28 02:59:59,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:59,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:59:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:59,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:59:59,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:00,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:00,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 89 transitions, 617 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:00,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:00,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:00,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:00,419 INFO L124 PetriNetUnfolderBase]: 216/428 cut-off events. [2024-06-28 03:00:00,419 INFO L125 PetriNetUnfolderBase]: For 16662/16662 co-relation queries the response was YES. [2024-06-28 03:00:00,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1999 conditions, 428 events. 216/428 cut-off events. For 16662/16662 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1815 event pairs, 39 based on Foata normal form. 10/436 useless extension candidates. Maximal degree in co-relation 1937. Up to 350 conditions per place. [2024-06-28 03:00:00,421 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 80 selfloop transitions, 13 changer transitions 11/106 dead transitions. [2024-06-28 03:00:00,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 106 transitions, 893 flow [2024-06-28 03:00:00,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:00,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:00:00,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-28 03:00:00,421 INFO L175 Difference]: Start difference. First operand has 133 places, 89 transitions, 617 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:00:00,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 106 transitions, 893 flow [2024-06-28 03:00:00,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 106 transitions, 847 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 03:00:00,443 INFO L231 Difference]: Finished difference. Result has 129 places, 86 transitions, 584 flow [2024-06-28 03:00:00,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=584, PETRI_PLACES=129, PETRI_TRANSITIONS=86} [2024-06-28 03:00:00,443 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 100 predicate places. [2024-06-28 03:00:00,443 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 86 transitions, 584 flow [2024-06-28 03:00:00,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:00,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:00,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:00,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:00:00,443 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)] === [2024-06-28 03:00:00,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:00,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1544265321, now seen corresponding path program 17 times [2024-06-28 03:00:00,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:00,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219354520] [2024-06-28 03:00:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:00,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:01,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:01,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219354520] [2024-06-28 03:00:01,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219354520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:01,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:01,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:01,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019715395] [2024-06-28 03:00:01,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:01,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:01,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:01,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:01,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:01,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:01,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 86 transitions, 584 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:01,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:01,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:01,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:01,691 INFO L124 PetriNetUnfolderBase]: 204/408 cut-off events. [2024-06-28 03:00:01,691 INFO L125 PetriNetUnfolderBase]: For 15056/15056 co-relation queries the response was YES. [2024-06-28 03:00:01,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 408 events. 204/408 cut-off events. For 15056/15056 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1698 event pairs, 35 based on Foata normal form. 8/414 useless extension candidates. Maximal degree in co-relation 1837. Up to 340 conditions per place. [2024-06-28 03:00:01,694 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 77 selfloop transitions, 10 changer transitions 13/102 dead transitions. [2024-06-28 03:00:01,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 102 transitions, 838 flow [2024-06-28 03:00:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:00:01,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-28 03:00:01,696 INFO L175 Difference]: Start difference. First operand has 129 places, 86 transitions, 584 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:00:01,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 102 transitions, 838 flow [2024-06-28 03:00:01,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 102 transitions, 808 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:01,720 INFO L231 Difference]: Finished difference. Result has 127 places, 82 transitions, 554 flow [2024-06-28 03:00:01,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=554, PETRI_PLACES=127, PETRI_TRANSITIONS=82} [2024-06-28 03:00:01,720 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-28 03:00:01,720 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 82 transitions, 554 flow [2024-06-28 03:00:01,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:01,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:01,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:01,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:00:01,721 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)] === [2024-06-28 03:00:01,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1048023395, now seen corresponding path program 5 times [2024-06-28 03:00:01,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:01,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838889361] [2024-06-28 03:00:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:01,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:02,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:02,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838889361] [2024-06-28 03:00:02,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838889361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:02,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:02,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:02,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457838223] [2024-06-28 03:00:02,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:02,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:02,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:02,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:02,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:02,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:02,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 82 transitions, 554 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:02,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:02,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:02,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:03,073 INFO L124 PetriNetUnfolderBase]: 192/380 cut-off events. [2024-06-28 03:00:03,074 INFO L125 PetriNetUnfolderBase]: For 10230/10230 co-relation queries the response was YES. [2024-06-28 03:00:03,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 380 events. 192/380 cut-off events. For 10230/10230 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1563 event pairs, 33 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 1731. Up to 328 conditions per place. [2024-06-28 03:00:03,076 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 77 selfloop transitions, 17 changer transitions 0/96 dead transitions. [2024-06-28 03:00:03,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 96 transitions, 785 flow [2024-06-28 03:00:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:00:03,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-28 03:00:03,077 INFO L175 Difference]: Start difference. First operand has 127 places, 82 transitions, 554 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:00:03,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 96 transitions, 785 flow [2024-06-28 03:00:03,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 96 transitions, 753 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:03,093 INFO L231 Difference]: Finished difference. Result has 121 places, 84 transitions, 583 flow [2024-06-28 03:00:03,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=583, PETRI_PLACES=121, PETRI_TRANSITIONS=84} [2024-06-28 03:00:03,093 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-06-28 03:00:03,093 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 84 transitions, 583 flow [2024-06-28 03:00:03,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:03,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:03,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:03,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:00:03,094 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)] === [2024-06-28 03:00:03,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash -409604613, now seen corresponding path program 6 times [2024-06-28 03:00:03,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:03,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406087801] [2024-06-28 03:00:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:03,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:04,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406087801] [2024-06-28 03:00:04,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406087801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:04,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:04,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:04,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113888129] [2024-06-28 03:00:04,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:04,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:04,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:04,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:04,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:04,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:04,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 84 transitions, 583 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:04,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:04,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:04,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:04,385 INFO L124 PetriNetUnfolderBase]: 204/408 cut-off events. [2024-06-28 03:00:04,385 INFO L125 PetriNetUnfolderBase]: For 12136/12136 co-relation queries the response was YES. [2024-06-28 03:00:04,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1880 conditions, 408 events. 204/408 cut-off events. For 12136/12136 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1700 event pairs, 29 based on Foata normal form. 8/414 useless extension candidates. Maximal degree in co-relation 1823. Up to 329 conditions per place. [2024-06-28 03:00:04,387 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 73 selfloop transitions, 12 changer transitions 13/100 dead transitions. [2024-06-28 03:00:04,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 100 transitions, 837 flow [2024-06-28 03:00:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:04,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:04,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:00:04,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:00:04,388 INFO L175 Difference]: Start difference. First operand has 121 places, 84 transitions, 583 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:00:04,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 100 transitions, 837 flow [2024-06-28 03:00:04,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 100 transitions, 799 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:00:04,408 INFO L231 Difference]: Finished difference. Result has 124 places, 80 transitions, 552 flow [2024-06-28 03:00:04,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=552, PETRI_PLACES=124, PETRI_TRANSITIONS=80} [2024-06-28 03:00:04,409 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-06-28 03:00:04,409 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 80 transitions, 552 flow [2024-06-28 03:00:04,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:04,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:04,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:04,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:00:04,409 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)] === [2024-06-28 03:00:04,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1014953293, now seen corresponding path program 7 times [2024-06-28 03:00:04,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:04,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181302154] [2024-06-28 03:00:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:04,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:05,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:05,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181302154] [2024-06-28 03:00:05,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181302154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:05,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:05,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:05,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118682323] [2024-06-28 03:00:05,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:05,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:05,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:05,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:05,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:05,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:05,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 80 transitions, 552 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:05,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:05,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:05,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:05,660 INFO L124 PetriNetUnfolderBase]: 187/369 cut-off events. [2024-06-28 03:00:05,660 INFO L125 PetriNetUnfolderBase]: For 9294/9294 co-relation queries the response was YES. [2024-06-28 03:00:05,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 369 events. 187/369 cut-off events. For 9294/9294 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1484 event pairs, 35 based on Foata normal form. 2/369 useless extension candidates. Maximal degree in co-relation 1695. Up to 326 conditions per place. [2024-06-28 03:00:05,662 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 77 selfloop transitions, 14 changer transitions 0/93 dead transitions. [2024-06-28 03:00:05,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 93 transitions, 774 flow [2024-06-28 03:00:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:00:05,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3433333333333333 [2024-06-28 03:00:05,663 INFO L175 Difference]: Start difference. First operand has 124 places, 80 transitions, 552 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:00:05,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 93 transitions, 774 flow [2024-06-28 03:00:05,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 93 transitions, 744 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:00:05,678 INFO L231 Difference]: Finished difference. Result has 119 places, 81 transitions, 570 flow [2024-06-28 03:00:05,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=570, PETRI_PLACES=119, PETRI_TRANSITIONS=81} [2024-06-28 03:00:05,679 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-28 03:00:05,679 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 81 transitions, 570 flow [2024-06-28 03:00:05,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:05,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:05,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:05,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:00:05,679 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)] === [2024-06-28 03:00:05,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1048269349, now seen corresponding path program 18 times [2024-06-28 03:00:05,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:05,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836028451] [2024-06-28 03:00:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:05,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:06,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836028451] [2024-06-28 03:00:06,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836028451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:06,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:06,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:06,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87160271] [2024-06-28 03:00:06,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:06,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:06,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:06,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:06,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:06,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 81 transitions, 570 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:06,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:06,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:06,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:07,164 INFO L124 PetriNetUnfolderBase]: 207/413 cut-off events. [2024-06-28 03:00:07,165 INFO L125 PetriNetUnfolderBase]: For 13828/13828 co-relation queries the response was YES. [2024-06-28 03:00:07,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 413 events. 207/413 cut-off events. For 13828/13828 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1740 event pairs, 41 based on Foata normal form. 12/423 useless extension candidates. Maximal degree in co-relation 1853. Up to 300 conditions per place. [2024-06-28 03:00:07,167 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 65 selfloop transitions, 13 changer transitions 20/100 dead transitions. [2024-06-28 03:00:07,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 100 transitions, 850 flow [2024-06-28 03:00:07,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:07,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:00:07,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:00:07,168 INFO L175 Difference]: Start difference. First operand has 119 places, 81 transitions, 570 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:00:07,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 100 transitions, 850 flow [2024-06-28 03:00:07,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 100 transitions, 812 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:07,184 INFO L231 Difference]: Finished difference. Result has 122 places, 72 transitions, 498 flow [2024-06-28 03:00:07,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=498, PETRI_PLACES=122, PETRI_TRANSITIONS=72} [2024-06-28 03:00:07,184 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 93 predicate places. [2024-06-28 03:00:07,184 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 72 transitions, 498 flow [2024-06-28 03:00:07,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:07,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:07,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:07,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:00:07,185 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)] === [2024-06-28 03:00:07,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1039979825, now seen corresponding path program 8 times [2024-06-28 03:00:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17974197] [2024-06-28 03:00:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:08,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17974197] [2024-06-28 03:00:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17974197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:08,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496583526] [2024-06-28 03:00:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:08,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:08,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:08,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:08,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 72 transitions, 498 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:08,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:08,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:08,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:08,389 INFO L124 PetriNetUnfolderBase]: 166/338 cut-off events. [2024-06-28 03:00:08,390 INFO L125 PetriNetUnfolderBase]: For 8728/8728 co-relation queries the response was YES. [2024-06-28 03:00:08,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1626 conditions, 338 events. 166/338 cut-off events. For 8728/8728 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1334 event pairs, 33 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 1580. Up to 280 conditions per place. [2024-06-28 03:00:08,391 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 66 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2024-06-28 03:00:08,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 85 transitions, 708 flow [2024-06-28 03:00:08,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:00:08,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:00:08,392 INFO L175 Difference]: Start difference. First operand has 122 places, 72 transitions, 498 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:00:08,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 85 transitions, 708 flow [2024-06-28 03:00:08,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 85 transitions, 668 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:08,412 INFO L231 Difference]: Finished difference. Result has 115 places, 73 transitions, 516 flow [2024-06-28 03:00:08,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=516, PETRI_PLACES=115, PETRI_TRANSITIONS=73} [2024-06-28 03:00:08,412 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-06-28 03:00:08,412 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 73 transitions, 516 flow [2024-06-28 03:00:08,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:08,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:08,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:08,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:00:08,413 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)] === [2024-06-28 03:00:08,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:08,414 INFO L85 PathProgramCache]: Analyzing trace with hash -814335589, now seen corresponding path program 19 times [2024-06-28 03:00:08,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:08,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953284425] [2024-06-28 03:00:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:08,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:09,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953284425] [2024-06-28 03:00:09,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953284425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:09,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:09,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356047947] [2024-06-28 03:00:09,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:09,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:09,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:09,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:09,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:09,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:09,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 73 transitions, 516 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:09,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:09,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:09,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:09,760 INFO L124 PetriNetUnfolderBase]: 182/374 cut-off events. [2024-06-28 03:00:09,760 INFO L125 PetriNetUnfolderBase]: For 12069/12069 co-relation queries the response was YES. [2024-06-28 03:00:09,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1720 conditions, 374 events. 182/374 cut-off events. For 12069/12069 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1548 event pairs, 41 based on Foata normal form. 10/382 useless extension candidates. Maximal degree in co-relation 1676. Up to 272 conditions per place. [2024-06-28 03:00:09,762 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 58 selfloop transitions, 19 changer transitions 11/90 dead transitions. [2024-06-28 03:00:09,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 90 transitions, 752 flow [2024-06-28 03:00:09,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:00:09,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-28 03:00:09,762 INFO L175 Difference]: Start difference. First operand has 115 places, 73 transitions, 516 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:00:09,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 90 transitions, 752 flow [2024-06-28 03:00:09,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 90 transitions, 708 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:09,777 INFO L231 Difference]: Finished difference. Result has 118 places, 70 transitions, 489 flow [2024-06-28 03:00:09,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=489, PETRI_PLACES=118, PETRI_TRANSITIONS=70} [2024-06-28 03:00:09,777 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-28 03:00:09,777 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 70 transitions, 489 flow [2024-06-28 03:00:09,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:09,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:09,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:09,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:00:09,778 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)] === [2024-06-28 03:00:09,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:09,778 INFO L85 PathProgramCache]: Analyzing trace with hash -552191141, now seen corresponding path program 20 times [2024-06-28 03:00:09,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:09,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078843110] [2024-06-28 03:00:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:09,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:10,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:10,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078843110] [2024-06-28 03:00:10,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078843110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:10,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:10,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:10,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921576412] [2024-06-28 03:00:10,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:10,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:10,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:10,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:10,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:10,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 70 transitions, 489 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:10,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:10,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:10,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:11,105 INFO L124 PetriNetUnfolderBase]: 170/354 cut-off events. [2024-06-28 03:00:11,105 INFO L125 PetriNetUnfolderBase]: For 10902/10902 co-relation queries the response was YES. [2024-06-28 03:00:11,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 354 events. 170/354 cut-off events. For 10902/10902 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1441 event pairs, 37 based on Foata normal form. 8/360 useless extension candidates. Maximal degree in co-relation 1574. Up to 262 conditions per place. [2024-06-28 03:00:11,107 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 55 selfloop transitions, 16 changer transitions 13/86 dead transitions. [2024-06-28 03:00:11,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 86 transitions, 707 flow [2024-06-28 03:00:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:11,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:00:11,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-28 03:00:11,107 INFO L175 Difference]: Start difference. First operand has 118 places, 70 transitions, 489 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:00:11,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 86 transitions, 707 flow [2024-06-28 03:00:11,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 86 transitions, 663 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:00:11,122 INFO L231 Difference]: Finished difference. Result has 117 places, 66 transitions, 450 flow [2024-06-28 03:00:11,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=450, PETRI_PLACES=117, PETRI_TRANSITIONS=66} [2024-06-28 03:00:11,123 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-06-28 03:00:11,123 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 66 transitions, 450 flow [2024-06-28 03:00:11,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:11,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:11,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:11,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:00:11,124 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)] === [2024-06-28 03:00:11,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash -556655141, now seen corresponding path program 21 times [2024-06-28 03:00:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:11,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546069677] [2024-06-28 03:00:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:11,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:11,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:11,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546069677] [2024-06-28 03:00:11,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546069677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:11,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:11,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:11,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075346525] [2024-06-28 03:00:11,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:11,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:11,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:11,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:11,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:12,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:12,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 66 transitions, 450 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:12,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:12,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:12,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:12,445 INFO L124 PetriNetUnfolderBase]: 166/346 cut-off events. [2024-06-28 03:00:12,445 INFO L125 PetriNetUnfolderBase]: For 12065/12065 co-relation queries the response was YES. [2024-06-28 03:00:12,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1575 conditions, 346 events. 166/346 cut-off events. For 12065/12065 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1400 event pairs, 41 based on Foata normal form. 10/354 useless extension candidates. Maximal degree in co-relation 1530. Up to 235 conditions per place. [2024-06-28 03:00:12,446 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 49 selfloop transitions, 23 changer transitions 11/85 dead transitions. [2024-06-28 03:00:12,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 85 transitions, 682 flow [2024-06-28 03:00:12,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:12,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:12,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 03:00:12,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36944444444444446 [2024-06-28 03:00:12,447 INFO L175 Difference]: Start difference. First operand has 117 places, 66 transitions, 450 flow. Second operand 12 states and 133 transitions. [2024-06-28 03:00:12,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 85 transitions, 682 flow [2024-06-28 03:00:12,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 85 transitions, 640 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:12,459 INFO L231 Difference]: Finished difference. Result has 112 places, 63 transitions, 441 flow [2024-06-28 03:00:12,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=441, PETRI_PLACES=112, PETRI_TRANSITIONS=63} [2024-06-28 03:00:12,460 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-28 03:00:12,460 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 63 transitions, 441 flow [2024-06-28 03:00:12,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:12,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:12,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:12,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:00:12,460 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)] === [2024-06-28 03:00:12,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:12,460 INFO L85 PathProgramCache]: Analyzing trace with hash -556659791, now seen corresponding path program 22 times [2024-06-28 03:00:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:12,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211198906] [2024-06-28 03:00:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:12,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:13,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:13,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211198906] [2024-06-28 03:00:13,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211198906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:13,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:13,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:13,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232888929] [2024-06-28 03:00:13,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:13,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:13,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:13,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:13,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:13,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:13,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 63 transitions, 441 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:13,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:13,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:13,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:13,736 INFO L124 PetriNetUnfolderBase]: 154/326 cut-off events. [2024-06-28 03:00:13,736 INFO L125 PetriNetUnfolderBase]: For 10296/10296 co-relation queries the response was YES. [2024-06-28 03:00:13,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 326 events. 154/326 cut-off events. For 10296/10296 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1315 event pairs, 37 based on Foata normal form. 8/332 useless extension candidates. Maximal degree in co-relation 1456. Up to 225 conditions per place. [2024-06-28 03:00:13,738 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 47 selfloop transitions, 21 changer transitions 11/81 dead transitions. [2024-06-28 03:00:13,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 81 transitions, 655 flow [2024-06-28 03:00:13,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 03:00:13,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 03:00:13,738 INFO L175 Difference]: Start difference. First operand has 112 places, 63 transitions, 441 flow. Second operand 12 states and 130 transitions. [2024-06-28 03:00:13,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 81 transitions, 655 flow [2024-06-28 03:00:13,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 81 transitions, 605 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:00:13,749 INFO L231 Difference]: Finished difference. Result has 110 places, 60 transitions, 421 flow [2024-06-28 03:00:13,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=421, PETRI_PLACES=110, PETRI_TRANSITIONS=60} [2024-06-28 03:00:13,750 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-28 03:00:13,750 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 60 transitions, 421 flow [2024-06-28 03:00:13,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:13,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:13,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:13,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:00:13,750 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)] === [2024-06-28 03:00:13,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:13,750 INFO L85 PathProgramCache]: Analyzing trace with hash -889439749, now seen corresponding path program 23 times [2024-06-28 03:00:13,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:13,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251187233] [2024-06-28 03:00:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:13,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:14,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:14,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251187233] [2024-06-28 03:00:14,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251187233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:14,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:14,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:14,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211414796] [2024-06-28 03:00:14,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:14,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:14,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:14,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:14,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:14,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:14,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 60 transitions, 421 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:14,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:14,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:14,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:15,046 INFO L124 PetriNetUnfolderBase]: 162/346 cut-off events. [2024-06-28 03:00:15,046 INFO L125 PetriNetUnfolderBase]: For 12408/12408 co-relation queries the response was YES. [2024-06-28 03:00:15,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1713 conditions, 346 events. 162/346 cut-off events. For 12408/12408 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1398 event pairs, 46 based on Foata normal form. 8/352 useless extension candidates. Maximal degree in co-relation 1672. Up to 180 conditions per place. [2024-06-28 03:00:15,047 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 55 selfloop transitions, 13 changer transitions 12/82 dead transitions. [2024-06-28 03:00:15,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 82 transitions, 715 flow [2024-06-28 03:00:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:15,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:15,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:00:15,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 03:00:15,048 INFO L175 Difference]: Start difference. First operand has 110 places, 60 transitions, 421 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:00:15,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 82 transitions, 715 flow [2024-06-28 03:00:15,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 82 transitions, 661 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:00:15,066 INFO L231 Difference]: Finished difference. Result has 105 places, 55 transitions, 375 flow [2024-06-28 03:00:15,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=375, PETRI_PLACES=105, PETRI_TRANSITIONS=55} [2024-06-28 03:00:15,067 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-28 03:00:15,067 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 55 transitions, 375 flow [2024-06-28 03:00:15,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:15,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:15,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:15,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:00:15,068 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)] === [2024-06-28 03:00:15,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:15,068 INFO L85 PathProgramCache]: Analyzing trace with hash -711942305, now seen corresponding path program 9 times [2024-06-28 03:00:15,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:15,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838827593] [2024-06-28 03:00:15,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:15,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:15,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:15,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838827593] [2024-06-28 03:00:15,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838827593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:15,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:15,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:15,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773291076] [2024-06-28 03:00:15,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:15,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:15,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:15,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:15,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:16,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:16,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 55 transitions, 375 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:16,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:16,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:16,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:16,361 INFO L124 PetriNetUnfolderBase]: 135/289 cut-off events. [2024-06-28 03:00:16,361 INFO L125 PetriNetUnfolderBase]: For 7634/7634 co-relation queries the response was YES. [2024-06-28 03:00:16,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1423 conditions, 289 events. 135/289 cut-off events. For 7634/7634 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1096 event pairs, 43 based on Foata normal form. 2/289 useless extension candidates. Maximal degree in co-relation 1384. Up to 245 conditions per place. [2024-06-28 03:00:16,362 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-06-28 03:00:16,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 67 transitions, 533 flow [2024-06-28 03:00:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:00:16,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:00:16,363 INFO L175 Difference]: Start difference. First operand has 105 places, 55 transitions, 375 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:00:16,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 67 transitions, 533 flow [2024-06-28 03:00:16,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 67 transitions, 494 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 03:00:16,371 INFO L231 Difference]: Finished difference. Result has 97 places, 55 transitions, 366 flow [2024-06-28 03:00:16,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=366, PETRI_PLACES=97, PETRI_TRANSITIONS=55} [2024-06-28 03:00:16,372 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-28 03:00:16,372 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 55 transitions, 366 flow [2024-06-28 03:00:16,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:16,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:16,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:16,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:00:16,372 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)] === [2024-06-28 03:00:16,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:16,372 INFO L85 PathProgramCache]: Analyzing trace with hash -718621999, now seen corresponding path program 24 times [2024-06-28 03:00:16,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:16,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548472548] [2024-06-28 03:00:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:16,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:17,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:17,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548472548] [2024-06-28 03:00:17,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548472548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:17,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:17,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:17,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223968467] [2024-06-28 03:00:17,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:17,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:17,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:17,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:17,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 55 transitions, 366 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:17,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:17,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:17,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:17,757 INFO L124 PetriNetUnfolderBase]: 147/317 cut-off events. [2024-06-28 03:00:17,757 INFO L125 PetriNetUnfolderBase]: For 7519/7519 co-relation queries the response was YES. [2024-06-28 03:00:17,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 317 events. 147/317 cut-off events. For 7519/7519 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1256 event pairs, 39 based on Foata normal form. 8/323 useless extension candidates. Maximal degree in co-relation 1398. Up to 175 conditions per place. [2024-06-28 03:00:17,759 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 54 selfloop transitions, 13 changer transitions 7/76 dead transitions. [2024-06-28 03:00:17,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 76 transitions, 632 flow [2024-06-28 03:00:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:00:17,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-28 03:00:17,760 INFO L175 Difference]: Start difference. First operand has 97 places, 55 transitions, 366 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:00:17,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 76 transitions, 632 flow [2024-06-28 03:00:17,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 76 transitions, 580 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:17,771 INFO L231 Difference]: Finished difference. Result has 98 places, 53 transitions, 335 flow [2024-06-28 03:00:17,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=335, PETRI_PLACES=98, PETRI_TRANSITIONS=53} [2024-06-28 03:00:17,772 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-28 03:00:17,772 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 53 transitions, 335 flow [2024-06-28 03:00:17,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:17,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:17,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:17,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:00:17,773 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)] === [2024-06-28 03:00:17,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:17,773 INFO L85 PathProgramCache]: Analyzing trace with hash -172884443, now seen corresponding path program 25 times [2024-06-28 03:00:17,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:17,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427281117] [2024-06-28 03:00:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:17,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:18,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:18,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427281117] [2024-06-28 03:00:18,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427281117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:18,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:18,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:18,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925580016] [2024-06-28 03:00:18,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:18,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:18,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:18,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:18,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:18,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:18,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 53 transitions, 335 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:18,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:18,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:18,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:19,079 INFO L124 PetriNetUnfolderBase]: 116/256 cut-off events. [2024-06-28 03:00:19,079 INFO L125 PetriNetUnfolderBase]: For 5085/5085 co-relation queries the response was YES. [2024-06-28 03:00:19,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 256 events. 116/256 cut-off events. For 5085/5085 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 939 event pairs, 30 based on Foata normal form. 10/264 useless extension candidates. Maximal degree in co-relation 928. Up to 160 conditions per place. [2024-06-28 03:00:19,080 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 39 selfloop transitions, 14 changer transitions 15/70 dead transitions. [2024-06-28 03:00:19,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 70 transitions, 519 flow [2024-06-28 03:00:19,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 03:00:19,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 03:00:19,081 INFO L175 Difference]: Start difference. First operand has 98 places, 53 transitions, 335 flow. Second operand 12 states and 128 transitions. [2024-06-28 03:00:19,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 70 transitions, 519 flow [2024-06-28 03:00:19,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 70 transitions, 489 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:19,085 INFO L231 Difference]: Finished difference. Result has 98 places, 47 transitions, 296 flow [2024-06-28 03:00:19,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=296, PETRI_PLACES=98, PETRI_TRANSITIONS=47} [2024-06-28 03:00:19,086 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-28 03:00:19,086 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 47 transitions, 296 flow [2024-06-28 03:00:19,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:19,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:19,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:19,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:00:19,086 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)] === [2024-06-28 03:00:19,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash -184682040, now seen corresponding path program 1 times [2024-06-28 03:00:19,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:19,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224667795] [2024-06-28 03:00:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:19,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:20,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:20,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224667795] [2024-06-28 03:00:20,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224667795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:20,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:20,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:20,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371318078] [2024-06-28 03:00:20,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:20,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:20,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:20,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:20,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 47 transitions, 296 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:20,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:20,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:20,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:20,667 INFO L124 PetriNetUnfolderBase]: 98/222 cut-off events. [2024-06-28 03:00:20,667 INFO L125 PetriNetUnfolderBase]: For 3570/3570 co-relation queries the response was YES. [2024-06-28 03:00:20,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 222 events. 98/222 cut-off events. For 3570/3570 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 775 event pairs, 26 based on Foata normal form. 6/226 useless extension candidates. Maximal degree in co-relation 797. Up to 120 conditions per place. [2024-06-28 03:00:20,668 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 29 selfloop transitions, 7 changer transitions 23/61 dead transitions. [2024-06-28 03:00:20,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 61 transitions, 450 flow [2024-06-28 03:00:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:00:20,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:00:20,669 INFO L175 Difference]: Start difference. First operand has 98 places, 47 transitions, 296 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:00:20,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 61 transitions, 450 flow [2024-06-28 03:00:20,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 61 transitions, 401 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 03:00:20,673 INFO L231 Difference]: Finished difference. Result has 86 places, 36 transitions, 215 flow [2024-06-28 03:00:20,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=215, PETRI_PLACES=86, PETRI_TRANSITIONS=36} [2024-06-28 03:00:20,673 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-06-28 03:00:20,673 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 36 transitions, 215 flow [2024-06-28 03:00:20,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:20,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:20,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:20,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:00:20,674 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)] === [2024-06-28 03:00:20,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:20,674 INFO L85 PathProgramCache]: Analyzing trace with hash 719901324, now seen corresponding path program 2 times [2024-06-28 03:00:20,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:20,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319835536] [2024-06-28 03:00:20,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:20,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:21,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319835536] [2024-06-28 03:00:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319835536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:21,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:00:21,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908154762] [2024-06-28 03:00:21,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:21,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:00:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:21,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:00:21,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:00:21,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:21,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 36 transitions, 215 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:21,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:21,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:21,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:21,914 INFO L124 PetriNetUnfolderBase]: 78/175 cut-off events. [2024-06-28 03:00:21,914 INFO L125 PetriNetUnfolderBase]: For 2700/2700 co-relation queries the response was YES. [2024-06-28 03:00:21,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 175 events. 78/175 cut-off events. For 2700/2700 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 551 event pairs, 19 based on Foata normal form. 6/180 useless extension candidates. Maximal degree in co-relation 610. Up to 90 conditions per place. [2024-06-28 03:00:21,915 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 23 selfloop transitions, 7 changer transitions 18/50 dead transitions. [2024-06-28 03:00:21,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 50 transitions, 343 flow [2024-06-28 03:00:21,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:21,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:00:21,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-28 03:00:21,916 INFO L175 Difference]: Start difference. First operand has 86 places, 36 transitions, 215 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:00:21,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 50 transitions, 343 flow [2024-06-28 03:00:21,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 50 transitions, 311 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 03:00:21,918 INFO L231 Difference]: Finished difference. Result has 70 places, 28 transitions, 141 flow [2024-06-28 03:00:21,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=141, PETRI_PLACES=70, PETRI_TRANSITIONS=28} [2024-06-28 03:00:21,918 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-28 03:00:21,918 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 28 transitions, 141 flow [2024-06-28 03:00:21,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:21,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:21,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:21,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:00:21,919 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)] === [2024-06-28 03:00:21,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:21,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1862092344, now seen corresponding path program 3 times [2024-06-28 03:00:21,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:21,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334634805] [2024-06-28 03:00:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:21,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:22,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:22,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334634805] [2024-06-28 03:00:22,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334634805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:22,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:22,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:22,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298637433] [2024-06-28 03:00:22,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:22,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:22,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:22,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:23,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:23,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 28 transitions, 141 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:23,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:23,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:23,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:23,350 INFO L124 PetriNetUnfolderBase]: 55/130 cut-off events. [2024-06-28 03:00:23,350 INFO L125 PetriNetUnfolderBase]: For 1346/1346 co-relation queries the response was YES. [2024-06-28 03:00:23,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 130 events. 55/130 cut-off events. For 1346/1346 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 338 event pairs, 15 based on Foata normal form. 6/135 useless extension candidates. Maximal degree in co-relation 420. Up to 64 conditions per place. [2024-06-28 03:00:23,351 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 17 selfloop transitions, 4 changer transitions 19/42 dead transitions. [2024-06-28 03:00:23,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 42 transitions, 251 flow [2024-06-28 03:00:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:23,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:23,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 03:00:23,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-28 03:00:23,351 INFO L175 Difference]: Start difference. First operand has 70 places, 28 transitions, 141 flow. Second operand 11 states and 107 transitions. [2024-06-28 03:00:23,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 42 transitions, 251 flow [2024-06-28 03:00:23,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 42 transitions, 229 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:23,353 INFO L231 Difference]: Finished difference. Result has 61 places, 21 transitions, 98 flow [2024-06-28 03:00:23,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=98, PETRI_PLACES=61, PETRI_TRANSITIONS=21} [2024-06-28 03:00:23,353 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-28 03:00:23,353 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 21 transitions, 98 flow [2024-06-28 03:00:23,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:23,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:23,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:23,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:00:23,353 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)] === [2024-06-28 03:00:23,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:23,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1127295432, now seen corresponding path program 4 times [2024-06-28 03:00:23,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:23,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493634175] [2024-06-28 03:00:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:23,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:24,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:24,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493634175] [2024-06-28 03:00:24,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493634175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:24,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:24,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:00:24,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001226221] [2024-06-28 03:00:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:24,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:00:24,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:00:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:00:24,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:00:24,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 21 transitions, 98 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:24,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:24,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:00:24,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:24,819 INFO L124 PetriNetUnfolderBase]: 23/62 cut-off events. [2024-06-28 03:00:24,820 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2024-06-28 03:00:24,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 62 events. 23/62 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 158. Up to 24 conditions per place. [2024-06-28 03:00:24,820 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-28 03:00:24,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 29 transitions, 144 flow [2024-06-28 03:00:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:24,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-06-28 03:00:24,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28484848484848485 [2024-06-28 03:00:24,821 INFO L175 Difference]: Start difference. First operand has 61 places, 21 transitions, 98 flow. Second operand 11 states and 94 transitions. [2024-06-28 03:00:24,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 29 transitions, 144 flow [2024-06-28 03:00:24,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 29 transitions, 118 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-28 03:00:24,821 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-28 03:00:24,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-28 03:00:24,821 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-06-28 03:00:24,821 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-28 03:00:24,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:24,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:00:24,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:00:24,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:00:24,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:00:24,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:00:24,825 INFO L445 BasicCegarLoop]: Path program histogram: [25, 13, 12, 9, 6, 6, 5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:24,828 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:00:24,828 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:00:24,831 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:00:24,831 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:00:24,832 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:00:24 BasicIcfg [2024-06-28 03:00:24,833 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:00:24,833 INFO L158 Benchmark]: Toolchain (without parser) took 142522.84ms. Allocated memory was 142.6MB in the beginning and 847.2MB in the end (delta: 704.6MB). Free memory was 65.3MB in the beginning and 782.0MB in the end (delta: -716.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:00:24,833 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 142.6MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:00:24,833 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:00:24,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 710.63ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 65.0MB in the beginning and 149.7MB in the end (delta: -84.7MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2024-06-28 03:00:24,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.24ms. Allocated memory is still 207.6MB. Free memory was 149.7MB in the beginning and 146.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:00:24,834 INFO L158 Benchmark]: Boogie Preprocessor took 60.55ms. Allocated memory is still 207.6MB. Free memory was 146.5MB in the beginning and 143.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:00:24,834 INFO L158 Benchmark]: RCFGBuilder took 623.86ms. Allocated memory is still 207.6MB. Free memory was 143.4MB in the beginning and 93.1MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-06-28 03:00:24,834 INFO L158 Benchmark]: TraceAbstraction took 141070.11ms. Allocated memory was 207.6MB in the beginning and 847.2MB in the end (delta: 639.6MB). Free memory was 92.0MB in the beginning and 782.0MB in the end (delta: -690.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:00:24,835 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 142.6MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 710.63ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 65.0MB in the beginning and 149.7MB in the end (delta: -84.7MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.24ms. Allocated memory is still 207.6MB. Free memory was 149.7MB in the beginning and 146.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.55ms. Allocated memory is still 207.6MB. Free memory was 146.5MB in the beginning and 143.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 623.86ms. Allocated memory is still 207.6MB. Free memory was 143.4MB in the beginning and 93.1MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 141070.11ms. Allocated memory was 207.6MB in the beginning and 847.2MB in the end (delta: 639.6MB). Free memory was 92.0MB in the beginning and 782.0MB in the end (delta: -690.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 815]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 816]: 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, 48 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: 141.0s, OverallIterations: 110, TraceHistogramMax: 1, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 47.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6912 SdHoareTripleChecker+Valid, 25.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5782 mSDsluCounter, 3416 SdHoareTripleChecker+Invalid, 22.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3016 mSDsCounter, 1494 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40325 IncrementalHoareTripleChecker+Invalid, 41819 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1494 mSolverCounterUnsat, 400 mSDtfsCounter, 40325 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1226 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2530 ImplicationChecksByTransitivity, 36.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1544occurred in iteration=69, InterpolantAutomatonStates: 1061, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 91.2s InterpolantComputationTime, 1686 NumberOfCodeBlocks, 1686 NumberOfCodeBlocksAsserted, 110 NumberOfCheckSat, 1576 ConstructedInterpolants, 0 QuantifiedInterpolants, 70748 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 110 InterpolantComputations, 110 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! [2024-06-28 03:00:24,863 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