./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 14:05:49,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:05:49,745 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:05:49,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:05:49,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:05:49,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:05:49,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:05:49,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:05:49,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:05:49,780 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:05:49,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:05:49,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:05:49,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:05:49,782 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:05:49,783 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:05:49,783 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:05:49,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:05:49,783 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:05:49,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:05:49,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:05:49,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:05:49,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:05:49,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:05:49,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:05:49,785 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:05:49,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:05:49,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:05:49,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:05:49,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:05:49,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:05:49,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:05:49,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:05:49,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:49,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:05:49,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:05:49,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:05:49,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:05:49,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:05:49,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:05:49,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:05:49,789 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:05:49,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:05:49,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:05:49,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:05:50,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:05:50,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:05:50,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:05:50,035 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:05:50,035 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:05:50,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-04 14:05:51,055 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:05:51,311 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:05:51,311 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-04 14:05:51,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a6ced14/7eb49fb44b2b4940b8220572a40ba31c/FLAGba44f4be7 [2024-06-04 14:05:51,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a6ced14/7eb49fb44b2b4940b8220572a40ba31c [2024-06-04 14:05:51,343 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:05:51,344 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:05:51,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-04 14:05:51,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:05:51,469 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:05:51,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:51,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:05:51,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:05:51,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:51" (1/2) ... [2024-06-04 14:05:51,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc6983a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51, skipping insertion in model container [2024-06-04 14:05:51,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:51" (1/2) ... [2024-06-04 14:05:51,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@779d1da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:51, skipping insertion in model container [2024-06-04 14:05:51,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:51" (2/2) ... [2024-06-04 14:05:51,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc6983a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:51, skipping insertion in model container [2024-06-04 14:05:51,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:51" (2/2) ... [2024-06-04 14:05:51,479 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:05:51,528 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:05:51,529 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-04 14:05:51,530 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-04 14:05:51,530 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:05:51,530 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-04 14:05:51,577 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:05:51,879 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:51,897 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:05:52,003 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:52,035 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:05:52,036 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52 WrapperNode [2024-06-04 14:05:52,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:52,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:52,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:05:52,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:05:52,044 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 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,064 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 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,100 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 158 [2024-06-04 14:05:52,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:52,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:05:52,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:05:52,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:05:52,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,112 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,134 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]. [2024-06-04 14:05:52,146 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,146 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:05:52,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:05:52,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:05:52,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:05:52,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (1/1) ... [2024-06-04 14:05:52,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:52,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:05:52,200 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) [2024-06-04 14:05:52,209 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 [2024-06-04 14:05:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:05:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:05:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:05:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:05:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:05:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:05:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:05:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:05:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:05:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:05:52,241 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:05:52,377 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:05:52,379 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:05:52,824 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:05:52,824 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:05:52,939 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:05:52,939 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:05:52,940 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:52 BoogieIcfgContainer [2024-06-04 14:05:52,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:05:52,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:05:52,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:05:52,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:05:52,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:05:51" (1/4) ... [2024-06-04 14:05:52,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d07f0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:05:52, skipping insertion in model container [2024-06-04 14:05:52,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:51" (2/4) ... [2024-06-04 14:05:52,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d07f0d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:05:52, skipping insertion in model container [2024-06-04 14:05:52,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:52" (3/4) ... [2024-06-04 14:05:52,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d07f0d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:05:52, skipping insertion in model container [2024-06-04 14:05:52,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:52" (4/4) ... [2024-06-04 14:05:52,947 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-04 14:05:52,960 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:05:52,960 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 14:05:52,960 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:05:52,991 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:05:53,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-04 14:05:53,056 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-04 14:05:53,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:05:53,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:05:53,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-04 14:05:53,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-04 14:05:53,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:05:53,076 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;@36a89f87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:05:53,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 14:05:53,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:05:53,082 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 14:05:53,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:05:53,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:53,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:05:53,083 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)] === [2024-06-04 14:05:53,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:53,088 INFO L85 PathProgramCache]: Analyzing trace with hash -206534661, now seen corresponding path program 1 times [2024-06-04 14:05:53,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:53,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372995514] [2024-06-04 14:05:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:53,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:54,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:54,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372995514] [2024-06-04 14:05:54,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372995514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:54,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:54,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:05:54,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202402794] [2024-06-04 14:05:54,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:54,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:05:54,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:54,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:05:54,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:05:54,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:05:54,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:54,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:54,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:05:54,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:54,247 INFO L124 PetriNetUnfolderBase]: 225/415 cut-off events. [2024-06-04 14:05:54,248 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-04 14:05:54,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 415 events. 225/415 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1563 event pairs, 141 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 822. Up to 394 conditions per place. [2024-06-04 14:05:54,254 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-04 14:05:54,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 127 flow [2024-06-04 14:05:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:05:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:05:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-06-04 14:05:54,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-04 14:05:54,265 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 51 transitions. [2024-06-04 14:05:54,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 127 flow [2024-06-04 14:05:54,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:54,269 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-04 14:05:54,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-04 14:05:54,273 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-04 14:05:54,273 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-04 14:05:54,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:54,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:54,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:54,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:05:54,274 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)] === [2024-06-04 14:05:54,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash -911296742, now seen corresponding path program 1 times [2024-06-04 14:05:54,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:54,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696061592] [2024-06-04 14:05:54,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:54,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:54,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696061592] [2024-06-04 14:05:54,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696061592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:54,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:54,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:05:54,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676810643] [2024-06-04 14:05:54,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:54,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:05:54,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:54,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:05:54,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:05:54,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:05:54,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:54,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:54,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:05:54,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:54,930 INFO L124 PetriNetUnfolderBase]: 219/411 cut-off events. [2024-06-04 14:05:54,931 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-06-04 14:05:54,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 411 events. 219/411 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1545 event pairs, 99 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 906. Up to 366 conditions per place. [2024-06-04 14:05:54,934 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 30 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-04 14:05:54,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 173 flow [2024-06-04 14:05:54,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:05:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:05:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-06-04 14:05:54,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-04 14:05:54,935 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 65 transitions. [2024-06-04 14:05:54,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 173 flow [2024-06-04 14:05:54,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:05:54,937 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-04 14:05:54,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-04 14:05:54,938 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-04 14:05:54,938 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-04 14:05:54,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:54,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:54,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:54,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:05:54,939 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)] === [2024-06-04 14:05:54,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:54,939 INFO L85 PathProgramCache]: Analyzing trace with hash 417178169, now seen corresponding path program 1 times [2024-06-04 14:05:54,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:54,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529965785] [2024-06-04 14:05:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:54,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:56,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:56,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529965785] [2024-06-04 14:05:56,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529965785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:56,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:56,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:05:56,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51779673] [2024-06-04 14:05:56,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:56,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:05:56,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:56,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:05:56,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:05:56,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:05:56,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:56,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:56,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:05:56,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:56,334 INFO L124 PetriNetUnfolderBase]: 213/399 cut-off events. [2024-06-04 14:05:56,335 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-06-04 14:05:56,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 399 events. 213/399 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1474 event pairs, 57 based on Foata normal form. 4/397 useless extension candidates. Maximal degree in co-relation 970. Up to 338 conditions per place. [2024-06-04 14:05:56,339 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 35 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2024-06-04 14:05:56,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 225 flow [2024-06-04 14:05:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:05:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:05:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-06-04 14:05:56,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-06-04 14:05:56,343 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 79 transitions. [2024-06-04 14:05:56,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 225 flow [2024-06-04 14:05:56,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 216 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:56,347 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 123 flow [2024-06-04 14:05:56,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-04 14:05:56,348 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-04 14:05:56,348 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 123 flow [2024-06-04 14:05:56,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:56,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:56,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:56,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:05:56,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:56,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:56,350 INFO L85 PathProgramCache]: Analyzing trace with hash -24617233, now seen corresponding path program 1 times [2024-06-04 14:05:56,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:56,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367953505] [2024-06-04 14:05:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:56,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:56,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:56,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367953505] [2024-06-04 14:05:56,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367953505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:56,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:56,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:05:56,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159219029] [2024-06-04 14:05:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:56,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:56,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:56,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:56,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:05:56,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:56,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:56,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:05:56,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:57,103 INFO L124 PetriNetUnfolderBase]: 211/396 cut-off events. [2024-06-04 14:05:57,104 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2024-06-04 14:05:57,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 396 events. 211/396 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1466 event pairs, 92 based on Foata normal form. 1/396 useless extension candidates. Maximal degree in co-relation 1049. Up to 368 conditions per place. [2024-06-04 14:05:57,106 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 29 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2024-06-04 14:05:57,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 211 flow [2024-06-04 14:05:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:05:57,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:05:57,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-06-04 14:05:57,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-04 14:05:57,108 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 123 flow. Second operand 5 states and 62 transitions. [2024-06-04 14:05:57,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 211 flow [2024-06-04 14:05:57,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 196 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:57,110 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 135 flow [2024-06-04 14:05:57,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-06-04 14:05:57,111 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2024-06-04 14:05:57,111 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 135 flow [2024-06-04 14:05:57,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:57,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:57,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:57,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:05:57,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:57,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1476282712, now seen corresponding path program 1 times [2024-06-04 14:05:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:57,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974439249] [2024-06-04 14:05:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:57,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:58,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974439249] [2024-06-04 14:05:58,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974439249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:58,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:58,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:05:58,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345034794] [2024-06-04 14:05:58,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:58,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:05:58,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:58,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:05:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:05:58,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:05:58,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 135 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:58,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:58,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:05:58,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:58,907 INFO L124 PetriNetUnfolderBase]: 207/386 cut-off events. [2024-06-04 14:05:58,908 INFO L125 PetriNetUnfolderBase]: For 503/503 co-relation queries the response was YES. [2024-06-04 14:05:58,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 386 events. 207/386 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1393 event pairs, 34 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 1074. Up to 309 conditions per place. [2024-06-04 14:05:58,910 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 37 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-04 14:05:58,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 255 flow [2024-06-04 14:05:58,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:58,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:58,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-06-04 14:05:58,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:05:58,912 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 135 flow. Second operand 6 states and 87 transitions. [2024-06-04 14:05:58,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 255 flow [2024-06-04 14:05:58,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 244 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:58,917 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 136 flow [2024-06-04 14:05:58,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-04 14:05:58,919 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-06-04 14:05:58,921 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 136 flow [2024-06-04 14:05:58,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:58,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:58,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:58,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:05:58,926 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)] === [2024-06-04 14:05:58,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash -763132608, now seen corresponding path program 1 times [2024-06-04 14:05:58,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:58,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708083464] [2024-06-04 14:05:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:58,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:59,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:59,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708083464] [2024-06-04 14:05:59,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708083464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:59,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:59,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:59,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898804648] [2024-06-04 14:05:59,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:59,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:05:59,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:59,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:05:59,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:05:59,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:05:59,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:59,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:59,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:05:59,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:59,717 INFO L124 PetriNetUnfolderBase]: 237/422 cut-off events. [2024-06-04 14:05:59,718 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2024-06-04 14:05:59,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 422 events. 237/422 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1485 event pairs, 103 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 1263. Up to 407 conditions per place. [2024-06-04 14:05:59,721 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 30 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-04 14:05:59,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 234 flow [2024-06-04 14:05:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-04 14:05:59,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-04 14:05:59,723 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 136 flow. Second operand 6 states and 65 transitions. [2024-06-04 14:05:59,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 234 flow [2024-06-04 14:05:59,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 214 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:59,726 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 149 flow [2024-06-04 14:05:59,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-04 14:05:59,729 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2024-06-04 14:05:59,730 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 149 flow [2024-06-04 14:05:59,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:59,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:59,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:59,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:05:59,730 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)] === [2024-06-04 14:05:59,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:59,731 INFO L85 PathProgramCache]: Analyzing trace with hash 178152706, now seen corresponding path program 1 times [2024-06-04 14:05:59,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:59,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014488260] [2024-06-04 14:05:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:59,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:00,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:00,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014488260] [2024-06-04 14:06:00,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014488260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:00,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:00,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:06:00,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827222356] [2024-06-04 14:06:00,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:00,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:06:00,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:00,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:06:00,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:06:00,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:00,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:00,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:00,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:00,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:00,480 INFO L124 PetriNetUnfolderBase]: 226/416 cut-off events. [2024-06-04 14:06:00,481 INFO L125 PetriNetUnfolderBase]: For 1126/1129 co-relation queries the response was YES. [2024-06-04 14:06:00,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 416 events. 226/416 cut-off events. For 1126/1129 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1502 event pairs, 81 based on Foata normal form. 4/418 useless extension candidates. Maximal degree in co-relation 1295. Up to 362 conditions per place. [2024-06-04 14:06:00,483 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 34 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-04 14:06:00,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 275 flow [2024-06-04 14:06:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:06:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:06:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-04 14:06:00,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:06:00,485 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 149 flow. Second operand 6 states and 75 transitions. [2024-06-04 14:06:00,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 275 flow [2024-06-04 14:06:00,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 258 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:00,487 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 180 flow [2024-06-04 14:06:00,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-04 14:06:00,488 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2024-06-04 14:06:00,488 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 180 flow [2024-06-04 14:06:00,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:00,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:00,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:00,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:06:00,489 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)] === [2024-06-04 14:06:00,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:00,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2112685646, now seen corresponding path program 2 times [2024-06-04 14:06:00,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:00,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439770601] [2024-06-04 14:06:00,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:00,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:01,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:01,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439770601] [2024-06-04 14:06:01,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439770601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:01,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:01,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:06:01,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755789804] [2024-06-04 14:06:01,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:01,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:06:01,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:06:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:06:01,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:01,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 180 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:01,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:01,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:01,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:01,226 INFO L124 PetriNetUnfolderBase]: 224/416 cut-off events. [2024-06-04 14:06:01,226 INFO L125 PetriNetUnfolderBase]: For 1507/1510 co-relation queries the response was YES. [2024-06-04 14:06:01,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 416 events. 224/416 cut-off events. For 1507/1510 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1523 event pairs, 82 based on Foata normal form. 4/417 useless extension candidates. Maximal degree in co-relation 1419. Up to 348 conditions per place. [2024-06-04 14:06:01,228 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 33 selfloop transitions, 14 changer transitions 0/51 dead transitions. [2024-06-04 14:06:01,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 336 flow [2024-06-04 14:06:01,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:06:01,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:06:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-04 14:06:01,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 14:06:01,232 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 180 flow. Second operand 6 states and 76 transitions. [2024-06-04 14:06:01,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 336 flow [2024-06-04 14:06:01,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 14:06:01,235 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 229 flow [2024-06-04 14:06:01,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-06-04 14:06:01,237 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-06-04 14:06:01,237 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 229 flow [2024-06-04 14:06:01,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:01,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:01,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:01,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:06:01,238 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)] === [2024-06-04 14:06:01,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:01,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2112694574, now seen corresponding path program 1 times [2024-06-04 14:06:01,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:01,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440355507] [2024-06-04 14:06:01,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:01,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:01,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:01,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440355507] [2024-06-04 14:06:01,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440355507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:01,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:01,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:01,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014651384] [2024-06-04 14:06:01,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:01,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:01,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:01,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:01,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:01,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:01,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 229 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-04 14:06:01,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:01,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:01,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:01,998 INFO L124 PetriNetUnfolderBase]: 242/431 cut-off events. [2024-06-04 14:06:01,998 INFO L125 PetriNetUnfolderBase]: For 1835/1835 co-relation queries the response was YES. [2024-06-04 14:06:01,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 431 events. 242/431 cut-off events. For 1835/1835 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1526 event pairs, 80 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 1563. Up to 413 conditions per place. [2024-06-04 14:06:02,001 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 39 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-06-04 14:06:02,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 353 flow [2024-06-04 14:06:02,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-04 14:06:02,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31601731601731603 [2024-06-04 14:06:02,002 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 229 flow. Second operand 7 states and 73 transitions. [2024-06-04 14:06:02,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 353 flow [2024-06-04 14:06:02,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 338 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 14:06:02,007 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 253 flow [2024-06-04 14:06:02,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-06-04 14:06:02,008 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-06-04 14:06:02,008 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 253 flow [2024-06-04 14:06:02,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-04 14:06:02,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:02,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:02,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:06:02,009 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)] === [2024-06-04 14:06:02,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:02,016 INFO L85 PathProgramCache]: Analyzing trace with hash 862087964, now seen corresponding path program 1 times [2024-06-04 14:06:02,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:02,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311558012] [2024-06-04 14:06:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:02,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:02,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:02,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311558012] [2024-06-04 14:06:02,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311558012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:02,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:02,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:02,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158761430] [2024-06-04 14:06:02,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:02,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:02,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:02,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:02,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:02,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:02,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:02,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:03,096 INFO L124 PetriNetUnfolderBase]: 223/411 cut-off events. [2024-06-04 14:06:03,096 INFO L125 PetriNetUnfolderBase]: For 2202/2202 co-relation queries the response was YES. [2024-06-04 14:06:03,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1592 conditions, 411 events. 223/411 cut-off events. For 2202/2202 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1496 event pairs, 75 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 1564. Up to 355 conditions per place. [2024-06-04 14:06:03,099 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 39 selfloop transitions, 11 changer transitions 0/54 dead transitions. [2024-06-04 14:06:03,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 379 flow [2024-06-04 14:06:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:06:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:06:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-04 14:06:03,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:06:03,100 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 253 flow. Second operand 6 states and 75 transitions. [2024-06-04 14:06:03,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 379 flow [2024-06-04 14:06:03,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 354 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:03,103 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 258 flow [2024-06-04 14:06:03,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-06-04 14:06:03,104 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-06-04 14:06:03,104 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 258 flow [2024-06-04 14:06:03,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:03,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:03,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:03,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:06:03,105 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)] === [2024-06-04 14:06:03,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:03,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1061395551, now seen corresponding path program 1 times [2024-06-04 14:06:03,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:03,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234231674] [2024-06-04 14:06:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:03,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:03,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234231674] [2024-06-04 14:06:03,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234231674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:03,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:03,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:03,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663960269] [2024-06-04 14:06:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:03,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:03,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:03,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:03,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 258 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-04 14:06:03,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:03,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:03,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:03,894 INFO L124 PetriNetUnfolderBase]: 246/439 cut-off events. [2024-06-04 14:06:03,895 INFO L125 PetriNetUnfolderBase]: For 2643/2646 co-relation queries the response was YES. [2024-06-04 14:06:03,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 439 events. 246/439 cut-off events. For 2643/2646 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1546 event pairs, 82 based on Foata normal form. 4/441 useless extension candidates. Maximal degree in co-relation 1716. Up to 397 conditions per place. [2024-06-04 14:06:03,898 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 44 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-06-04 14:06:03,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 414 flow [2024-06-04 14:06:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 14:06:03,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2024-06-04 14:06:03,899 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 258 flow. Second operand 7 states and 79 transitions. [2024-06-04 14:06:03,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 414 flow [2024-06-04 14:06:03,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 387 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:03,902 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 276 flow [2024-06-04 14:06:03,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-06-04 14:06:03,903 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2024-06-04 14:06:03,903 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 276 flow [2024-06-04 14:06:03,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-04 14:06:03,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:03,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:03,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:06:03,903 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)] === [2024-06-04 14:06:03,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:03,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1509660327, now seen corresponding path program 2 times [2024-06-04 14:06:03,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:03,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939269051] [2024-06-04 14:06:03,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:03,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:04,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:04,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:04,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939269051] [2024-06-04 14:06:04,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939269051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:04,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:04,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:04,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948818725] [2024-06-04 14:06:04,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:04,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:04,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:04,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:04,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:04,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:04,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 276 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-04 14:06:04,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:04,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:04,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:04,729 INFO L124 PetriNetUnfolderBase]: 257/458 cut-off events. [2024-06-04 14:06:04,729 INFO L125 PetriNetUnfolderBase]: For 3267/3270 co-relation queries the response was YES. [2024-06-04 14:06:04,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 458 events. 257/458 cut-off events. For 3267/3270 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1652 event pairs, 88 based on Foata normal form. 4/459 useless extension candidates. Maximal degree in co-relation 1889. Up to 379 conditions per place. [2024-06-04 14:06:04,732 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 41 selfloop transitions, 21 changer transitions 0/64 dead transitions. [2024-06-04 14:06:04,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 524 flow [2024-06-04 14:06:04,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:04,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:04,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-04 14:06:04,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-04 14:06:04,733 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 276 flow. Second operand 7 states and 83 transitions. [2024-06-04 14:06:04,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 524 flow [2024-06-04 14:06:04,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 495 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:04,737 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 346 flow [2024-06-04 14:06:04,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-04 14:06:04,737 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2024-06-04 14:06:04,738 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 346 flow [2024-06-04 14:06:04,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-04 14:06:04,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:04,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:04,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:06:04,738 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)] === [2024-06-04 14:06:04,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:04,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1069014111, now seen corresponding path program 3 times [2024-06-04 14:06:04,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:04,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186147072] [2024-06-04 14:06:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:04,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:05,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:05,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186147072] [2024-06-04 14:06:05,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186147072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:05,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:05,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:06:05,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941308274] [2024-06-04 14:06:05,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:05,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:06:05,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:05,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:06:05,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:06:05,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:05,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 346 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-04 14:06:05,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:05,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:05,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:05,565 INFO L124 PetriNetUnfolderBase]: 253/452 cut-off events. [2024-06-04 14:06:05,566 INFO L125 PetriNetUnfolderBase]: For 3758/3761 co-relation queries the response was YES. [2024-06-04 14:06:05,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 452 events. 253/452 cut-off events. For 3758/3761 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1637 event pairs, 85 based on Foata normal form. 4/453 useless extension candidates. Maximal degree in co-relation 1934. Up to 376 conditions per place. [2024-06-04 14:06:05,568 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 38 selfloop transitions, 23 changer transitions 0/63 dead transitions. [2024-06-04 14:06:05,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 522 flow [2024-06-04 14:06:05,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 14:06:05,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-04 14:06:05,570 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 346 flow. Second operand 7 states and 81 transitions. [2024-06-04 14:06:05,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 522 flow [2024-06-04 14:06:05,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 493 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-04 14:06:05,574 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 368 flow [2024-06-04 14:06:05,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-06-04 14:06:05,574 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2024-06-04 14:06:05,574 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 368 flow [2024-06-04 14:06:05,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-04 14:06:05,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:05,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:05,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:06:05,575 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)] === [2024-06-04 14:06:05,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:05,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1069024031, now seen corresponding path program 1 times [2024-06-04 14:06:05,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52138439] [2024-06-04 14:06:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:05,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:06,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:06,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52138439] [2024-06-04 14:06:06,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52138439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:06,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:06,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117623452] [2024-06-04 14:06:06,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:06,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:06,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:06,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:06,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:06,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 368 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:06,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:06,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:06,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:06,675 INFO L124 PetriNetUnfolderBase]: 251/447 cut-off events. [2024-06-04 14:06:06,675 INFO L125 PetriNetUnfolderBase]: For 4115/4115 co-relation queries the response was YES. [2024-06-04 14:06:06,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 447 events. 251/447 cut-off events. For 4115/4115 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1609 event pairs, 81 based on Foata normal form. 1/447 useless extension candidates. Maximal degree in co-relation 1985. Up to 426 conditions per place. [2024-06-04 14:06:06,678 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 48 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-04 14:06:06,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 518 flow [2024-06-04 14:06:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-04 14:06:06,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-04 14:06:06,679 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 368 flow. Second operand 8 states and 81 transitions. [2024-06-04 14:06:06,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 518 flow [2024-06-04 14:06:06,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 62 transitions, 477 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:06,683 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 372 flow [2024-06-04 14:06:06,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=372, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2024-06-04 14:06:06,684 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 38 predicate places. [2024-06-04 14:06:06,684 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 372 flow [2024-06-04 14:06:06,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:06,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:06,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:06,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:06:06,685 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)] === [2024-06-04 14:06:06,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:06,685 INFO L85 PathProgramCache]: Analyzing trace with hash -598658207, now seen corresponding path program 1 times [2024-06-04 14:06:06,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:06,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064961653] [2024-06-04 14:06:06,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:06,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:07,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:07,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064961653] [2024-06-04 14:06:07,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064961653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:07,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:07,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:07,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421422649] [2024-06-04 14:06:07,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:07,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:07,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:07,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:07,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:07,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:07,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 372 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:07,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:07,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:07,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:08,020 INFO L124 PetriNetUnfolderBase]: 243/443 cut-off events. [2024-06-04 14:06:08,021 INFO L125 PetriNetUnfolderBase]: For 4892/4894 co-relation queries the response was YES. [2024-06-04 14:06:08,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 443 events. 243/443 cut-off events. For 4892/4894 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1652 event pairs, 57 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 2024. Up to 365 conditions per place. [2024-06-04 14:06:08,024 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 52 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2024-06-04 14:06:08,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 546 flow [2024-06-04 14:06:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-04 14:06:08,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-04 14:06:08,025 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 372 flow. Second operand 7 states and 88 transitions. [2024-06-04 14:06:08,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 546 flow [2024-06-04 14:06:08,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 517 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:08,031 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 386 flow [2024-06-04 14:06:08,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-06-04 14:06:08,032 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 39 predicate places. [2024-06-04 14:06:08,032 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 386 flow [2024-06-04 14:06:08,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:08,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:08,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:08,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:06:08,033 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)] === [2024-06-04 14:06:08,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash -598538237, now seen corresponding path program 2 times [2024-06-04 14:06:08,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:08,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579738317] [2024-06-04 14:06:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:08,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:09,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:09,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579738317] [2024-06-04 14:06:09,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579738317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:09,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:09,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:09,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799206177] [2024-06-04 14:06:09,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:09,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:09,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:09,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:09,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:09,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 386 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:09,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:09,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:09,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:09,517 INFO L124 PetriNetUnfolderBase]: 246/450 cut-off events. [2024-06-04 14:06:09,517 INFO L125 PetriNetUnfolderBase]: For 5446/5446 co-relation queries the response was YES. [2024-06-04 14:06:09,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 450 events. 246/450 cut-off events. For 5446/5446 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1685 event pairs, 55 based on Foata normal form. 2/451 useless extension candidates. Maximal degree in co-relation 2115. Up to 353 conditions per place. [2024-06-04 14:06:09,520 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 48 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-04 14:06:09,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 564 flow [2024-06-04 14:06:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:09,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-04 14:06:09,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852813852813853 [2024-06-04 14:06:09,521 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 386 flow. Second operand 7 states and 89 transitions. [2024-06-04 14:06:09,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 564 flow [2024-06-04 14:06:09,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 537 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:09,529 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 417 flow [2024-06-04 14:06:09,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=417, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-06-04 14:06:09,530 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2024-06-04 14:06:09,530 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 417 flow [2024-06-04 14:06:09,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:09,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:09,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:09,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:06:09,531 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)] === [2024-06-04 14:06:09,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash -594069401, now seen corresponding path program 1 times [2024-06-04 14:06:09,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:09,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62185248] [2024-06-04 14:06:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:09,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:10,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:10,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62185248] [2024-06-04 14:06:10,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62185248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:10,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:10,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:10,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260212729] [2024-06-04 14:06:10,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:10,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:10,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:10,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:10,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 417 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:10,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:10,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:10,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:10,718 INFO L124 PetriNetUnfolderBase]: 261/464 cut-off events. [2024-06-04 14:06:10,718 INFO L125 PetriNetUnfolderBase]: For 5896/5896 co-relation queries the response was YES. [2024-06-04 14:06:10,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 464 events. 261/464 cut-off events. For 5896/5896 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1697 event pairs, 76 based on Foata normal form. 1/464 useless extension candidates. Maximal degree in co-relation 2239. Up to 417 conditions per place. [2024-06-04 14:06:10,721 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 53 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-06-04 14:06:10,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 585 flow [2024-06-04 14:06:10,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 14:06:10,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2024-06-04 14:06:10,722 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 417 flow. Second operand 7 states and 79 transitions. [2024-06-04 14:06:10,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 70 transitions, 585 flow [2024-06-04 14:06:10,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 541 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:10,727 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 411 flow [2024-06-04 14:06:10,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2024-06-04 14:06:10,728 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 43 predicate places. [2024-06-04 14:06:10,728 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 411 flow [2024-06-04 14:06:10,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:10,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:10,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:10,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:06:10,729 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)] === [2024-06-04 14:06:10,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:10,729 INFO L85 PathProgramCache]: Analyzing trace with hash -593889663, now seen corresponding path program 1 times [2024-06-04 14:06:10,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:10,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582481262] [2024-06-04 14:06:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:10,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:11,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:11,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582481262] [2024-06-04 14:06:11,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582481262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:11,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:11,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:11,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717217854] [2024-06-04 14:06:11,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:11,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:11,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:11,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:11,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:11,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:11,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 411 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:11,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:11,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:11,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:11,623 INFO L124 PetriNetUnfolderBase]: 267/475 cut-off events. [2024-06-04 14:06:11,623 INFO L125 PetriNetUnfolderBase]: For 6648/6651 co-relation queries the response was YES. [2024-06-04 14:06:11,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 475 events. 267/475 cut-off events. For 6648/6651 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1717 event pairs, 79 based on Foata normal form. 4/477 useless extension candidates. Maximal degree in co-relation 2301. Up to 425 conditions per place. [2024-06-04 14:06:11,627 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 58 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2024-06-04 14:06:11,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 74 transitions, 609 flow [2024-06-04 14:06:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 14:06:11,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:06:11,628 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 411 flow. Second operand 8 states and 88 transitions. [2024-06-04 14:06:11,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 74 transitions, 609 flow [2024-06-04 14:06:11,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 559 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:11,634 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 414 flow [2024-06-04 14:06:11,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=414, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-06-04 14:06:11,635 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-04 14:06:11,635 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 414 flow [2024-06-04 14:06:11,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:11,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:11,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:11,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:06:11,635 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)] === [2024-06-04 14:06:11,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1220002611, now seen corresponding path program 2 times [2024-06-04 14:06:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:11,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187056208] [2024-06-04 14:06:11,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:11,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:12,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:12,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187056208] [2024-06-04 14:06:12,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187056208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:12,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:12,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:12,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820311378] [2024-06-04 14:06:12,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:12,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:12,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:12,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:12,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 414 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:12,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:12,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:12,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:12,518 INFO L124 PetriNetUnfolderBase]: 273/486 cut-off events. [2024-06-04 14:06:12,519 INFO L125 PetriNetUnfolderBase]: For 7456/7459 co-relation queries the response was YES. [2024-06-04 14:06:12,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2451 conditions, 486 events. 273/486 cut-off events. For 7456/7459 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1780 event pairs, 80 based on Foata normal form. 4/487 useless extension candidates. Maximal degree in co-relation 2413. Up to 377 conditions per place. [2024-06-04 14:06:12,533 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 45 selfloop transitions, 30 changer transitions 0/77 dead transitions. [2024-06-04 14:06:12,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 676 flow [2024-06-04 14:06:12,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:06:12,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-04 14:06:12,535 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 414 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:06:12,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 676 flow [2024-06-04 14:06:12,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 639 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:12,540 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 486 flow [2024-06-04 14:06:12,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=486, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-06-04 14:06:12,541 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2024-06-04 14:06:12,541 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 486 flow [2024-06-04 14:06:12,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:12,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:12,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:12,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:06:12,542 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)] === [2024-06-04 14:06:12,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:12,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1228580435, now seen corresponding path program 3 times [2024-06-04 14:06:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:12,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290148117] [2024-06-04 14:06:12,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:12,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:13,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:13,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290148117] [2024-06-04 14:06:13,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290148117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:13,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:13,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856735017] [2024-06-04 14:06:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:13,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:13,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:13,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:13,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:13,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 486 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:13,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:13,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:13,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:13,809 INFO L124 PetriNetUnfolderBase]: 247/458 cut-off events. [2024-06-04 14:06:13,809 INFO L125 PetriNetUnfolderBase]: For 8121/8124 co-relation queries the response was YES. [2024-06-04 14:06:13,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 458 events. 247/458 cut-off events. For 8121/8124 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1750 event pairs, 65 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2364. Up to 345 conditions per place. [2024-06-04 14:06:13,813 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 51 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2024-06-04 14:06:13,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 676 flow [2024-06-04 14:06:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:06:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:06:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-04 14:06:13,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852813852813853 [2024-06-04 14:06:13,815 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 486 flow. Second operand 7 states and 89 transitions. [2024-06-04 14:06:13,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 676 flow [2024-06-04 14:06:13,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 78 transitions, 626 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:13,823 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 503 flow [2024-06-04 14:06:13,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=503, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-06-04 14:06:13,823 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2024-06-04 14:06:13,823 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 503 flow [2024-06-04 14:06:13,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:13,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:13,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:13,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:06:13,828 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)] === [2024-06-04 14:06:13,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash -421399773, now seen corresponding path program 3 times [2024-06-04 14:06:13,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:13,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139079548] [2024-06-04 14:06:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:13,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:14,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:14,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139079548] [2024-06-04 14:06:14,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139079548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:14,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:14,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:14,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116278702] [2024-06-04 14:06:14,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:14,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:14,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:14,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:14,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:14,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:14,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 503 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:14,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:14,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:14,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:14,681 INFO L124 PetriNetUnfolderBase]: 280/498 cut-off events. [2024-06-04 14:06:14,682 INFO L125 PetriNetUnfolderBase]: For 8976/8979 co-relation queries the response was YES. [2024-06-04 14:06:14,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 498 events. 280/498 cut-off events. For 8976/8979 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1841 event pairs, 86 based on Foata normal form. 4/499 useless extension candidates. Maximal degree in co-relation 2628. Up to 383 conditions per place. [2024-06-04 14:06:14,685 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 53 selfloop transitions, 29 changer transitions 0/84 dead transitions. [2024-06-04 14:06:14,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 825 flow [2024-06-04 14:06:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:14,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 14:06:14,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-04 14:06:14,687 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 503 flow. Second operand 8 states and 94 transitions. [2024-06-04 14:06:14,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 825 flow [2024-06-04 14:06:14,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 84 transitions, 774 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 14:06:14,694 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 555 flow [2024-06-04 14:06:14,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=555, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-06-04 14:06:14,695 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2024-06-04 14:06:14,695 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 555 flow [2024-06-04 14:06:14,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:14,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:14,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:14,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:06:14,696 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)] === [2024-06-04 14:06:14,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1220299281, now seen corresponding path program 4 times [2024-06-04 14:06:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:14,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475025475] [2024-06-04 14:06:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:14,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:15,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:15,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:15,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475025475] [2024-06-04 14:06:15,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475025475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:15,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:15,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:06:15,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731972865] [2024-06-04 14:06:15,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:15,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:06:15,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:15,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:06:15,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:06:15,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:15,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 555 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:15,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:15,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:15,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:15,622 INFO L124 PetriNetUnfolderBase]: 276/492 cut-off events. [2024-06-04 14:06:15,622 INFO L125 PetriNetUnfolderBase]: For 9357/9360 co-relation queries the response was YES. [2024-06-04 14:06:15,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 492 events. 276/492 cut-off events. For 9357/9360 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1824 event pairs, 79 based on Foata normal form. 4/493 useless extension candidates. Maximal degree in co-relation 2606. Up to 380 conditions per place. [2024-06-04 14:06:15,625 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 50 selfloop transitions, 31 changer transitions 0/83 dead transitions. [2024-06-04 14:06:15,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 795 flow [2024-06-04 14:06:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:15,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 14:06:15,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:06:15,628 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 555 flow. Second operand 8 states and 92 transitions. [2024-06-04 14:06:15,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 795 flow [2024-06-04 14:06:15,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 83 transitions, 741 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:15,635 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 568 flow [2024-06-04 14:06:15,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2024-06-04 14:06:15,636 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places. [2024-06-04 14:06:15,636 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 568 flow [2024-06-04 14:06:15,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:15,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:15,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:15,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:06:15,637 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)] === [2024-06-04 14:06:15,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:15,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1219991699, now seen corresponding path program 1 times [2024-06-04 14:06:15,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:15,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380867636] [2024-06-04 14:06:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:15,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:16,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:16,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380867636] [2024-06-04 14:06:16,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380867636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:16,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:16,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:16,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29482662] [2024-06-04 14:06:16,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:16,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:16,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:16,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:16,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:16,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 568 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:16,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:16,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:16,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:17,099 INFO L124 PetriNetUnfolderBase]: 274/487 cut-off events. [2024-06-04 14:06:17,100 INFO L125 PetriNetUnfolderBase]: For 9754/9754 co-relation queries the response was YES. [2024-06-04 14:06:17,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 487 events. 274/487 cut-off events. For 9754/9754 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1807 event pairs, 81 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 2605. Up to 463 conditions per place. [2024-06-04 14:06:17,103 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 65 selfloop transitions, 14 changer transitions 0/81 dead transitions. [2024-06-04 14:06:17,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 81 transitions, 760 flow [2024-06-04 14:06:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:17,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-04 14:06:17,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2996632996632997 [2024-06-04 14:06:17,103 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 568 flow. Second operand 9 states and 89 transitions. [2024-06-04 14:06:17,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 81 transitions, 760 flow [2024-06-04 14:06:17,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 81 transitions, 707 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:17,111 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 566 flow [2024-06-04 14:06:17,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=566, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2024-06-04 14:06:17,111 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-04 14:06:17,111 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 566 flow [2024-06-04 14:06:17,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:17,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:17,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:17,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:06:17,111 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)] === [2024-06-04 14:06:17,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1378533618, now seen corresponding path program 1 times [2024-06-04 14:06:17,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:17,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344670333] [2024-06-04 14:06:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:17,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:18,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:18,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344670333] [2024-06-04 14:06:18,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344670333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:18,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:18,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:18,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862277703] [2024-06-04 14:06:18,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:18,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:18,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:18,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:18,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:18,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:18,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 566 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:18,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:18,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:18,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:18,487 INFO L124 PetriNetUnfolderBase]: 280/497 cut-off events. [2024-06-04 14:06:18,487 INFO L125 PetriNetUnfolderBase]: For 10594/10594 co-relation queries the response was YES. [2024-06-04 14:06:18,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 497 events. 280/497 cut-off events. For 10594/10594 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1832 event pairs, 60 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2670. Up to 436 conditions per place. [2024-06-04 14:06:18,490 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 76 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-06-04 14:06:18,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 802 flow [2024-06-04 14:06:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:06:18,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-04 14:06:18,491 INFO L175 Difference]: Start difference. First operand has 91 places, 72 transitions, 566 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:06:18,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 802 flow [2024-06-04 14:06:18,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 767 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:18,500 INFO L231 Difference]: Finished difference. Result has 92 places, 74 transitions, 584 flow [2024-06-04 14:06:18,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=584, PETRI_PLACES=92, PETRI_TRANSITIONS=74} [2024-06-04 14:06:18,501 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 60 predicate places. [2024-06-04 14:06:18,501 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 584 flow [2024-06-04 14:06:18,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:18,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:18,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:18,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:06:18,502 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)] === [2024-06-04 14:06:18,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash -600631380, now seen corresponding path program 2 times [2024-06-04 14:06:18,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:18,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514421099] [2024-06-04 14:06:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:18,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:19,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:19,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514421099] [2024-06-04 14:06:19,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514421099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:19,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:19,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:19,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514205903] [2024-06-04 14:06:19,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:19,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:19,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:19,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:19,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:19,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 74 transitions, 584 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:19,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:19,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:19,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:19,775 INFO L124 PetriNetUnfolderBase]: 296/523 cut-off events. [2024-06-04 14:06:19,776 INFO L125 PetriNetUnfolderBase]: For 12160/12160 co-relation queries the response was YES. [2024-06-04 14:06:19,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2955 conditions, 523 events. 296/523 cut-off events. For 12160/12160 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1962 event pairs, 56 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 2910. Up to 415 conditions per place. [2024-06-04 14:06:19,780 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 70 selfloop transitions, 24 changer transitions 0/96 dead transitions. [2024-06-04 14:06:19,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 96 transitions, 908 flow [2024-06-04 14:06:19,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 14:06:19,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-06-04 14:06:19,782 INFO L175 Difference]: Start difference. First operand has 92 places, 74 transitions, 584 flow. Second operand 8 states and 95 transitions. [2024-06-04 14:06:19,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 96 transitions, 908 flow [2024-06-04 14:06:19,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 871 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:19,793 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 649 flow [2024-06-04 14:06:19,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=649, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2024-06-04 14:06:19,793 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2024-06-04 14:06:19,794 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 649 flow [2024-06-04 14:06:19,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:19,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:19,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:19,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:06:19,794 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)] === [2024-06-04 14:06:19,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:19,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1374808751, now seen corresponding path program 1 times [2024-06-04 14:06:19,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:19,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502973694] [2024-06-04 14:06:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:19,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:20,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:20,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:20,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502973694] [2024-06-04 14:06:20,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502973694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:20,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:20,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:20,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608081397] [2024-06-04 14:06:20,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:20,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:20,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:20,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:20,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:20,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:20,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 649 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:20,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:20,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:20,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:21,028 INFO L124 PetriNetUnfolderBase]: 294/520 cut-off events. [2024-06-04 14:06:21,028 INFO L125 PetriNetUnfolderBase]: For 12750/12750 co-relation queries the response was YES. [2024-06-04 14:06:21,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3008 conditions, 520 events. 294/520 cut-off events. For 12750/12750 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1945 event pairs, 77 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 2962. Up to 462 conditions per place. [2024-06-04 14:06:21,032 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 71 selfloop transitions, 19 changer transitions 0/92 dead transitions. [2024-06-04 14:06:21,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 867 flow [2024-06-04 14:06:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 14:06:21,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:06:21,034 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 649 flow. Second operand 8 states and 88 transitions. [2024-06-04 14:06:21,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 867 flow [2024-06-04 14:06:21,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 824 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:21,045 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 652 flow [2024-06-04 14:06:21,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=652, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2024-06-04 14:06:21,045 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2024-06-04 14:06:21,046 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 652 flow [2024-06-04 14:06:21,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:21,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:21,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:21,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:06:21,046 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)] === [2024-06-04 14:06:21,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash -462108810, now seen corresponding path program 3 times [2024-06-04 14:06:21,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:21,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460325213] [2024-06-04 14:06:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:21,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:21,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:21,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460325213] [2024-06-04 14:06:21,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460325213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:21,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:21,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164595887] [2024-06-04 14:06:21,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:21,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:21,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:21,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:21,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:22,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:22,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 652 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:22,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:22,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:22,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:22,331 INFO L124 PetriNetUnfolderBase]: 290/514 cut-off events. [2024-06-04 14:06:22,331 INFO L125 PetriNetUnfolderBase]: For 13349/13349 co-relation queries the response was YES. [2024-06-04 14:06:22,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2979 conditions, 514 events. 290/514 cut-off events. For 13349/13349 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1919 event pairs, 57 based on Foata normal form. 2/515 useless extension candidates. Maximal degree in co-relation 2931. Up to 409 conditions per place. [2024-06-04 14:06:22,334 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-06-04 14:06:22,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 874 flow [2024-06-04 14:06:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 14:06:22,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-04 14:06:22,341 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 652 flow. Second operand 8 states and 94 transitions. [2024-06-04 14:06:22,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 874 flow [2024-06-04 14:06:22,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 94 transitions, 784 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 14:06:22,353 INFO L231 Difference]: Finished difference. Result has 97 places, 78 transitions, 613 flow [2024-06-04 14:06:22,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=613, PETRI_PLACES=97, PETRI_TRANSITIONS=78} [2024-06-04 14:06:22,353 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-06-04 14:06:22,353 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 78 transitions, 613 flow [2024-06-04 14:06:22,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:22,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:22,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:22,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:06:22,354 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)] === [2024-06-04 14:06:22,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:22,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1230708692, now seen corresponding path program 1 times [2024-06-04 14:06:22,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:22,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029335178] [2024-06-04 14:06:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:22,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:23,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029335178] [2024-06-04 14:06:23,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029335178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:23,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:23,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:23,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632517227] [2024-06-04 14:06:23,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:23,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:23,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:23,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:23,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:23,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:23,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 transitions, 613 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:23,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:23,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:23,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:23,535 INFO L124 PetriNetUnfolderBase]: 296/525 cut-off events. [2024-06-04 14:06:23,535 INFO L125 PetriNetUnfolderBase]: For 14170/14173 co-relation queries the response was YES. [2024-06-04 14:06:23,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3035 conditions, 525 events. 296/525 cut-off events. For 14170/14173 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1969 event pairs, 79 based on Foata normal form. 4/527 useless extension candidates. Maximal degree in co-relation 2986. Up to 467 conditions per place. [2024-06-04 14:06:23,538 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 78 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-04 14:06:23,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 96 transitions, 865 flow [2024-06-04 14:06:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 14:06:23,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-04 14:06:23,539 INFO L175 Difference]: Start difference. First operand has 97 places, 78 transitions, 613 flow. Second operand 9 states and 97 transitions. [2024-06-04 14:06:23,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 96 transitions, 865 flow [2024-06-04 14:06:23,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 802 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:23,552 INFO L231 Difference]: Finished difference. Result has 99 places, 80 transitions, 611 flow [2024-06-04 14:06:23,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=611, PETRI_PLACES=99, PETRI_TRANSITIONS=80} [2024-06-04 14:06:23,552 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-04 14:06:23,553 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 611 flow [2024-06-04 14:06:23,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:23,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:23,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:23,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:06:23,553 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)] === [2024-06-04 14:06:23,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash 568719374, now seen corresponding path program 4 times [2024-06-04 14:06:23,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:23,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656105264] [2024-06-04 14:06:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:23,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:24,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:24,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656105264] [2024-06-04 14:06:24,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656105264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:24,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:24,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:24,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564818855] [2024-06-04 14:06:24,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:24,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:24,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:24,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:24,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:24,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:24,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 80 transitions, 611 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:24,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:24,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:24,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:24,935 INFO L124 PetriNetUnfolderBase]: 312/552 cut-off events. [2024-06-04 14:06:24,935 INFO L125 PetriNetUnfolderBase]: For 16091/16094 co-relation queries the response was YES. [2024-06-04 14:06:24,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 552 events. 312/552 cut-off events. For 16091/16094 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2104 event pairs, 68 based on Foata normal form. 2/551 useless extension candidates. Maximal degree in co-relation 3208. Up to 387 conditions per place. [2024-06-04 14:06:24,938 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 70 selfloop transitions, 32 changer transitions 0/104 dead transitions. [2024-06-04 14:06:24,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 1049 flow [2024-06-04 14:06:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:24,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:24,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-04 14:06:24,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:06:24,940 INFO L175 Difference]: Start difference. First operand has 99 places, 80 transitions, 611 flow. Second operand 8 states and 100 transitions. [2024-06-04 14:06:24,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 1049 flow [2024-06-04 14:06:24,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 1004 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:24,953 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 717 flow [2024-06-04 14:06:24,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=717, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-06-04 14:06:24,954 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 68 predicate places. [2024-06-04 14:06:24,954 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 717 flow [2024-06-04 14:06:24,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:24,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:24,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:24,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:06:24,955 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)] === [2024-06-04 14:06:24,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash 568713794, now seen corresponding path program 5 times [2024-06-04 14:06:24,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:24,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992024896] [2024-06-04 14:06:24,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:24,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:26,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:26,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992024896] [2024-06-04 14:06:26,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992024896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:26,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:26,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:26,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149297149] [2024-06-04 14:06:26,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:26,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:26,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:26,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:26,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:26,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:26,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 717 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:26,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:26,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:26,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:26,374 INFO L124 PetriNetUnfolderBase]: 308/546 cut-off events. [2024-06-04 14:06:26,375 INFO L125 PetriNetUnfolderBase]: For 16502/16505 co-relation queries the response was YES. [2024-06-04 14:06:26,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3269 conditions, 546 events. 308/546 cut-off events. For 16502/16505 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2078 event pairs, 70 based on Foata normal form. 2/545 useless extension candidates. Maximal degree in co-relation 3218. Up to 384 conditions per place. [2024-06-04 14:06:26,378 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 66 selfloop transitions, 33 changer transitions 0/101 dead transitions. [2024-06-04 14:06:26,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 1009 flow [2024-06-04 14:06:26,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:26,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:26,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 14:06:26,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:06:26,379 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 717 flow. Second operand 8 states and 96 transitions. [2024-06-04 14:06:26,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 1009 flow [2024-06-04 14:06:26,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 921 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:26,394 INFO L231 Difference]: Finished difference. Result has 104 places, 86 transitions, 700 flow [2024-06-04 14:06:26,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=700, PETRI_PLACES=104, PETRI_TRANSITIONS=86} [2024-06-04 14:06:26,395 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2024-06-04 14:06:26,395 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions, 700 flow [2024-06-04 14:06:26,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:26,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:26,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:26,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:06:26,395 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)] === [2024-06-04 14:06:26,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash 568929120, now seen corresponding path program 2 times [2024-06-04 14:06:26,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:26,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616752881] [2024-06-04 14:06:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:26,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:27,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:27,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616752881] [2024-06-04 14:06:27,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616752881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:27,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:27,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:27,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417055473] [2024-06-04 14:06:27,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:27,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:27,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:27,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:27,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:27,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:27,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 86 transitions, 700 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:27,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:27,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:27,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:27,613 INFO L124 PetriNetUnfolderBase]: 334/588 cut-off events. [2024-06-04 14:06:27,614 INFO L125 PetriNetUnfolderBase]: For 19465/19468 co-relation queries the response was YES. [2024-06-04 14:06:27,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3569 conditions, 588 events. 334/588 cut-off events. For 19465/19468 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2289 event pairs, 85 based on Foata normal form. 4/589 useless extension candidates. Maximal degree in co-relation 3517. Up to 393 conditions per place. [2024-06-04 14:06:27,617 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 71 selfloop transitions, 37 changer transitions 0/110 dead transitions. [2024-06-04 14:06:27,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 110 transitions, 1160 flow [2024-06-04 14:06:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 14:06:27,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-04 14:06:27,619 INFO L175 Difference]: Start difference. First operand has 104 places, 86 transitions, 700 flow. Second operand 9 states and 107 transitions. [2024-06-04 14:06:27,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 110 transitions, 1160 flow [2024-06-04 14:06:27,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 110 transitions, 1096 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:27,633 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 812 flow [2024-06-04 14:06:27,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=812, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-06-04 14:06:27,633 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 76 predicate places. [2024-06-04 14:06:27,633 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 812 flow [2024-06-04 14:06:27,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:27,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:27,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:27,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:06:27,634 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)] === [2024-06-04 14:06:27,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash 834952830, now seen corresponding path program 3 times [2024-06-04 14:06:27,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:27,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70665434] [2024-06-04 14:06:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:27,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:28,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:28,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70665434] [2024-06-04 14:06:28,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70665434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:28,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:28,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:28,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957513933] [2024-06-04 14:06:28,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:28,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:28,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:28,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:28,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:28,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:28,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 812 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:28,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:28,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:28,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:28,680 INFO L124 PetriNetUnfolderBase]: 336/590 cut-off events. [2024-06-04 14:06:28,681 INFO L125 PetriNetUnfolderBase]: For 20634/20634 co-relation queries the response was YES. [2024-06-04 14:06:28,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3666 conditions, 590 events. 336/590 cut-off events. For 20634/20634 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2300 event pairs, 85 based on Foata normal form. 4/593 useless extension candidates. Maximal degree in co-relation 3612. Up to 543 conditions per place. [2024-06-04 14:06:28,685 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 87 selfloop transitions, 18 changer transitions 0/107 dead transitions. [2024-06-04 14:06:28,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 107 transitions, 1140 flow [2024-06-04 14:06:28,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:28,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 14:06:28,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31986531986531985 [2024-06-04 14:06:28,687 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 812 flow. Second operand 9 states and 95 transitions. [2024-06-04 14:06:28,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 107 transitions, 1140 flow [2024-06-04 14:06:28,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 107 transitions, 1091 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:28,705 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 843 flow [2024-06-04 14:06:28,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=843, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-06-04 14:06:28,706 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2024-06-04 14:06:28,706 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 843 flow [2024-06-04 14:06:28,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:28,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:28,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:28,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:06:28,707 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)] === [2024-06-04 14:06:28,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:28,707 INFO L85 PathProgramCache]: Analyzing trace with hash 825421694, now seen corresponding path program 6 times [2024-06-04 14:06:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:28,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152922738] [2024-06-04 14:06:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:28,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:29,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:29,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152922738] [2024-06-04 14:06:29,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152922738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:29,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:29,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:29,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292946085] [2024-06-04 14:06:29,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:29,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:29,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:29,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:29,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:29,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 843 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:29,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:29,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:29,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:30,034 INFO L124 PetriNetUnfolderBase]: 332/586 cut-off events. [2024-06-04 14:06:30,034 INFO L125 PetriNetUnfolderBase]: For 19902/19905 co-relation queries the response was YES. [2024-06-04 14:06:30,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 586 events. 332/586 cut-off events. For 19902/19905 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2269 event pairs, 66 based on Foata normal form. 2/585 useless extension candidates. Maximal degree in co-relation 3583. Up to 427 conditions per place. [2024-06-04 14:06:30,037 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 72 selfloop transitions, 36 changer transitions 0/110 dead transitions. [2024-06-04 14:06:30,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 110 transitions, 1097 flow [2024-06-04 14:06:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 14:06:30,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-06-04 14:06:30,049 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 843 flow. Second operand 8 states and 95 transitions. [2024-06-04 14:06:30,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 110 transitions, 1097 flow [2024-06-04 14:06:30,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 110 transitions, 1032 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:30,071 INFO L231 Difference]: Finished difference. Result has 115 places, 95 transitions, 855 flow [2024-06-04 14:06:30,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=855, PETRI_PLACES=115, PETRI_TRANSITIONS=95} [2024-06-04 14:06:30,071 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2024-06-04 14:06:30,071 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 95 transitions, 855 flow [2024-06-04 14:06:30,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:30,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:30,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:30,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:06:30,072 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)] === [2024-06-04 14:06:30,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:30,072 INFO L85 PathProgramCache]: Analyzing trace with hash 825429630, now seen corresponding path program 4 times [2024-06-04 14:06:30,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:30,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396561609] [2024-06-04 14:06:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:30,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:30,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:30,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396561609] [2024-06-04 14:06:30,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396561609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:30,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:30,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:30,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312089017] [2024-06-04 14:06:30,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:30,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:30,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:30,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:30,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:30,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:30,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 95 transitions, 855 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:30,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:30,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:30,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:31,285 INFO L124 PetriNetUnfolderBase]: 338/596 cut-off events. [2024-06-04 14:06:31,286 INFO L125 PetriNetUnfolderBase]: For 21200/21203 co-relation queries the response was YES. [2024-06-04 14:06:31,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3755 conditions, 596 events. 338/596 cut-off events. For 21200/21203 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2332 event pairs, 75 based on Foata normal form. 4/597 useless extension candidates. Maximal degree in co-relation 3697. Up to 394 conditions per place. [2024-06-04 14:06:31,289 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 70 selfloop transitions, 41 changer transitions 0/113 dead transitions. [2024-06-04 14:06:31,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 1227 flow [2024-06-04 14:06:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:31,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 14:06:31,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:06:31,290 INFO L175 Difference]: Start difference. First operand has 115 places, 95 transitions, 855 flow. Second operand 9 states and 105 transitions. [2024-06-04 14:06:31,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 1227 flow [2024-06-04 14:06:31,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 1139 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 14:06:31,308 INFO L231 Difference]: Finished difference. Result has 116 places, 97 transitions, 888 flow [2024-06-04 14:06:31,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=888, PETRI_PLACES=116, PETRI_TRANSITIONS=97} [2024-06-04 14:06:31,308 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 84 predicate places. [2024-06-04 14:06:31,308 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 97 transitions, 888 flow [2024-06-04 14:06:31,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:31,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:31,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:31,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:06:31,309 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)] === [2024-06-04 14:06:31,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:31,309 INFO L85 PathProgramCache]: Analyzing trace with hash 834626400, now seen corresponding path program 5 times [2024-06-04 14:06:31,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:31,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852685003] [2024-06-04 14:06:31,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:31,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:32,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:32,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852685003] [2024-06-04 14:06:32,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852685003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:32,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:32,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450648975] [2024-06-04 14:06:32,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:32,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:32,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:32,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:32,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 97 transitions, 888 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:32,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:32,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:32,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:32,529 INFO L124 PetriNetUnfolderBase]: 339/598 cut-off events. [2024-06-04 14:06:32,530 INFO L125 PetriNetUnfolderBase]: For 21842/21845 co-relation queries the response was YES. [2024-06-04 14:06:32,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 598 events. 339/598 cut-off events. For 21842/21845 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2361 event pairs, 77 based on Foata normal form. 4/599 useless extension candidates. Maximal degree in co-relation 3754. Up to 396 conditions per place. [2024-06-04 14:06:32,534 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 69 selfloop transitions, 44 changer transitions 0/115 dead transitions. [2024-06-04 14:06:32,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 115 transitions, 1272 flow [2024-06-04 14:06:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 14:06:32,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-04 14:06:32,535 INFO L175 Difference]: Start difference. First operand has 116 places, 97 transitions, 888 flow. Second operand 9 states and 104 transitions. [2024-06-04 14:06:32,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 115 transitions, 1272 flow [2024-06-04 14:06:32,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 115 transitions, 1186 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:32,559 INFO L231 Difference]: Finished difference. Result has 119 places, 99 transitions, 933 flow [2024-06-04 14:06:32,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=933, PETRI_PLACES=119, PETRI_TRANSITIONS=99} [2024-06-04 14:06:32,560 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 87 predicate places. [2024-06-04 14:06:32,560 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 99 transitions, 933 flow [2024-06-04 14:06:32,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:32,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:32,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:32,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:06:32,561 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)] === [2024-06-04 14:06:32,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash 834964734, now seen corresponding path program 1 times [2024-06-04 14:06:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:32,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562769920] [2024-06-04 14:06:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:33,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:33,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562769920] [2024-06-04 14:06:33,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562769920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:33,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:33,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567155755] [2024-06-04 14:06:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:33,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:33,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:33,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:33,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 99 transitions, 933 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:33,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:33,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:33,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:33,940 INFO L124 PetriNetUnfolderBase]: 336/591 cut-off events. [2024-06-04 14:06:33,940 INFO L125 PetriNetUnfolderBase]: For 21719/21719 co-relation queries the response was YES. [2024-06-04 14:06:33,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3768 conditions, 591 events. 336/591 cut-off events. For 21719/21719 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2285 event pairs, 90 based on Foata normal form. 2/592 useless extension candidates. Maximal degree in co-relation 3708. Up to 561 conditions per place. [2024-06-04 14:06:33,944 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 93 selfloop transitions, 15 changer transitions 0/110 dead transitions. [2024-06-04 14:06:33,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 110 transitions, 1173 flow [2024-06-04 14:06:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:33,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-04 14:06:33,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2909090909090909 [2024-06-04 14:06:33,945 INFO L175 Difference]: Start difference. First operand has 119 places, 99 transitions, 933 flow. Second operand 10 states and 96 transitions. [2024-06-04 14:06:33,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 110 transitions, 1173 flow [2024-06-04 14:06:33,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 110 transitions, 1082 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:33,967 INFO L231 Difference]: Finished difference. Result has 123 places, 99 transitions, 876 flow [2024-06-04 14:06:33,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=876, PETRI_PLACES=123, PETRI_TRANSITIONS=99} [2024-06-04 14:06:33,968 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 91 predicate places. [2024-06-04 14:06:33,968 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 99 transitions, 876 flow [2024-06-04 14:06:33,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:33,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:33,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:33,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:06:33,969 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)] === [2024-06-04 14:06:33,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1558028020, now seen corresponding path program 1 times [2024-06-04 14:06:33,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:33,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879006822] [2024-06-04 14:06:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:35,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:35,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879006822] [2024-06-04 14:06:35,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879006822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:35,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:35,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:35,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68119297] [2024-06-04 14:06:35,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:35,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:35,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:35,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:35,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:35,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:35,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 99 transitions, 876 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:35,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:35,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:35,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:35,440 INFO L124 PetriNetUnfolderBase]: 311/568 cut-off events. [2024-06-04 14:06:35,440 INFO L125 PetriNetUnfolderBase]: For 22942/22944 co-relation queries the response was YES. [2024-06-04 14:06:35,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 568 events. 311/568 cut-off events. For 22942/22944 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2322 event pairs, 43 based on Foata normal form. 2/567 useless extension candidates. Maximal degree in co-relation 3554. Up to 459 conditions per place. [2024-06-04 14:06:35,444 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 92 selfloop transitions, 11 changer transitions 0/117 dead transitions. [2024-06-04 14:06:35,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 117 transitions, 1136 flow [2024-06-04 14:06:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 14:06:35,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-06-04 14:06:35,453 INFO L175 Difference]: Start difference. First operand has 123 places, 99 transitions, 876 flow. Second operand 8 states and 95 transitions. [2024-06-04 14:06:35,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 117 transitions, 1136 flow [2024-06-04 14:06:35,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 117 transitions, 1096 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 14:06:35,479 INFO L231 Difference]: Finished difference. Result has 123 places, 100 transitions, 878 flow [2024-06-04 14:06:35,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=878, PETRI_PLACES=123, PETRI_TRANSITIONS=100} [2024-06-04 14:06:35,480 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 91 predicate places. [2024-06-04 14:06:35,480 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 100 transitions, 878 flow [2024-06-04 14:06:35,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:35,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:35,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:35,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:06:35,481 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)] === [2024-06-04 14:06:35,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash 212330978, now seen corresponding path program 2 times [2024-06-04 14:06:35,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:35,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031940548] [2024-06-04 14:06:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:36,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031940548] [2024-06-04 14:06:36,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031940548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:36,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:36,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:36,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139729558] [2024-06-04 14:06:36,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:36,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:36,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:36,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:36,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 100 transitions, 878 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:36,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:36,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:36,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:37,178 INFO L124 PetriNetUnfolderBase]: 313/574 cut-off events. [2024-06-04 14:06:37,178 INFO L125 PetriNetUnfolderBase]: For 24233/24235 co-relation queries the response was YES. [2024-06-04 14:06:37,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3677 conditions, 574 events. 313/574 cut-off events. For 24233/24235 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2362 event pairs, 60 based on Foata normal form. 2/573 useless extension candidates. Maximal degree in co-relation 3615. Up to 479 conditions per place. [2024-06-04 14:06:37,182 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 92 selfloop transitions, 12 changer transitions 0/118 dead transitions. [2024-06-04 14:06:37,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 118 transitions, 1142 flow [2024-06-04 14:06:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 14:06:37,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36742424242424243 [2024-06-04 14:06:37,183 INFO L175 Difference]: Start difference. First operand has 123 places, 100 transitions, 878 flow. Second operand 8 states and 97 transitions. [2024-06-04 14:06:37,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 118 transitions, 1142 flow [2024-06-04 14:06:37,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 118 transitions, 1110 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:37,210 INFO L231 Difference]: Finished difference. Result has 125 places, 101 transitions, 892 flow [2024-06-04 14:06:37,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=892, PETRI_PLACES=125, PETRI_TRANSITIONS=101} [2024-06-04 14:06:37,210 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 93 predicate places. [2024-06-04 14:06:37,210 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 101 transitions, 892 flow [2024-06-04 14:06:37,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:37,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:37,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:37,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:06:37,211 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)] === [2024-06-04 14:06:37,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:37,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1555166100, now seen corresponding path program 1 times [2024-06-04 14:06:37,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:37,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933556029] [2024-06-04 14:06:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:37,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:38,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:38,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933556029] [2024-06-04 14:06:38,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933556029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:38,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:38,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:38,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703784705] [2024-06-04 14:06:38,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:38,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:38,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:38,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:38,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:38,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:38,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 101 transitions, 892 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:38,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:38,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:38,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:38,455 INFO L124 PetriNetUnfolderBase]: 350/617 cut-off events. [2024-06-04 14:06:38,455 INFO L125 PetriNetUnfolderBase]: For 25583/25583 co-relation queries the response was YES. [2024-06-04 14:06:38,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3881 conditions, 617 events. 350/617 cut-off events. For 25583/25583 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2462 event pairs, 70 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 3818. Up to 548 conditions per place. [2024-06-04 14:06:38,459 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 105 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2024-06-04 14:06:38,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 122 transitions, 1198 flow [2024-06-04 14:06:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:06:38,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-04 14:06:38,460 INFO L175 Difference]: Start difference. First operand has 125 places, 101 transitions, 892 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:06:38,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 122 transitions, 1198 flow [2024-06-04 14:06:38,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 122 transitions, 1162 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:38,493 INFO L231 Difference]: Finished difference. Result has 128 places, 103 transitions, 917 flow [2024-06-04 14:06:38,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=917, PETRI_PLACES=128, PETRI_TRANSITIONS=103} [2024-06-04 14:06:38,494 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 96 predicate places. [2024-06-04 14:06:38,494 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 103 transitions, 917 flow [2024-06-04 14:06:38,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:38,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:38,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:38,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:06:38,495 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)] === [2024-06-04 14:06:38,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:38,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1439701950, now seen corresponding path program 2 times [2024-06-04 14:06:38,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:38,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432667950] [2024-06-04 14:06:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:38,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:39,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:39,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432667950] [2024-06-04 14:06:39,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432667950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:39,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:39,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:39,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245582309] [2024-06-04 14:06:39,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:39,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:39,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:39,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:39,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:39,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:39,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 103 transitions, 917 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:39,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:39,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:39,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:39,950 INFO L124 PetriNetUnfolderBase]: 376/659 cut-off events. [2024-06-04 14:06:39,950 INFO L125 PetriNetUnfolderBase]: For 29941/29941 co-relation queries the response was YES. [2024-06-04 14:06:39,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 659 events. 376/659 cut-off events. For 29941/29941 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2688 event pairs, 61 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4226. Up to 505 conditions per place. [2024-06-04 14:06:39,954 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 96 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-06-04 14:06:39,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 130 transitions, 1457 flow [2024-06-04 14:06:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:39,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 14:06:39,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-04 14:06:39,955 INFO L175 Difference]: Start difference. First operand has 128 places, 103 transitions, 917 flow. Second operand 9 states and 107 transitions. [2024-06-04 14:06:39,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 130 transitions, 1457 flow [2024-06-04 14:06:39,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 1412 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:39,993 INFO L231 Difference]: Finished difference. Result has 130 places, 109 transitions, 1023 flow [2024-06-04 14:06:39,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1023, PETRI_PLACES=130, PETRI_TRANSITIONS=109} [2024-06-04 14:06:39,994 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-04 14:06:39,994 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 1023 flow [2024-06-04 14:06:39,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:39,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:39,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:39,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:06:39,994 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)] === [2024-06-04 14:06:39,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash 330603356, now seen corresponding path program 1 times [2024-06-04 14:06:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:39,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613136201] [2024-06-04 14:06:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:41,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:41,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613136201] [2024-06-04 14:06:41,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613136201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:41,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:41,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:41,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324169864] [2024-06-04 14:06:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:41,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:41,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:41,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:41,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 109 transitions, 1023 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:41,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:41,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:41,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:41,661 INFO L124 PetriNetUnfolderBase]: 374/656 cut-off events. [2024-06-04 14:06:41,661 INFO L125 PetriNetUnfolderBase]: For 30225/30225 co-relation queries the response was YES. [2024-06-04 14:06:41,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4330 conditions, 656 events. 374/656 cut-off events. For 30225/30225 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2665 event pairs, 85 based on Foata normal form. 1/656 useless extension candidates. Maximal degree in co-relation 4265. Up to 587 conditions per place. [2024-06-04 14:06:41,665 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 102 selfloop transitions, 23 changer transitions 0/127 dead transitions. [2024-06-04 14:06:41,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 127 transitions, 1351 flow [2024-06-04 14:06:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 14:06:41,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-04 14:06:41,666 INFO L175 Difference]: Start difference. First operand has 130 places, 109 transitions, 1023 flow. Second operand 9 states and 97 transitions. [2024-06-04 14:06:41,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 127 transitions, 1351 flow [2024-06-04 14:06:41,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 127 transitions, 1308 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 14:06:41,705 INFO L231 Difference]: Finished difference. Result has 135 places, 111 transitions, 1072 flow [2024-06-04 14:06:41,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1072, PETRI_PLACES=135, PETRI_TRANSITIONS=111} [2024-06-04 14:06:41,706 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2024-06-04 14:06:41,706 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 111 transitions, 1072 flow [2024-06-04 14:06:41,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:41,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:41,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:41,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:06:41,706 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)] === [2024-06-04 14:06:41,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:41,707 INFO L85 PathProgramCache]: Analyzing trace with hash 329824012, now seen corresponding path program 3 times [2024-06-04 14:06:41,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:41,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396862302] [2024-06-04 14:06:41,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:41,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:43,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396862302] [2024-06-04 14:06:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396862302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:43,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:43,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:43,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062963263] [2024-06-04 14:06:43,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:43,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:43,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:43,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:43,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:43,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:43,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 111 transitions, 1072 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:43,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:43,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:43,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:43,536 INFO L124 PetriNetUnfolderBase]: 342/624 cut-off events. [2024-06-04 14:06:43,537 INFO L125 PetriNetUnfolderBase]: For 32727/32731 co-relation queries the response was YES. [2024-06-04 14:06:43,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4298 conditions, 624 events. 342/624 cut-off events. For 32727/32731 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2671 event pairs, 54 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 4231. Up to 512 conditions per place. [2024-06-04 14:06:43,540 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 97 selfloop transitions, 17 changer transitions 0/128 dead transitions. [2024-06-04 14:06:43,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 128 transitions, 1356 flow [2024-06-04 14:06:43,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-04 14:06:43,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-04 14:06:43,541 INFO L175 Difference]: Start difference. First operand has 135 places, 111 transitions, 1072 flow. Second operand 8 states and 98 transitions. [2024-06-04 14:06:43,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 128 transitions, 1356 flow [2024-06-04 14:06:43,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 128 transitions, 1294 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:43,587 INFO L231 Difference]: Finished difference. Result has 136 places, 112 transitions, 1068 flow [2024-06-04 14:06:43,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=136, PETRI_TRANSITIONS=112} [2024-06-04 14:06:43,587 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 104 predicate places. [2024-06-04 14:06:43,587 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 112 transitions, 1068 flow [2024-06-04 14:06:43,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:43,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:43,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:43,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:06:43,588 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)] === [2024-06-04 14:06:43,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash 330603108, now seen corresponding path program 3 times [2024-06-04 14:06:43,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:43,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889894818] [2024-06-04 14:06:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:43,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:44,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:44,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889894818] [2024-06-04 14:06:44,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889894818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:44,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:44,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:44,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918127967] [2024-06-04 14:06:44,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:44,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:44,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:44,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:44,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:44,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 112 transitions, 1068 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:44,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:44,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:44,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:45,028 INFO L124 PetriNetUnfolderBase]: 374/658 cut-off events. [2024-06-04 14:06:45,028 INFO L125 PetriNetUnfolderBase]: For 32371/32371 co-relation queries the response was YES. [2024-06-04 14:06:45,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 658 events. 374/658 cut-off events. For 32371/32371 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2687 event pairs, 59 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4289. Up to 507 conditions per place. [2024-06-04 14:06:45,032 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 97 selfloop transitions, 34 changer transitions 0/133 dead transitions. [2024-06-04 14:06:45,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 133 transitions, 1466 flow [2024-06-04 14:06:45,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 14:06:45,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-04 14:06:45,033 INFO L175 Difference]: Start difference. First operand has 136 places, 112 transitions, 1068 flow. Second operand 9 states and 106 transitions. [2024-06-04 14:06:45,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 133 transitions, 1466 flow [2024-06-04 14:06:45,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 133 transitions, 1400 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:45,076 INFO L231 Difference]: Finished difference. Result has 139 places, 112 transitions, 1076 flow [2024-06-04 14:06:45,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1076, PETRI_PLACES=139, PETRI_TRANSITIONS=112} [2024-06-04 14:06:45,076 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 107 predicate places. [2024-06-04 14:06:45,077 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 112 transitions, 1076 flow [2024-06-04 14:06:45,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:45,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:45,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:45,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:06:45,077 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)] === [2024-06-04 14:06:45,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash 330423618, now seen corresponding path program 4 times [2024-06-04 14:06:45,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:45,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227231826] [2024-06-04 14:06:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:45,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:46,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:46,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227231826] [2024-06-04 14:06:46,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227231826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:46,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:46,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:46,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037084930] [2024-06-04 14:06:46,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:46,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:46,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:46,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:46,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:46,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:46,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 112 transitions, 1076 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:46,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:46,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:46,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:46,627 INFO L124 PetriNetUnfolderBase]: 370/652 cut-off events. [2024-06-04 14:06:46,628 INFO L125 PetriNetUnfolderBase]: For 31861/31861 co-relation queries the response was YES. [2024-06-04 14:06:46,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4278 conditions, 652 events. 370/652 cut-off events. For 31861/31861 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2662 event pairs, 65 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4209. Up to 504 conditions per place. [2024-06-04 14:06:46,631 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 97 selfloop transitions, 31 changer transitions 0/130 dead transitions. [2024-06-04 14:06:46,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 130 transitions, 1374 flow [2024-06-04 14:06:46,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 14:06:46,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:06:46,634 INFO L175 Difference]: Start difference. First operand has 139 places, 112 transitions, 1076 flow. Second operand 9 states and 105 transitions. [2024-06-04 14:06:46,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 130 transitions, 1374 flow [2024-06-04 14:06:46,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 130 transitions, 1301 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:46,678 INFO L231 Difference]: Finished difference. Result has 141 places, 112 transitions, 1070 flow [2024-06-04 14:06:46,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1070, PETRI_PLACES=141, PETRI_TRANSITIONS=112} [2024-06-04 14:06:46,678 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 109 predicate places. [2024-06-04 14:06:46,678 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 112 transitions, 1070 flow [2024-06-04 14:06:46,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:46,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:46,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:46,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:06:46,679 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)] === [2024-06-04 14:06:46,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:46,679 INFO L85 PathProgramCache]: Analyzing trace with hash 502737920, now seen corresponding path program 1 times [2024-06-04 14:06:46,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:46,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588082260] [2024-06-04 14:06:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:46,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:47,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:47,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588082260] [2024-06-04 14:06:47,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588082260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:47,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:47,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:47,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695759896] [2024-06-04 14:06:47,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:47,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:47,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:47,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:47,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:47,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 112 transitions, 1070 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:47,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:47,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:47,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:48,252 INFO L124 PetriNetUnfolderBase]: 376/663 cut-off events. [2024-06-04 14:06:48,252 INFO L125 PetriNetUnfolderBase]: For 33379/33382 co-relation queries the response was YES. [2024-06-04 14:06:48,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4350 conditions, 663 events. 376/663 cut-off events. For 33379/33382 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2723 event pairs, 86 based on Foata normal form. 4/665 useless extension candidates. Maximal degree in co-relation 4280. Up to 597 conditions per place. [2024-06-04 14:06:48,257 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 112 selfloop transitions, 18 changer transitions 0/132 dead transitions. [2024-06-04 14:06:48,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 132 transitions, 1412 flow [2024-06-04 14:06:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:06:48,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-04 14:06:48,258 INFO L175 Difference]: Start difference. First operand has 141 places, 112 transitions, 1070 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:06:48,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 132 transitions, 1412 flow [2024-06-04 14:06:48,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 132 transitions, 1314 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 14:06:48,307 INFO L231 Difference]: Finished difference. Result has 142 places, 114 transitions, 1049 flow [2024-06-04 14:06:48,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1049, PETRI_PLACES=142, PETRI_TRANSITIONS=114} [2024-06-04 14:06:48,308 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2024-06-04 14:06:48,308 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 114 transitions, 1049 flow [2024-06-04 14:06:48,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:48,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:48,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:48,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:06:48,309 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)] === [2024-06-04 14:06:48,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:48,309 INFO L85 PathProgramCache]: Analyzing trace with hash 450255116, now seen corresponding path program 4 times [2024-06-04 14:06:48,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:48,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370289974] [2024-06-04 14:06:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:48,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:49,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:49,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370289974] [2024-06-04 14:06:49,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370289974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:49,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:49,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:49,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092441907] [2024-06-04 14:06:49,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:49,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:49,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:49,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:49,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:49,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:06:49,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 114 transitions, 1049 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:49,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:49,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:06:49,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:50,115 INFO L124 PetriNetUnfolderBase]: 339/621 cut-off events. [2024-06-04 14:06:50,115 INFO L125 PetriNetUnfolderBase]: For 32941/32948 co-relation queries the response was YES. [2024-06-04 14:06:50,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4066 conditions, 621 events. 339/621 cut-off events. For 32941/32948 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2645 event pairs, 61 based on Foata normal form. 2/616 useless extension candidates. Maximal degree in co-relation 3995. Up to 490 conditions per place. [2024-06-04 14:06:50,119 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 94 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2024-06-04 14:06:50,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 128 transitions, 1311 flow [2024-06-04 14:06:50,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:06:50,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:06:50,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-04 14:06:50,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-04 14:06:50,133 INFO L175 Difference]: Start difference. First operand has 142 places, 114 transitions, 1049 flow. Second operand 8 states and 98 transitions. [2024-06-04 14:06:50,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 128 transitions, 1311 flow [2024-06-04 14:06:50,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 128 transitions, 1258 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 14:06:50,186 INFO L231 Difference]: Finished difference. Result has 142 places, 114 transitions, 1040 flow [2024-06-04 14:06:50,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1040, PETRI_PLACES=142, PETRI_TRANSITIONS=114} [2024-06-04 14:06:50,186 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2024-06-04 14:06:50,186 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 114 transitions, 1040 flow [2024-06-04 14:06:50,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:50,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:50,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:50,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:06:50,186 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)] === [2024-06-04 14:06:50,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash -898202628, now seen corresponding path program 5 times [2024-06-04 14:06:50,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:50,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680983244] [2024-06-04 14:06:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:50,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:51,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:51,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680983244] [2024-06-04 14:06:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680983244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:51,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:51,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:51,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064620191] [2024-06-04 14:06:51,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:51,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:51,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:51,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:51,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:51,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 114 transitions, 1040 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:51,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:51,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:51,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:51,738 INFO L124 PetriNetUnfolderBase]: 389/685 cut-off events. [2024-06-04 14:06:51,738 INFO L125 PetriNetUnfolderBase]: For 36493/36496 co-relation queries the response was YES. [2024-06-04 14:06:51,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4461 conditions, 685 events. 389/685 cut-off events. For 36493/36496 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2833 event pairs, 71 based on Foata normal form. 2/684 useless extension candidates. Maximal degree in co-relation 4389. Up to 422 conditions per place. [2024-06-04 14:06:51,742 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 94 selfloop transitions, 45 changer transitions 0/141 dead transitions. [2024-06-04 14:06:51,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 141 transitions, 1644 flow [2024-06-04 14:06:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 14:06:51,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-04 14:06:51,743 INFO L175 Difference]: Start difference. First operand has 142 places, 114 transitions, 1040 flow. Second operand 9 states and 113 transitions. [2024-06-04 14:06:51,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 141 transitions, 1644 flow [2024-06-04 14:06:51,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 141 transitions, 1572 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 14:06:51,794 INFO L231 Difference]: Finished difference. Result has 144 places, 120 transitions, 1157 flow [2024-06-04 14:06:51,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1157, PETRI_PLACES=144, PETRI_TRANSITIONS=120} [2024-06-04 14:06:51,794 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 112 predicate places. [2024-06-04 14:06:51,794 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 120 transitions, 1157 flow [2024-06-04 14:06:51,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:51,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:51,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:51,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:06:51,795 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)] === [2024-06-04 14:06:51,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:51,795 INFO L85 PathProgramCache]: Analyzing trace with hash 450433056, now seen corresponding path program 6 times [2024-06-04 14:06:51,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:51,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906986641] [2024-06-04 14:06:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:51,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:52,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:52,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906986641] [2024-06-04 14:06:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906986641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:52,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:52,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:52,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611732702] [2024-06-04 14:06:52,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:52,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:52,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:52,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:52,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:52,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:52,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 120 transitions, 1157 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:52,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:52,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:52,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:53,253 INFO L124 PetriNetUnfolderBase]: 395/695 cut-off events. [2024-06-04 14:06:53,254 INFO L125 PetriNetUnfolderBase]: For 38112/38115 co-relation queries the response was YES. [2024-06-04 14:06:53,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4608 conditions, 695 events. 395/695 cut-off events. For 38112/38115 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2895 event pairs, 71 based on Foata normal form. 2/694 useless extension candidates. Maximal degree in co-relation 4535. Up to 428 conditions per place. [2024-06-04 14:06:53,258 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 94 selfloop transitions, 46 changer transitions 0/142 dead transitions. [2024-06-04 14:06:53,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 142 transitions, 1707 flow [2024-06-04 14:06:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:53,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 14:06:53,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-04 14:06:53,261 INFO L175 Difference]: Start difference. First operand has 144 places, 120 transitions, 1157 flow. Second operand 9 states and 113 transitions. [2024-06-04 14:06:53,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 142 transitions, 1707 flow [2024-06-04 14:06:53,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1594 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:53,314 INFO L231 Difference]: Finished difference. Result has 147 places, 122 transitions, 1175 flow [2024-06-04 14:06:53,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1175, PETRI_PLACES=147, PETRI_TRANSITIONS=122} [2024-06-04 14:06:53,315 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2024-06-04 14:06:53,315 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 122 transitions, 1175 flow [2024-06-04 14:06:53,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:53,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:53,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:53,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:06:53,315 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)] === [2024-06-04 14:06:53,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash -181723106, now seen corresponding path program 7 times [2024-06-04 14:06:53,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:53,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52782978] [2024-06-04 14:06:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:53,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:54,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:54,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52782978] [2024-06-04 14:06:54,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52782978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:54,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:54,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:54,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158730450] [2024-06-04 14:06:54,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:54,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:54,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:54,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:54,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:54,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:54,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 122 transitions, 1175 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:54,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:54,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:54,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:54,646 INFO L124 PetriNetUnfolderBase]: 411/721 cut-off events. [2024-06-04 14:06:54,646 INFO L125 PetriNetUnfolderBase]: For 42038/42041 co-relation queries the response was YES. [2024-06-04 14:06:54,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4851 conditions, 721 events. 411/721 cut-off events. For 42038/42041 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3037 event pairs, 63 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 4778. Up to 443 conditions per place. [2024-06-04 14:06:54,651 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 92 selfloop transitions, 54 changer transitions 0/148 dead transitions. [2024-06-04 14:06:54,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 148 transitions, 1877 flow [2024-06-04 14:06:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 14:06:54,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-04 14:06:54,652 INFO L175 Difference]: Start difference. First operand has 147 places, 122 transitions, 1175 flow. Second operand 9 states and 113 transitions. [2024-06-04 14:06:54,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 148 transitions, 1877 flow [2024-06-04 14:06:54,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 148 transitions, 1768 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:54,717 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 1247 flow [2024-06-04 14:06:54,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1247, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2024-06-04 14:06:54,718 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 118 predicate places. [2024-06-04 14:06:54,718 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 1247 flow [2024-06-04 14:06:54,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:54,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:54,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:54,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:06:54,718 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)] === [2024-06-04 14:06:54,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:54,718 INFO L85 PathProgramCache]: Analyzing trace with hash -181483538, now seen corresponding path program 2 times [2024-06-04 14:06:54,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:54,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381671920] [2024-06-04 14:06:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:54,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:55,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:55,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381671920] [2024-06-04 14:06:55,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381671920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:55,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:55,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:55,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842927608] [2024-06-04 14:06:55,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:55,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:55,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:55,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:55,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:55,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 1247 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:55,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:55,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:55,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:56,190 INFO L124 PetriNetUnfolderBase]: 417/731 cut-off events. [2024-06-04 14:06:56,191 INFO L125 PetriNetUnfolderBase]: For 43817/43820 co-relation queries the response was YES. [2024-06-04 14:06:56,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 731 events. 417/731 cut-off events. For 43817/43820 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3086 event pairs, 85 based on Foata normal form. 4/732 useless extension candidates. Maximal degree in co-relation 4876. Up to 604 conditions per place. [2024-06-04 14:06:56,195 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 107 selfloop transitions, 35 changer transitions 0/144 dead transitions. [2024-06-04 14:06:56,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 144 transitions, 1613 flow [2024-06-04 14:06:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:06:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:06:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:06:56,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:06:56,196 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 1247 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:06:56,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 144 transitions, 1613 flow [2024-06-04 14:06:56,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 144 transitions, 1483 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 14:06:56,264 INFO L231 Difference]: Finished difference. Result has 154 places, 128 transitions, 1232 flow [2024-06-04 14:06:56,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1232, PETRI_PLACES=154, PETRI_TRANSITIONS=128} [2024-06-04 14:06:56,265 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 122 predicate places. [2024-06-04 14:06:56,265 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 128 transitions, 1232 flow [2024-06-04 14:06:56,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:56,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:56,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:56,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:06:56,265 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)] === [2024-06-04 14:06:56,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash 450260076, now seen corresponding path program 8 times [2024-06-04 14:06:56,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:56,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269956410] [2024-06-04 14:06:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:56,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:57,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:57,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269956410] [2024-06-04 14:06:57,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269956410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:57,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:57,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:06:57,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95833291] [2024-06-04 14:06:57,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:57,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:06:57,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:57,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:06:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:06:57,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:57,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 128 transitions, 1232 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:57,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:57,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:57,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:57,571 INFO L124 PetriNetUnfolderBase]: 413/725 cut-off events. [2024-06-04 14:06:57,571 INFO L125 PetriNetUnfolderBase]: For 42857/42860 co-relation queries the response was YES. [2024-06-04 14:06:57,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 725 events. 413/725 cut-off events. For 42857/42860 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3061 event pairs, 80 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 4698. Up to 450 conditions per place. [2024-06-04 14:06:57,576 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 90 selfloop transitions, 53 changer transitions 0/145 dead transitions. [2024-06-04 14:06:57,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 145 transitions, 1658 flow [2024-06-04 14:06:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:57,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:06:57,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:06:57,577 INFO L175 Difference]: Start difference. First operand has 154 places, 128 transitions, 1232 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:06:57,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 145 transitions, 1658 flow [2024-06-04 14:06:57,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 145 transitions, 1549 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 14:06:57,637 INFO L231 Difference]: Finished difference. Result has 155 places, 128 transitions, 1234 flow [2024-06-04 14:06:57,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=155, PETRI_TRANSITIONS=128} [2024-06-04 14:06:57,638 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 123 predicate places. [2024-06-04 14:06:57,638 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 128 transitions, 1234 flow [2024-06-04 14:06:57,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:57,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:57,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:57,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:06:57,639 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)] === [2024-06-04 14:06:57,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:57,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1969692696, now seen corresponding path program 9 times [2024-06-04 14:06:57,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:57,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232230211] [2024-06-04 14:06:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:57,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:06:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:06:58,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:06:58,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232230211] [2024-06-04 14:06:58,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232230211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:06:58,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:06:58,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:06:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765361845] [2024-06-04 14:06:58,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:06:58,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:06:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:06:58,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:06:58,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:06:58,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:06:58,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 128 transitions, 1234 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:58,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:06:58,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:06:58,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:06:59,108 INFO L124 PetriNetUnfolderBase]: 409/719 cut-off events. [2024-06-04 14:06:59,109 INFO L125 PetriNetUnfolderBase]: For 41789/41792 co-relation queries the response was YES. [2024-06-04 14:06:59,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4686 conditions, 719 events. 409/719 cut-off events. For 41789/41792 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3032 event pairs, 65 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 4610. Up to 447 conditions per place. [2024-06-04 14:06:59,113 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 89 selfloop transitions, 55 changer transitions 0/146 dead transitions. [2024-06-04 14:06:59,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 146 transitions, 1668 flow [2024-06-04 14:06:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:06:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:06:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:06:59,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:06:59,115 INFO L175 Difference]: Start difference. First operand has 155 places, 128 transitions, 1234 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:06:59,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 146 transitions, 1668 flow [2024-06-04 14:06:59,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 146 transitions, 1544 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:06:59,189 INFO L231 Difference]: Finished difference. Result has 156 places, 128 transitions, 1225 flow [2024-06-04 14:06:59,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1225, PETRI_PLACES=156, PETRI_TRANSITIONS=128} [2024-06-04 14:06:59,189 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-04 14:06:59,189 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 128 transitions, 1225 flow [2024-06-04 14:06:59,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:06:59,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:06:59,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:06:59,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:06:59,189 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)] === [2024-06-04 14:06:59,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:06:59,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1686609740, now seen corresponding path program 3 times [2024-06-04 14:06:59,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:06:59,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201721097] [2024-06-04 14:06:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:06:59,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:06:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:00,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:00,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201721097] [2024-06-04 14:07:00,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201721097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:00,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:00,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:00,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812440643] [2024-06-04 14:07:00,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:00,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:00,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:00,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:00,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:00,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:00,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 128 transitions, 1225 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:00,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:00,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:00,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:00,706 INFO L124 PetriNetUnfolderBase]: 415/729 cut-off events. [2024-06-04 14:07:00,706 INFO L125 PetriNetUnfolderBase]: For 43554/43557 co-relation queries the response was YES. [2024-06-04 14:07:00,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4757 conditions, 729 events. 415/729 cut-off events. For 43554/43557 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3081 event pairs, 89 based on Foata normal form. 4/730 useless extension candidates. Maximal degree in co-relation 4680. Up to 602 conditions per place. [2024-06-04 14:07:00,710 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 111 selfloop transitions, 33 changer transitions 0/146 dead transitions. [2024-06-04 14:07:00,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 146 transitions, 1599 flow [2024-06-04 14:07:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:00,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:07:00,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:07:00,712 INFO L175 Difference]: Start difference. First operand has 156 places, 128 transitions, 1225 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:07:00,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 146 transitions, 1599 flow [2024-06-04 14:07:00,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 146 transitions, 1475 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:00,816 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 1216 flow [2024-06-04 14:07:00,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1216, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2024-06-04 14:07:00,816 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 126 predicate places. [2024-06-04 14:07:00,816 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 1216 flow [2024-06-04 14:07:00,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:00,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:00,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:00,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:07:00,817 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)] === [2024-06-04 14:07:00,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:00,817 INFO L85 PathProgramCache]: Analyzing trace with hash 103607404, now seen corresponding path program 10 times [2024-06-04 14:07:00,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:00,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852829880] [2024-06-04 14:07:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:00,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:01,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:01,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852829880] [2024-06-04 14:07:01,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852829880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:01,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:01,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:01,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727024604] [2024-06-04 14:07:01,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:01,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:01,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:01,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:01,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 1216 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:01,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:01,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:01,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:02,218 INFO L124 PetriNetUnfolderBase]: 411/723 cut-off events. [2024-06-04 14:07:02,218 INFO L125 PetriNetUnfolderBase]: For 42317/42320 co-relation queries the response was YES. [2024-06-04 14:07:02,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4586 conditions, 723 events. 411/723 cut-off events. For 42317/42320 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3055 event pairs, 58 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 4508. Up to 454 conditions per place. [2024-06-04 14:07:02,222 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 84 selfloop transitions, 62 changer transitions 0/148 dead transitions. [2024-06-04 14:07:02,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 148 transitions, 1554 flow [2024-06-04 14:07:02,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 14:07:02,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-04 14:07:02,223 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 1216 flow. Second operand 9 states and 107 transitions. [2024-06-04 14:07:02,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 148 transitions, 1554 flow [2024-06-04 14:07:02,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 148 transitions, 1445 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:02,304 INFO L231 Difference]: Finished difference. Result has 159 places, 130 transitions, 1236 flow [2024-06-04 14:07:02,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1236, PETRI_PLACES=159, PETRI_TRANSITIONS=130} [2024-06-04 14:07:02,304 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 127 predicate places. [2024-06-04 14:07:02,304 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 130 transitions, 1236 flow [2024-06-04 14:07:02,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:02,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:02,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:02,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:07:02,305 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)] === [2024-06-04 14:07:02,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash 113735662, now seen corresponding path program 4 times [2024-06-04 14:07:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:02,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018011862] [2024-06-04 14:07:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:02,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:03,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:03,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018011862] [2024-06-04 14:07:03,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018011862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:03,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:03,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:03,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460573612] [2024-06-04 14:07:03,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:03,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:03,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:03,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:03,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:03,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:03,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 130 transitions, 1236 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:03,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:03,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:03,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:03,602 INFO L124 PetriNetUnfolderBase]: 407/715 cut-off events. [2024-06-04 14:07:03,602 INFO L125 PetriNetUnfolderBase]: For 40625/40625 co-relation queries the response was YES. [2024-06-04 14:07:03,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4529 conditions, 715 events. 407/715 cut-off events. For 40625/40625 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3014 event pairs, 95 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 4450. Up to 671 conditions per place. [2024-06-04 14:07:03,606 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 122 selfloop transitions, 18 changer transitions 0/142 dead transitions. [2024-06-04 14:07:03,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 142 transitions, 1546 flow [2024-06-04 14:07:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-04 14:07:03,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30606060606060603 [2024-06-04 14:07:03,607 INFO L175 Difference]: Start difference. First operand has 159 places, 130 transitions, 1236 flow. Second operand 10 states and 101 transitions. [2024-06-04 14:07:03,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 142 transitions, 1546 flow [2024-06-04 14:07:03,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 142 transitions, 1396 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:03,685 INFO L231 Difference]: Finished difference. Result has 160 places, 130 transitions, 1127 flow [2024-06-04 14:07:03,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1127, PETRI_PLACES=160, PETRI_TRANSITIONS=130} [2024-06-04 14:07:03,686 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 128 predicate places. [2024-06-04 14:07:03,686 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 130 transitions, 1127 flow [2024-06-04 14:07:03,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:03,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:03,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:03,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:07:03,686 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)] === [2024-06-04 14:07:03,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:03,686 INFO L85 PathProgramCache]: Analyzing trace with hash 103616332, now seen corresponding path program 5 times [2024-06-04 14:07:03,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:03,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748888881] [2024-06-04 14:07:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:03,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:04,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:04,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748888881] [2024-06-04 14:07:04,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748888881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:04,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:04,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:04,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337170197] [2024-06-04 14:07:04,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:04,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:04,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:04,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:04,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:04,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:04,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 130 transitions, 1127 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:04,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:04,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:04,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:05,241 INFO L124 PetriNetUnfolderBase]: 408/719 cut-off events. [2024-06-04 14:07:05,241 INFO L125 PetriNetUnfolderBase]: For 40688/40691 co-relation queries the response was YES. [2024-06-04 14:07:05,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4384 conditions, 719 events. 408/719 cut-off events. For 40688/40691 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3053 event pairs, 81 based on Foata normal form. 4/720 useless extension candidates. Maximal degree in co-relation 4304. Up to 592 conditions per place. [2024-06-04 14:07:05,246 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 108 selfloop transitions, 38 changer transitions 0/148 dead transitions. [2024-06-04 14:07:05,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 148 transitions, 1509 flow [2024-06-04 14:07:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:07:05,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-04 14:07:05,247 INFO L175 Difference]: Start difference. First operand has 160 places, 130 transitions, 1127 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:07:05,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 148 transitions, 1509 flow [2024-06-04 14:07:05,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 148 transitions, 1467 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:05,327 INFO L231 Difference]: Finished difference. Result has 161 places, 132 transitions, 1214 flow [2024-06-04 14:07:05,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1214, PETRI_PLACES=161, PETRI_TRANSITIONS=132} [2024-06-04 14:07:05,328 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 129 predicate places. [2024-06-04 14:07:05,328 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 132 transitions, 1214 flow [2024-06-04 14:07:05,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:05,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:05,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:05,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:07:05,328 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)] === [2024-06-04 14:07:05,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:05,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1114416653, now seen corresponding path program 1 times [2024-06-04 14:07:05,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:05,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453379048] [2024-06-04 14:07:05,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:05,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:06,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:06,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453379048] [2024-06-04 14:07:06,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453379048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:06,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:06,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:06,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305517972] [2024-06-04 14:07:06,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:06,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:06,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:06,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:06,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:06,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:06,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 132 transitions, 1214 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:06,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:06,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:06,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:07,009 INFO L124 PetriNetUnfolderBase]: 445/790 cut-off events. [2024-06-04 14:07:07,009 INFO L125 PetriNetUnfolderBase]: For 42251/42251 co-relation queries the response was YES. [2024-06-04 14:07:07,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4726 conditions, 790 events. 445/790 cut-off events. For 42251/42251 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3464 event pairs, 81 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 4645. Up to 691 conditions per place. [2024-06-04 14:07:07,014 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 144 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-04 14:07:07,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 165 transitions, 1678 flow [2024-06-04 14:07:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:07,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:07:07,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:07:07,015 INFO L175 Difference]: Start difference. First operand has 161 places, 132 transitions, 1214 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:07:07,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 165 transitions, 1678 flow [2024-06-04 14:07:07,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 165 transitions, 1567 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:07,091 INFO L231 Difference]: Finished difference. Result has 167 places, 143 transitions, 1252 flow [2024-06-04 14:07:07,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1252, PETRI_PLACES=167, PETRI_TRANSITIONS=143} [2024-06-04 14:07:07,091 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2024-06-04 14:07:07,091 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 143 transitions, 1252 flow [2024-06-04 14:07:07,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:07,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:07,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:07,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:07:07,092 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)] === [2024-06-04 14:07:07,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:07,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1012674205, now seen corresponding path program 2 times [2024-06-04 14:07:07,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:07,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772683744] [2024-06-04 14:07:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:07,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:08,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:08,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772683744] [2024-06-04 14:07:08,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772683744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:08,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:08,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:08,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324150385] [2024-06-04 14:07:08,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:08,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:08,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:08,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:08,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:08,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 143 transitions, 1252 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:08,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:08,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:08,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:08,682 INFO L124 PetriNetUnfolderBase]: 449/798 cut-off events. [2024-06-04 14:07:08,683 INFO L125 PetriNetUnfolderBase]: For 43596/43596 co-relation queries the response was YES. [2024-06-04 14:07:08,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 798 events. 449/798 cut-off events. For 43596/43596 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3502 event pairs, 66 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 4690. Up to 662 conditions per place. [2024-06-04 14:07:08,687 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 138 selfloop transitions, 22 changer transitions 0/162 dead transitions. [2024-06-04 14:07:08,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 162 transitions, 1634 flow [2024-06-04 14:07:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:08,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 14:07:08,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-04 14:07:08,688 INFO L175 Difference]: Start difference. First operand has 167 places, 143 transitions, 1252 flow. Second operand 9 states and 96 transitions. [2024-06-04 14:07:08,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 162 transitions, 1634 flow [2024-06-04 14:07:08,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 162 transitions, 1607 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-04 14:07:08,767 INFO L231 Difference]: Finished difference. Result has 173 places, 144 transitions, 1291 flow [2024-06-04 14:07:08,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1291, PETRI_PLACES=173, PETRI_TRANSITIONS=144} [2024-06-04 14:07:08,768 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2024-06-04 14:07:08,768 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 144 transitions, 1291 flow [2024-06-04 14:07:08,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:08,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:08,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:08,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:07:08,768 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)] === [2024-06-04 14:07:08,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:08,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2007668939, now seen corresponding path program 3 times [2024-06-04 14:07:08,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:08,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70758336] [2024-06-04 14:07:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:08,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:10,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:10,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70758336] [2024-06-04 14:07:10,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70758336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:10,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:10,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261275252] [2024-06-04 14:07:10,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:10,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:10,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:10,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:10,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:10,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 144 transitions, 1291 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:10,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:10,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:10,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:10,479 INFO L124 PetriNetUnfolderBase]: 453/806 cut-off events. [2024-06-04 14:07:10,479 INFO L125 PetriNetUnfolderBase]: For 45228/45228 co-relation queries the response was YES. [2024-06-04 14:07:10,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4876 conditions, 806 events. 453/806 cut-off events. For 45228/45228 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3576 event pairs, 91 based on Foata normal form. 2/807 useless extension candidates. Maximal degree in co-relation 4789. Up to 703 conditions per place. [2024-06-04 14:07:10,485 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 140 selfloop transitions, 21 changer transitions 0/163 dead transitions. [2024-06-04 14:07:10,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 163 transitions, 1677 flow [2024-06-04 14:07:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:10,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:07:10,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:07:10,486 INFO L175 Difference]: Start difference. First operand has 173 places, 144 transitions, 1291 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:07:10,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 163 transitions, 1677 flow [2024-06-04 14:07:10,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 163 transitions, 1621 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:10,573 INFO L231 Difference]: Finished difference. Result has 175 places, 145 transitions, 1299 flow [2024-06-04 14:07:10,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1299, PETRI_PLACES=175, PETRI_TRANSITIONS=145} [2024-06-04 14:07:10,573 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2024-06-04 14:07:10,573 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 145 transitions, 1299 flow [2024-06-04 14:07:10,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:10,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:10,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:10,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:07:10,573 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)] === [2024-06-04 14:07:10,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash -969235909, now seen corresponding path program 4 times [2024-06-04 14:07:10,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:10,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613548945] [2024-06-04 14:07:10,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:10,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:11,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:11,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613548945] [2024-06-04 14:07:11,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613548945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:11,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:11,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:11,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484568351] [2024-06-04 14:07:11,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:11,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:11,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:11,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:11,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:11,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:11,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 145 transitions, 1299 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:11,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:11,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:11,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:11,974 INFO L124 PetriNetUnfolderBase]: 457/814 cut-off events. [2024-06-04 14:07:11,975 INFO L125 PetriNetUnfolderBase]: For 45684/45684 co-relation queries the response was YES. [2024-06-04 14:07:11,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4901 conditions, 814 events. 457/814 cut-off events. For 45684/45684 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3636 event pairs, 89 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 4813. Up to 697 conditions per place. [2024-06-04 14:07:11,980 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 140 selfloop transitions, 22 changer transitions 0/164 dead transitions. [2024-06-04 14:07:11,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 164 transitions, 1687 flow [2024-06-04 14:07:11,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:07:11,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-04 14:07:11,981 INFO L175 Difference]: Start difference. First operand has 175 places, 145 transitions, 1299 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:07:11,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 164 transitions, 1687 flow [2024-06-04 14:07:12,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 164 transitions, 1635 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:12,066 INFO L231 Difference]: Finished difference. Result has 177 places, 146 transitions, 1313 flow [2024-06-04 14:07:12,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1313, PETRI_PLACES=177, PETRI_TRANSITIONS=146} [2024-06-04 14:07:12,067 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 145 predicate places. [2024-06-04 14:07:12,067 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 146 transitions, 1313 flow [2024-06-04 14:07:12,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:12,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:12,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:12,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:07:12,068 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)] === [2024-06-04 14:07:12,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash -965507167, now seen corresponding path program 1 times [2024-06-04 14:07:12,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:12,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793859856] [2024-06-04 14:07:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:12,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:13,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:13,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793859856] [2024-06-04 14:07:13,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793859856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:13,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:13,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:13,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156653892] [2024-06-04 14:07:13,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:13,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:13,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:13,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:13,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 146 transitions, 1313 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:13,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:13,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:13,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:13,557 INFO L124 PetriNetUnfolderBase]: 463/824 cut-off events. [2024-06-04 14:07:13,558 INFO L125 PetriNetUnfolderBase]: For 47236/47236 co-relation queries the response was YES. [2024-06-04 14:07:13,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4983 conditions, 824 events. 463/824 cut-off events. For 47236/47236 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3698 event pairs, 92 based on Foata normal form. 2/825 useless extension candidates. Maximal degree in co-relation 4894. Up to 711 conditions per place. [2024-06-04 14:07:13,563 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 142 selfloop transitions, 24 changer transitions 0/168 dead transitions. [2024-06-04 14:07:13,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 168 transitions, 1731 flow [2024-06-04 14:07:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:13,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:07:13,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:07:13,564 INFO L175 Difference]: Start difference. First operand has 177 places, 146 transitions, 1313 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:07:13,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 168 transitions, 1731 flow [2024-06-04 14:07:13,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 168 transitions, 1675 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:13,677 INFO L231 Difference]: Finished difference. Result has 180 places, 148 transitions, 1348 flow [2024-06-04 14:07:13,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1348, PETRI_PLACES=180, PETRI_TRANSITIONS=148} [2024-06-04 14:07:13,677 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-04 14:07:13,678 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 148 transitions, 1348 flow [2024-06-04 14:07:13,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:13,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:13,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:13,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:07:13,678 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)] === [2024-06-04 14:07:13,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:13,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1680884003, now seen corresponding path program 2 times [2024-06-04 14:07:13,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:13,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866353183] [2024-06-04 14:07:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:13,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:14,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:14,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866353183] [2024-06-04 14:07:14,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866353183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:14,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:14,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:14,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838191697] [2024-06-04 14:07:14,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:14,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:14,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:14,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:14,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:14,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:14,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 148 transitions, 1348 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:14,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:14,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:14,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:15,250 INFO L124 PetriNetUnfolderBase]: 469/833 cut-off events. [2024-06-04 14:07:15,250 INFO L125 PetriNetUnfolderBase]: For 48776/48776 co-relation queries the response was YES. [2024-06-04 14:07:15,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 833 events. 469/833 cut-off events. For 48776/48776 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3736 event pairs, 80 based on Foata normal form. 2/834 useless extension candidates. Maximal degree in co-relation 4998. Up to 638 conditions per place. [2024-06-04 14:07:15,256 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 127 selfloop transitions, 42 changer transitions 0/171 dead transitions. [2024-06-04 14:07:15,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 171 transitions, 1778 flow [2024-06-04 14:07:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:07:15,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-04 14:07:15,258 INFO L175 Difference]: Start difference. First operand has 180 places, 148 transitions, 1348 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:07:15,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 171 transitions, 1778 flow [2024-06-04 14:07:15,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 171 transitions, 1703 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:15,377 INFO L231 Difference]: Finished difference. Result has 182 places, 150 transitions, 1404 flow [2024-06-04 14:07:15,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1404, PETRI_PLACES=182, PETRI_TRANSITIONS=150} [2024-06-04 14:07:15,377 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2024-06-04 14:07:15,377 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 150 transitions, 1404 flow [2024-06-04 14:07:15,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:15,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:15,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:15,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:07:15,378 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)] === [2024-06-04 14:07:15,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:15,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1680876284, now seen corresponding path program 1 times [2024-06-04 14:07:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:15,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537461301] [2024-06-04 14:07:15,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:15,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:16,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:16,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537461301] [2024-06-04 14:07:16,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537461301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:16,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:16,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:16,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723679503] [2024-06-04 14:07:16,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:16,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:16,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:16,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:16,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:16,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 150 transitions, 1404 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:16,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:16,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:16,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:17,046 INFO L124 PetriNetUnfolderBase]: 467/831 cut-off events. [2024-06-04 14:07:17,047 INFO L125 PetriNetUnfolderBase]: For 47310/47310 co-relation queries the response was YES. [2024-06-04 14:07:17,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5068 conditions, 831 events. 467/831 cut-off events. For 47310/47310 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3723 event pairs, 100 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 4977. Up to 736 conditions per place. [2024-06-04 14:07:17,052 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 136 selfloop transitions, 30 changer transitions 0/168 dead transitions. [2024-06-04 14:07:17,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 168 transitions, 1792 flow [2024-06-04 14:07:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:07:17,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-04 14:07:17,053 INFO L175 Difference]: Start difference. First operand has 182 places, 150 transitions, 1404 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:07:17,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 168 transitions, 1792 flow [2024-06-04 14:07:17,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 168 transitions, 1671 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:17,168 INFO L231 Difference]: Finished difference. Result has 184 places, 150 transitions, 1351 flow [2024-06-04 14:07:17,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1351, PETRI_PLACES=184, PETRI_TRANSITIONS=150} [2024-06-04 14:07:17,169 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2024-06-04 14:07:17,169 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 150 transitions, 1351 flow [2024-06-04 14:07:17,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:17,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:17,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:17,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:07:17,170 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)] === [2024-06-04 14:07:17,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:17,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1681091765, now seen corresponding path program 5 times [2024-06-04 14:07:17,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:17,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084424136] [2024-06-04 14:07:17,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:17,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:18,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:18,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084424136] [2024-06-04 14:07:18,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084424136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:18,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:18,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:18,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358003401] [2024-06-04 14:07:18,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:18,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:18,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:18,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:18,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:18,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:18,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 150 transitions, 1351 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:18,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:18,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:18,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:18,767 INFO L124 PetriNetUnfolderBase]: 471/838 cut-off events. [2024-06-04 14:07:18,767 INFO L125 PetriNetUnfolderBase]: For 50516/50516 co-relation queries the response was YES. [2024-06-04 14:07:18,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5051 conditions, 838 events. 471/838 cut-off events. For 50516/50516 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3789 event pairs, 80 based on Foata normal form. 2/839 useless extension candidates. Maximal degree in co-relation 4959. Up to 688 conditions per place. [2024-06-04 14:07:18,773 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 136 selfloop transitions, 31 changer transitions 0/169 dead transitions. [2024-06-04 14:07:18,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 169 transitions, 1749 flow [2024-06-04 14:07:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 14:07:18,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-04 14:07:18,774 INFO L175 Difference]: Start difference. First operand has 184 places, 150 transitions, 1351 flow. Second operand 9 states and 102 transitions. [2024-06-04 14:07:18,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 169 transitions, 1749 flow [2024-06-04 14:07:18,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 169 transitions, 1558 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-04 14:07:18,899 INFO L231 Difference]: Finished difference. Result has 181 places, 151 transitions, 1246 flow [2024-06-04 14:07:18,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1246, PETRI_PLACES=181, PETRI_TRANSITIONS=151} [2024-06-04 14:07:18,899 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-04 14:07:18,899 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 151 transitions, 1246 flow [2024-06-04 14:07:18,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:18,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:18,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:18,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:07:18,900 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)] === [2024-06-04 14:07:18,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:18,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1705032321, now seen corresponding path program 6 times [2024-06-04 14:07:18,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:18,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807758721] [2024-06-04 14:07:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:18,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:20,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:20,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807758721] [2024-06-04 14:07:20,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807758721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:20,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:20,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:20,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817612076] [2024-06-04 14:07:20,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:20,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:20,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:20,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:20,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:20,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:20,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 151 transitions, 1246 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:20,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:20,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:20,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:20,773 INFO L124 PetriNetUnfolderBase]: 475/846 cut-off events. [2024-06-04 14:07:20,773 INFO L125 PetriNetUnfolderBase]: For 50664/50664 co-relation queries the response was YES. [2024-06-04 14:07:20,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 846 events. 475/846 cut-off events. For 50664/50664 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3834 event pairs, 84 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 4930. Up to 696 conditions per place. [2024-06-04 14:07:20,779 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 137 selfloop transitions, 30 changer transitions 0/169 dead transitions. [2024-06-04 14:07:20,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 169 transitions, 1642 flow [2024-06-04 14:07:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:20,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:20,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 14:07:20,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-04 14:07:20,780 INFO L175 Difference]: Start difference. First operand has 181 places, 151 transitions, 1246 flow. Second operand 9 states and 102 transitions. [2024-06-04 14:07:20,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 169 transitions, 1642 flow [2024-06-04 14:07:20,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 169 transitions, 1566 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:20,893 INFO L231 Difference]: Finished difference. Result has 183 places, 152 transitions, 1256 flow [2024-06-04 14:07:20,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1256, PETRI_PLACES=183, PETRI_TRANSITIONS=152} [2024-06-04 14:07:20,894 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 151 predicate places. [2024-06-04 14:07:20,894 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 152 transitions, 1256 flow [2024-06-04 14:07:20,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:20,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:20,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:20,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:07:20,895 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)] === [2024-06-04 14:07:20,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:20,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1686448193, now seen corresponding path program 3 times [2024-06-04 14:07:20,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:20,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064623615] [2024-06-04 14:07:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:20,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:22,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064623615] [2024-06-04 14:07:22,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064623615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:22,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:22,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:22,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503063554] [2024-06-04 14:07:22,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:22,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:22,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:22,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:22,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:22,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:22,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 152 transitions, 1256 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:22,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:22,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:22,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:22,799 INFO L124 PetriNetUnfolderBase]: 481/856 cut-off events. [2024-06-04 14:07:22,799 INFO L125 PetriNetUnfolderBase]: For 52379/52379 co-relation queries the response was YES. [2024-06-04 14:07:22,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5097 conditions, 856 events. 481/856 cut-off events. For 52379/52379 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3884 event pairs, 87 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 5004. Up to 661 conditions per place. [2024-06-04 14:07:22,806 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 39 changer transitions 0/173 dead transitions. [2024-06-04 14:07:22,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 173 transitions, 1686 flow [2024-06-04 14:07:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:07:22,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-04 14:07:22,807 INFO L175 Difference]: Start difference. First operand has 183 places, 152 transitions, 1256 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:07:22,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 173 transitions, 1686 flow [2024-06-04 14:07:22,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 173 transitions, 1610 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:22,924 INFO L231 Difference]: Finished difference. Result has 186 places, 154 transitions, 1309 flow [2024-06-04 14:07:22,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1309, PETRI_PLACES=186, PETRI_TRANSITIONS=154} [2024-06-04 14:07:22,925 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2024-06-04 14:07:22,925 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 154 transitions, 1309 flow [2024-06-04 14:07:22,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:22,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:22,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:22,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:07:22,925 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)] === [2024-06-04 14:07:22,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1680876563, now seen corresponding path program 4 times [2024-06-04 14:07:22,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:22,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400062452] [2024-06-04 14:07:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:22,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:24,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:24,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400062452] [2024-06-04 14:07:24,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400062452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:24,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:24,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:24,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144882692] [2024-06-04 14:07:24,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:24,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:24,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:24,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:24,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:24,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:24,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 154 transitions, 1309 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:24,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:24,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:24,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:24,719 INFO L124 PetriNetUnfolderBase]: 497/882 cut-off events. [2024-06-04 14:07:24,719 INFO L125 PetriNetUnfolderBase]: For 58586/58586 co-relation queries the response was YES. [2024-06-04 14:07:24,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 882 events. 497/882 cut-off events. For 58586/58586 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4038 event pairs, 81 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 5381. Up to 641 conditions per place. [2024-06-04 14:07:24,725 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 127 selfloop transitions, 52 changer transitions 0/181 dead transitions. [2024-06-04 14:07:24,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 181 transitions, 1947 flow [2024-06-04 14:07:24,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:24,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:24,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:07:24,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-04 14:07:24,726 INFO L175 Difference]: Start difference. First operand has 186 places, 154 transitions, 1309 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:07:24,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 181 transitions, 1947 flow [2024-06-04 14:07:24,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 181 transitions, 1834 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:24,840 INFO L231 Difference]: Finished difference. Result has 188 places, 158 transitions, 1402 flow [2024-06-04 14:07:24,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1402, PETRI_PLACES=188, PETRI_TRANSITIONS=158} [2024-06-04 14:07:24,841 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 156 predicate places. [2024-06-04 14:07:24,841 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 158 transitions, 1402 flow [2024-06-04 14:07:24,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:24,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:24,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:24,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:07:24,841 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)] === [2024-06-04 14:07:24,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1686602015, now seen corresponding path program 7 times [2024-06-04 14:07:24,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:24,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72386213] [2024-06-04 14:07:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:24,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:26,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:26,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72386213] [2024-06-04 14:07:26,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72386213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:26,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:26,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:26,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394028186] [2024-06-04 14:07:26,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:26,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:26,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:26,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:26,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:26,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:26,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 158 transitions, 1402 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:26,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:26,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:26,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:26,517 INFO L124 PetriNetUnfolderBase]: 501/890 cut-off events. [2024-06-04 14:07:26,517 INFO L125 PetriNetUnfolderBase]: For 60614/60614 co-relation queries the response was YES. [2024-06-04 14:07:26,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5585 conditions, 890 events. 501/890 cut-off events. For 60614/60614 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4087 event pairs, 85 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 5490. Up to 720 conditions per place. [2024-06-04 14:07:26,523 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 142 selfloop transitions, 32 changer transitions 0/176 dead transitions. [2024-06-04 14:07:26,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 176 transitions, 1814 flow [2024-06-04 14:07:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 14:07:26,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-04 14:07:26,523 INFO L175 Difference]: Start difference. First operand has 188 places, 158 transitions, 1402 flow. Second operand 9 states and 102 transitions. [2024-06-04 14:07:26,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 176 transitions, 1814 flow [2024-06-04 14:07:26,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 176 transitions, 1710 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:26,655 INFO L231 Difference]: Finished difference. Result has 191 places, 159 transitions, 1390 flow [2024-06-04 14:07:26,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1390, PETRI_PLACES=191, PETRI_TRANSITIONS=159} [2024-06-04 14:07:26,656 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 159 predicate places. [2024-06-04 14:07:26,656 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 159 transitions, 1390 flow [2024-06-04 14:07:26,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:26,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:26,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:26,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:07:26,656 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)] === [2024-06-04 14:07:26,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:26,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1681085813, now seen corresponding path program 5 times [2024-06-04 14:07:26,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:26,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435049454] [2024-06-04 14:07:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:27,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:27,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435049454] [2024-06-04 14:07:27,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435049454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:27,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:27,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:27,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734281419] [2024-06-04 14:07:27,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:27,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:27,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:27,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:27,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:27,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:27,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 159 transitions, 1390 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:27,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:27,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:27,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:28,476 INFO L124 PetriNetUnfolderBase]: 497/884 cut-off events. [2024-06-04 14:07:28,476 INFO L125 PetriNetUnfolderBase]: For 57792/57792 co-relation queries the response was YES. [2024-06-04 14:07:28,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5408 conditions, 884 events. 497/884 cut-off events. For 57792/57792 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4083 event pairs, 81 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 5311. Up to 689 conditions per place. [2024-06-04 14:07:28,481 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 40 changer transitions 0/179 dead transitions. [2024-06-04 14:07:28,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 179 transitions, 1794 flow [2024-06-04 14:07:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:28,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:28,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:07:28,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-04 14:07:28,482 INFO L175 Difference]: Start difference. First operand has 191 places, 159 transitions, 1390 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:07:28,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 179 transitions, 1794 flow [2024-06-04 14:07:28,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 179 transitions, 1692 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:28,629 INFO L231 Difference]: Finished difference. Result has 194 places, 159 transitions, 1373 flow [2024-06-04 14:07:28,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1373, PETRI_PLACES=194, PETRI_TRANSITIONS=159} [2024-06-04 14:07:28,629 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-04 14:07:28,629 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 159 transitions, 1373 flow [2024-06-04 14:07:28,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:28,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:28,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:28,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:07:28,630 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)] === [2024-06-04 14:07:28,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash 194842677, now seen corresponding path program 1 times [2024-06-04 14:07:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:28,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560333689] [2024-06-04 14:07:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:29,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:29,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560333689] [2024-06-04 14:07:29,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560333689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:29,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:29,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:29,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986578510] [2024-06-04 14:07:29,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:29,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:29,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:29,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:29,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:29,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:29,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 159 transitions, 1373 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:29,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:29,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:29,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:30,045 INFO L124 PetriNetUnfolderBase]: 505/902 cut-off events. [2024-06-04 14:07:30,045 INFO L125 PetriNetUnfolderBase]: For 63850/63853 co-relation queries the response was YES. [2024-06-04 14:07:30,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5465 conditions, 902 events. 505/902 cut-off events. For 63850/63853 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4181 event pairs, 106 based on Foata normal form. 6/905 useless extension candidates. Maximal degree in co-relation 5367. Up to 807 conditions per place. [2024-06-04 14:07:30,052 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 158 selfloop transitions, 22 changer transitions 0/182 dead transitions. [2024-06-04 14:07:30,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 182 transitions, 1821 flow [2024-06-04 14:07:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:07:30,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:07:30,053 INFO L175 Difference]: Start difference. First operand has 194 places, 159 transitions, 1373 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:07:30,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 182 transitions, 1821 flow [2024-06-04 14:07:30,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 182 transitions, 1710 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:30,191 INFO L231 Difference]: Finished difference. Result has 196 places, 160 transitions, 1330 flow [2024-06-04 14:07:30,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1330, PETRI_PLACES=196, PETRI_TRANSITIONS=160} [2024-06-04 14:07:30,191 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places. [2024-06-04 14:07:30,191 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 160 transitions, 1330 flow [2024-06-04 14:07:30,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:30,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:30,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:30,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:07:30,192 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)] === [2024-06-04 14:07:30,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:30,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1078518573, now seen corresponding path program 8 times [2024-06-04 14:07:30,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:30,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113113928] [2024-06-04 14:07:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:30,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:31,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:31,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:31,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113113928] [2024-06-04 14:07:31,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113113928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:31,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:31,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:31,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253858533] [2024-06-04 14:07:31,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:31,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:31,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:31,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:31,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 160 transitions, 1330 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:31,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:31,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:31,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:32,149 INFO L124 PetriNetUnfolderBase]: 509/910 cut-off events. [2024-06-04 14:07:32,149 INFO L125 PetriNetUnfolderBase]: For 61267/61270 co-relation queries the response was YES. [2024-06-04 14:07:32,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5471 conditions, 910 events. 509/910 cut-off events. For 61267/61270 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4247 event pairs, 77 based on Foata normal form. 2/906 useless extension candidates. Maximal degree in co-relation 5372. Up to 706 conditions per place. [2024-06-04 14:07:32,154 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 138 selfloop transitions, 39 changer transitions 0/179 dead transitions. [2024-06-04 14:07:32,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 179 transitions, 1754 flow [2024-06-04 14:07:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 14:07:32,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-04 14:07:32,155 INFO L175 Difference]: Start difference. First operand has 196 places, 160 transitions, 1330 flow. Second operand 9 states and 106 transitions. [2024-06-04 14:07:32,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 179 transitions, 1754 flow [2024-06-04 14:07:32,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 179 transitions, 1696 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:32,282 INFO L231 Difference]: Finished difference. Result has 196 places, 161 transitions, 1380 flow [2024-06-04 14:07:32,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1380, PETRI_PLACES=196, PETRI_TRANSITIONS=161} [2024-06-04 14:07:32,282 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places. [2024-06-04 14:07:32,283 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 161 transitions, 1380 flow [2024-06-04 14:07:32,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:32,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:32,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:32,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:07:32,283 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)] === [2024-06-04 14:07:32,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:32,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1078733775, now seen corresponding path program 6 times [2024-06-04 14:07:32,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:32,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412451681] [2024-06-04 14:07:32,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:32,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:33,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:33,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412451681] [2024-06-04 14:07:33,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412451681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:33,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:33,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:33,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350152544] [2024-06-04 14:07:33,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:33,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:33,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:33,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:33,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:33,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:33,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 161 transitions, 1380 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:33,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:33,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:33,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:34,118 INFO L124 PetriNetUnfolderBase]: 525/936 cut-off events. [2024-06-04 14:07:34,118 INFO L125 PetriNetUnfolderBase]: For 68479/68482 co-relation queries the response was YES. [2024-06-04 14:07:34,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5882 conditions, 936 events. 525/936 cut-off events. For 68479/68482 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4371 event pairs, 81 based on Foata normal form. 2/932 useless extension candidates. Maximal degree in co-relation 5782. Up to 595 conditions per place. [2024-06-04 14:07:34,125 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 124 selfloop transitions, 62 changer transitions 0/188 dead transitions. [2024-06-04 14:07:34,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 188 transitions, 2050 flow [2024-06-04 14:07:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:34,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:07:34,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-04 14:07:34,127 INFO L175 Difference]: Start difference. First operand has 196 places, 161 transitions, 1380 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:07:34,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 188 transitions, 2050 flow [2024-06-04 14:07:34,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 188 transitions, 1952 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:34,282 INFO L231 Difference]: Finished difference. Result has 199 places, 165 transitions, 1515 flow [2024-06-04 14:07:34,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1515, PETRI_PLACES=199, PETRI_TRANSITIONS=165} [2024-06-04 14:07:34,283 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-04 14:07:34,283 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 165 transitions, 1515 flow [2024-06-04 14:07:34,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:34,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:34,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:34,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:07:34,283 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)] === [2024-06-04 14:07:34,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:34,284 INFO L85 PathProgramCache]: Analyzing trace with hash 931142359, now seen corresponding path program 7 times [2024-06-04 14:07:34,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:34,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786775382] [2024-06-04 14:07:34,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:35,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786775382] [2024-06-04 14:07:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786775382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:35,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:35,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:35,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469848097] [2024-06-04 14:07:35,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:35,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:35,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:35,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:35,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:35,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:35,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 165 transitions, 1515 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:35,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:35,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:35,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:36,186 INFO L124 PetriNetUnfolderBase]: 541/962 cut-off events. [2024-06-04 14:07:36,186 INFO L125 PetriNetUnfolderBase]: For 76106/76109 co-relation queries the response was YES. [2024-06-04 14:07:36,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 962 events. 541/962 cut-off events. For 76106/76109 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4533 event pairs, 71 based on Foata normal form. 2/958 useless extension candidates. Maximal degree in co-relation 6242. Up to 625 conditions per place. [2024-06-04 14:07:36,193 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 125 selfloop transitions, 65 changer transitions 0/192 dead transitions. [2024-06-04 14:07:36,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 192 transitions, 2203 flow [2024-06-04 14:07:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 14:07:36,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-04 14:07:36,194 INFO L175 Difference]: Start difference. First operand has 199 places, 165 transitions, 1515 flow. Second operand 10 states and 122 transitions. [2024-06-04 14:07:36,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 192 transitions, 2203 flow [2024-06-04 14:07:36,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 192 transitions, 2074 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:36,352 INFO L231 Difference]: Finished difference. Result has 203 places, 169 transitions, 1633 flow [2024-06-04 14:07:36,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1633, PETRI_PLACES=203, PETRI_TRANSITIONS=169} [2024-06-04 14:07:36,353 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-04 14:07:36,353 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 169 transitions, 1633 flow [2024-06-04 14:07:36,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:36,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:36,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:36,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:07:36,353 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)] === [2024-06-04 14:07:36,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash 931134919, now seen corresponding path program 8 times [2024-06-04 14:07:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:36,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957700451] [2024-06-04 14:07:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:36,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:37,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957700451] [2024-06-04 14:07:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957700451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:37,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:37,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:37,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848436803] [2024-06-04 14:07:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:37,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:37,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:37,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:37,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:37,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 169 transitions, 1633 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:37,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:37,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:37,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:38,112 INFO L124 PetriNetUnfolderBase]: 547/972 cut-off events. [2024-06-04 14:07:38,112 INFO L125 PetriNetUnfolderBase]: For 78232/78235 co-relation queries the response was YES. [2024-06-04 14:07:38,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6554 conditions, 972 events. 547/972 cut-off events. For 78232/78235 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4583 event pairs, 71 based on Foata normal form. 2/968 useless extension candidates. Maximal degree in co-relation 6451. Up to 656 conditions per place. [2024-06-04 14:07:38,120 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 128 selfloop transitions, 62 changer transitions 0/192 dead transitions. [2024-06-04 14:07:38,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 192 transitions, 2125 flow [2024-06-04 14:07:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:38,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:38,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 14:07:38,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-04 14:07:38,122 INFO L175 Difference]: Start difference. First operand has 203 places, 169 transitions, 1633 flow. Second operand 10 states and 119 transitions. [2024-06-04 14:07:38,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 192 transitions, 2125 flow [2024-06-04 14:07:38,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 192 transitions, 1968 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:38,284 INFO L231 Difference]: Finished difference. Result has 207 places, 171 transitions, 1667 flow [2024-06-04 14:07:38,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1667, PETRI_PLACES=207, PETRI_TRANSITIONS=171} [2024-06-04 14:07:38,284 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2024-06-04 14:07:38,284 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 171 transitions, 1667 flow [2024-06-04 14:07:38,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:38,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:38,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:38,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:07:38,285 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)] === [2024-06-04 14:07:38,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash -946658729, now seen corresponding path program 9 times [2024-06-04 14:07:38,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:38,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895164309] [2024-06-04 14:07:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:38,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:39,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895164309] [2024-06-04 14:07:39,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895164309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:39,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:39,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:39,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036709575] [2024-06-04 14:07:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:39,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:39,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:39,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:39,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:39,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 171 transitions, 1667 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:39,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:39,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:39,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:40,138 INFO L124 PetriNetUnfolderBase]: 553/982 cut-off events. [2024-06-04 14:07:40,138 INFO L125 PetriNetUnfolderBase]: For 79712/79715 co-relation queries the response was YES. [2024-06-04 14:07:40,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6672 conditions, 982 events. 553/982 cut-off events. For 79712/79715 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4656 event pairs, 80 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 6567. Up to 666 conditions per place. [2024-06-04 14:07:40,146 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 133 selfloop transitions, 59 changer transitions 0/194 dead transitions. [2024-06-04 14:07:40,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 194 transitions, 2149 flow [2024-06-04 14:07:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:07:40,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:07:40,147 INFO L175 Difference]: Start difference. First operand has 207 places, 171 transitions, 1667 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:07:40,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 194 transitions, 2149 flow [2024-06-04 14:07:40,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 194 transitions, 1992 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:40,323 INFO L231 Difference]: Finished difference. Result has 209 places, 173 transitions, 1681 flow [2024-06-04 14:07:40,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1681, PETRI_PLACES=209, PETRI_TRANSITIONS=173} [2024-06-04 14:07:40,324 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 177 predicate places. [2024-06-04 14:07:40,324 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 173 transitions, 1681 flow [2024-06-04 14:07:40,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:40,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:40,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:40,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:07:40,324 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)] === [2024-06-04 14:07:40,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:40,324 INFO L85 PathProgramCache]: Analyzing trace with hash -946860539, now seen corresponding path program 10 times [2024-06-04 14:07:40,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:40,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608139639] [2024-06-04 14:07:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:41,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:41,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608139639] [2024-06-04 14:07:41,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608139639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:41,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:41,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:41,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377363543] [2024-06-04 14:07:41,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:41,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:41,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:41,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:41,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:41,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:41,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 173 transitions, 1681 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:41,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:41,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:41,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:42,230 INFO L124 PetriNetUnfolderBase]: 559/992 cut-off events. [2024-06-04 14:07:42,230 INFO L125 PetriNetUnfolderBase]: For 82144/82147 co-relation queries the response was YES. [2024-06-04 14:07:42,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 992 events. 559/992 cut-off events. For 82144/82147 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4714 event pairs, 81 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 6636. Up to 676 conditions per place. [2024-06-04 14:07:42,238 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 135 selfloop transitions, 58 changer transitions 0/195 dead transitions. [2024-06-04 14:07:42,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 195 transitions, 2165 flow [2024-06-04 14:07:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:07:42,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:07:42,239 INFO L175 Difference]: Start difference. First operand has 209 places, 173 transitions, 1681 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:07:42,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 195 transitions, 2165 flow [2024-06-04 14:07:42,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 195 transitions, 2014 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:42,413 INFO L231 Difference]: Finished difference. Result has 211 places, 175 transitions, 1703 flow [2024-06-04 14:07:42,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1703, PETRI_PLACES=211, PETRI_TRANSITIONS=175} [2024-06-04 14:07:42,414 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-04 14:07:42,414 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 175 transitions, 1703 flow [2024-06-04 14:07:42,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:42,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:42,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:42,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:07:42,414 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)] === [2024-06-04 14:07:42,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1823101863, now seen corresponding path program 9 times [2024-06-04 14:07:42,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:42,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820000422] [2024-06-04 14:07:42,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:42,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:43,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:43,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820000422] [2024-06-04 14:07:43,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820000422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:43,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:43,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:43,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256004356] [2024-06-04 14:07:43,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:43,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:43,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:43,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:43,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:43,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:43,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 175 transitions, 1703 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:43,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:43,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:43,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:44,230 INFO L124 PetriNetUnfolderBase]: 563/1000 cut-off events. [2024-06-04 14:07:44,230 INFO L125 PetriNetUnfolderBase]: For 84518/84521 co-relation queries the response was YES. [2024-06-04 14:07:44,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6794 conditions, 1000 events. 563/1000 cut-off events. For 84518/84521 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4759 event pairs, 77 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6687. Up to 796 conditions per place. [2024-06-04 14:07:44,238 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 148 selfloop transitions, 43 changer transitions 0/193 dead transitions. [2024-06-04 14:07:44,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 193 transitions, 2155 flow [2024-06-04 14:07:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:07:44,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-04 14:07:44,238 INFO L175 Difference]: Start difference. First operand has 211 places, 175 transitions, 1703 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:07:44,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 193 transitions, 2155 flow [2024-06-04 14:07:44,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 193 transitions, 2002 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:44,416 INFO L231 Difference]: Finished difference. Result has 212 places, 176 transitions, 1668 flow [2024-06-04 14:07:44,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1668, PETRI_PLACES=212, PETRI_TRANSITIONS=176} [2024-06-04 14:07:44,417 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 180 predicate places. [2024-06-04 14:07:44,417 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 176 transitions, 1668 flow [2024-06-04 14:07:44,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:44,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:44,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:44,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:07:44,417 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)] === [2024-06-04 14:07:44,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:44,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1073012043, now seen corresponding path program 10 times [2024-06-04 14:07:44,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:44,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751111999] [2024-06-04 14:07:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:44,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:45,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:45,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751111999] [2024-06-04 14:07:45,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751111999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:45,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:45,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:45,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82312447] [2024-06-04 14:07:45,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:45,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:45,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:45,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:45,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:45,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 176 transitions, 1668 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:45,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:45,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:45,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:46,159 INFO L124 PetriNetUnfolderBase]: 567/1008 cut-off events. [2024-06-04 14:07:46,159 INFO L125 PetriNetUnfolderBase]: For 86686/86689 co-relation queries the response was YES. [2024-06-04 14:07:46,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6809 conditions, 1008 events. 567/1008 cut-off events. For 86686/86689 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4809 event pairs, 85 based on Foata normal form. 2/1004 useless extension candidates. Maximal degree in co-relation 6701. Up to 804 conditions per place. [2024-06-04 14:07:46,167 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 151 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-06-04 14:07:46,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 193 transitions, 2118 flow [2024-06-04 14:07:46,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:07:46,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-04 14:07:46,168 INFO L175 Difference]: Start difference. First operand has 212 places, 176 transitions, 1668 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:07:46,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 193 transitions, 2118 flow [2024-06-04 14:07:46,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 193 transitions, 2010 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:46,346 INFO L231 Difference]: Finished difference. Result has 214 places, 177 transitions, 1674 flow [2024-06-04 14:07:46,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1674, PETRI_PLACES=214, PETRI_TRANSITIONS=177} [2024-06-04 14:07:46,347 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 182 predicate places. [2024-06-04 14:07:46,347 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 177 transitions, 1674 flow [2024-06-04 14:07:46,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:46,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:46,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:46,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:07:46,347 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)] === [2024-06-04 14:07:46,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:46,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1073008323, now seen corresponding path program 11 times [2024-06-04 14:07:46,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:46,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736165754] [2024-06-04 14:07:46,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:46,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:47,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:47,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736165754] [2024-06-04 14:07:47,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736165754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:47,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:47,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:47,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981208655] [2024-06-04 14:07:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:47,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:47,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:47,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:47,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 177 transitions, 1674 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:47,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:47,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:47,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:47,873 INFO L124 PetriNetUnfolderBase]: 564/1003 cut-off events. [2024-06-04 14:07:47,874 INFO L125 PetriNetUnfolderBase]: For 82950/82953 co-relation queries the response was YES. [2024-06-04 14:07:47,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6598 conditions, 1003 events. 564/1003 cut-off events. For 82950/82953 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4789 event pairs, 84 based on Foata normal form. 2/999 useless extension candidates. Maximal degree in co-relation 6489. Up to 773 conditions per place. [2024-06-04 14:07:47,882 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 148 selfloop transitions, 43 changer transitions 0/193 dead transitions. [2024-06-04 14:07:47,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 193 transitions, 2096 flow [2024-06-04 14:07:47,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:07:47,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:07:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:07:47,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-04 14:07:47,883 INFO L175 Difference]: Start difference. First operand has 214 places, 177 transitions, 1674 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:07:47,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 193 transitions, 2096 flow [2024-06-04 14:07:48,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 193 transitions, 1992 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:07:48,062 INFO L231 Difference]: Finished difference. Result has 216 places, 177 transitions, 1660 flow [2024-06-04 14:07:48,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1660, PETRI_PLACES=216, PETRI_TRANSITIONS=177} [2024-06-04 14:07:48,062 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 184 predicate places. [2024-06-04 14:07:48,062 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 177 transitions, 1660 flow [2024-06-04 14:07:48,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:48,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:48,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:48,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:07:48,063 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)] === [2024-06-04 14:07:48,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:48,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1073162145, now seen corresponding path program 11 times [2024-06-04 14:07:48,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:48,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804919809] [2024-06-04 14:07:48,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:48,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:49,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:49,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804919809] [2024-06-04 14:07:49,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804919809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:49,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:49,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:49,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268587293] [2024-06-04 14:07:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:49,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:49,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:49,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:49,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 177 transitions, 1660 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:49,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:49,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:49,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:49,919 INFO L124 PetriNetUnfolderBase]: 560/997 cut-off events. [2024-06-04 14:07:49,920 INFO L125 PetriNetUnfolderBase]: For 78657/78660 co-relation queries the response was YES. [2024-06-04 14:07:49,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6389 conditions, 997 events. 560/997 cut-off events. For 78657/78660 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4763 event pairs, 87 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 6279. Up to 681 conditions per place. [2024-06-04 14:07:49,927 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 61 changer transitions 0/195 dead transitions. [2024-06-04 14:07:49,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 195 transitions, 2090 flow [2024-06-04 14:07:49,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:49,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:07:49,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:07:49,928 INFO L175 Difference]: Start difference. First operand has 216 places, 177 transitions, 1660 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:07:49,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 195 transitions, 2090 flow [2024-06-04 14:07:50,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 195 transitions, 1910 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-04 14:07:50,138 INFO L231 Difference]: Finished difference. Result has 218 places, 177 transitions, 1607 flow [2024-06-04 14:07:50,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1607, PETRI_PLACES=218, PETRI_TRANSITIONS=177} [2024-06-04 14:07:50,138 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2024-06-04 14:07:50,138 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 177 transitions, 1607 flow [2024-06-04 14:07:50,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:50,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:50,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:50,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:07:50,139 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)] === [2024-06-04 14:07:50,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:50,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1280092415, now seen corresponding path program 2 times [2024-06-04 14:07:50,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:50,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577720948] [2024-06-04 14:07:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:50,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:51,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:51,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577720948] [2024-06-04 14:07:51,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577720948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:51,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:51,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:51,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059114837] [2024-06-04 14:07:51,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:51,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:51,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:51,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:51,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:51,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:51,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 177 transitions, 1607 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:51,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:51,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:51,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:51,630 INFO L124 PetriNetUnfolderBase]: 568/1014 cut-off events. [2024-06-04 14:07:51,630 INFO L125 PetriNetUnfolderBase]: For 86471/86474 co-relation queries the response was YES. [2024-06-04 14:07:51,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6389 conditions, 1014 events. 568/1014 cut-off events. For 86471/86474 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4896 event pairs, 112 based on Foata normal form. 6/1015 useless extension candidates. Maximal degree in co-relation 6278. Up to 856 conditions per place. [2024-06-04 14:07:51,636 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 159 selfloop transitions, 37 changer transitions 0/198 dead transitions. [2024-06-04 14:07:51,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 198 transitions, 2081 flow [2024-06-04 14:07:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:07:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:07:51,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:07:51,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-04 14:07:51,637 INFO L175 Difference]: Start difference. First operand has 218 places, 177 transitions, 1607 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:07:51,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 198 transitions, 2081 flow [2024-06-04 14:07:51,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 198 transitions, 1895 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 14:07:51,837 INFO L231 Difference]: Finished difference. Result has 218 places, 178 transitions, 1521 flow [2024-06-04 14:07:51,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1521, PETRI_PLACES=218, PETRI_TRANSITIONS=178} [2024-06-04 14:07:51,838 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2024-06-04 14:07:51,838 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 178 transitions, 1521 flow [2024-06-04 14:07:51,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:51,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:51,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:51,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:07:51,839 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)] === [2024-06-04 14:07:51,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:51,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1083128655, now seen corresponding path program 12 times [2024-06-04 14:07:51,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:51,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191747924] [2024-06-04 14:07:51,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:51,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:53,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:53,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191747924] [2024-06-04 14:07:53,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191747924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:53,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:53,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:53,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738497384] [2024-06-04 14:07:53,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:53,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:53,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:53,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:53,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 178 transitions, 1521 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:53,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:53,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:53,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:53,712 INFO L124 PetriNetUnfolderBase]: 584/1039 cut-off events. [2024-06-04 14:07:53,712 INFO L125 PetriNetUnfolderBase]: For 89128/89131 co-relation queries the response was YES. [2024-06-04 14:07:53,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6598 conditions, 1039 events. 584/1039 cut-off events. For 89128/89131 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5019 event pairs, 68 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 6488. Up to 706 conditions per place. [2024-06-04 14:07:53,721 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 130 selfloop transitions, 73 changer transitions 0/205 dead transitions. [2024-06-04 14:07:53,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 205 transitions, 2257 flow [2024-06-04 14:07:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 14:07:53,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-04 14:07:53,722 INFO L175 Difference]: Start difference. First operand has 218 places, 178 transitions, 1521 flow. Second operand 10 states and 121 transitions. [2024-06-04 14:07:53,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 205 transitions, 2257 flow [2024-06-04 14:07:53,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 205 transitions, 2169 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:53,941 INFO L231 Difference]: Finished difference. Result has 219 places, 182 transitions, 1700 flow [2024-06-04 14:07:53,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1700, PETRI_PLACES=219, PETRI_TRANSITIONS=182} [2024-06-04 14:07:53,941 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2024-06-04 14:07:53,941 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 182 transitions, 1700 flow [2024-06-04 14:07:53,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:53,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:53,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:53,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:07:53,942 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)] === [2024-06-04 14:07:53,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:53,942 INFO L85 PathProgramCache]: Analyzing trace with hash -769169955, now seen corresponding path program 13 times [2024-06-04 14:07:53,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:53,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683872753] [2024-06-04 14:07:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:53,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:55,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:55,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683872753] [2024-06-04 14:07:55,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683872753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:55,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:55,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:07:55,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181814539] [2024-06-04 14:07:55,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:55,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:07:55,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:55,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:07:55,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:07:55,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:55,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 182 transitions, 1700 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:55,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:55,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:55,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:55,447 INFO L124 PetriNetUnfolderBase]: 596/1057 cut-off events. [2024-06-04 14:07:55,447 INFO L125 PetriNetUnfolderBase]: For 98303/98303 co-relation queries the response was YES. [2024-06-04 14:07:55,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6839 conditions, 1057 events. 596/1057 cut-off events. For 98303/98303 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5133 event pairs, 147 based on Foata normal form. 4/1060 useless extension candidates. Maximal degree in co-relation 6728. Up to 985 conditions per place. [2024-06-04 14:07:55,455 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 178 selfloop transitions, 22 changer transitions 0/202 dead transitions. [2024-06-04 14:07:55,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 202 transitions, 2400 flow [2024-06-04 14:07:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:07:55,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-04 14:07:55,456 INFO L175 Difference]: Start difference. First operand has 219 places, 182 transitions, 1700 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:07:55,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 202 transitions, 2400 flow [2024-06-04 14:07:55,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 202 transitions, 2237 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:55,674 INFO L231 Difference]: Finished difference. Result has 223 places, 187 transitions, 1695 flow [2024-06-04 14:07:55,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1695, PETRI_PLACES=223, PETRI_TRANSITIONS=187} [2024-06-04 14:07:55,674 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 191 predicate places. [2024-06-04 14:07:55,674 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 187 transitions, 1695 flow [2024-06-04 14:07:55,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:07:55,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:55,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:55,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:07:55,675 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)] === [2024-06-04 14:07:55,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1083136095, now seen corresponding path program 14 times [2024-06-04 14:07:55,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:55,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899308517] [2024-06-04 14:07:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:55,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:57,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:57,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899308517] [2024-06-04 14:07:57,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899308517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:57,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:57,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:57,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408679402] [2024-06-04 14:07:57,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:57,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:57,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:57,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:57,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:57,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:57,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 187 transitions, 1695 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:57,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:57,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:57,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:57,520 INFO L124 PetriNetUnfolderBase]: 592/1053 cut-off events. [2024-06-04 14:07:57,520 INFO L125 PetriNetUnfolderBase]: For 86889/86892 co-relation queries the response was YES. [2024-06-04 14:07:57,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6564 conditions, 1053 events. 592/1053 cut-off events. For 86889/86892 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5111 event pairs, 68 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 6451. Up to 737 conditions per place. [2024-06-04 14:07:57,531 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 135 selfloop transitions, 70 changer transitions 0/207 dead transitions. [2024-06-04 14:07:57,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 207 transitions, 2157 flow [2024-06-04 14:07:57,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:57,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:07:57,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:07:57,532 INFO L175 Difference]: Start difference. First operand has 223 places, 187 transitions, 1695 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:07:57,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 207 transitions, 2157 flow [2024-06-04 14:07:57,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 207 transitions, 2034 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-04 14:07:57,758 INFO L231 Difference]: Finished difference. Result has 227 places, 187 transitions, 1717 flow [2024-06-04 14:07:57,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1717, PETRI_PLACES=227, PETRI_TRANSITIONS=187} [2024-06-04 14:07:57,759 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 195 predicate places. [2024-06-04 14:07:57,759 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 187 transitions, 1717 flow [2024-06-04 14:07:57,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:57,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:57,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:57,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:07:57,759 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)] === [2024-06-04 14:07:57,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash 695290529, now seen corresponding path program 15 times [2024-06-04 14:07:57,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:57,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184699127] [2024-06-04 14:07:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:57,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:07:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:07:59,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:07:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184699127] [2024-06-04 14:07:59,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184699127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:07:59,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:07:59,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:07:59,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529120414] [2024-06-04 14:07:59,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:07:59,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:07:59,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:07:59,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:07:59,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:07:59,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:07:59,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 187 transitions, 1717 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:59,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:07:59,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:07:59,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:07:59,666 INFO L124 PetriNetUnfolderBase]: 588/1047 cut-off events. [2024-06-04 14:07:59,667 INFO L125 PetriNetUnfolderBase]: For 81316/81319 co-relation queries the response was YES. [2024-06-04 14:07:59,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6397 conditions, 1047 events. 588/1047 cut-off events. For 81316/81319 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5073 event pairs, 74 based on Foata normal form. 2/1043 useless extension candidates. Maximal degree in co-relation 6282. Up to 731 conditions per place. [2024-06-04 14:07:59,676 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 141 selfloop transitions, 63 changer transitions 0/206 dead transitions. [2024-06-04 14:07:59,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 206 transitions, 2173 flow [2024-06-04 14:07:59,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:07:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:07:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:07:59,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:07:59,677 INFO L175 Difference]: Start difference. First operand has 227 places, 187 transitions, 1717 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:07:59,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 206 transitions, 2173 flow [2024-06-04 14:07:59,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 206 transitions, 1994 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:07:59,900 INFO L231 Difference]: Finished difference. Result has 228 places, 187 transitions, 1669 flow [2024-06-04 14:07:59,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1669, PETRI_PLACES=228, PETRI_TRANSITIONS=187} [2024-06-04 14:07:59,901 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 196 predicate places. [2024-06-04 14:07:59,901 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 187 transitions, 1669 flow [2024-06-04 14:07:59,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:07:59,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:07:59,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:07:59,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:07:59,902 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)] === [2024-06-04 14:07:59,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:07:59,902 INFO L85 PathProgramCache]: Analyzing trace with hash 938561589, now seen corresponding path program 3 times [2024-06-04 14:07:59,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:07:59,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682020439] [2024-06-04 14:07:59,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:07:59,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:07:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:00,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:00,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682020439] [2024-06-04 14:08:00,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682020439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:00,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:00,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:00,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368529625] [2024-06-04 14:08:00,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:00,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:00,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:00,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:01,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:01,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 187 transitions, 1669 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:01,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:01,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:01,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:01,451 INFO L124 PetriNetUnfolderBase]: 596/1064 cut-off events. [2024-06-04 14:08:01,451 INFO L125 PetriNetUnfolderBase]: For 90169/90172 co-relation queries the response was YES. [2024-06-04 14:08:01,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6411 conditions, 1064 events. 596/1064 cut-off events. For 90169/90172 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5211 event pairs, 107 based on Foata normal form. 6/1065 useless extension candidates. Maximal degree in co-relation 6295. Up to 906 conditions per place. [2024-06-04 14:08:01,460 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 167 selfloop transitions, 39 changer transitions 0/208 dead transitions. [2024-06-04 14:08:01,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 208 transitions, 2163 flow [2024-06-04 14:08:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:08:01,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:08:01,462 INFO L175 Difference]: Start difference. First operand has 228 places, 187 transitions, 1669 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:08:01,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 208 transitions, 2163 flow [2024-06-04 14:08:01,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 208 transitions, 2025 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:01,684 INFO L231 Difference]: Finished difference. Result has 230 places, 188 transitions, 1635 flow [2024-06-04 14:08:01,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1635, PETRI_PLACES=230, PETRI_TRANSITIONS=188} [2024-06-04 14:08:01,685 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 198 predicate places. [2024-06-04 14:08:01,685 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 188 transitions, 1635 flow [2024-06-04 14:08:01,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:01,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:01,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:01,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:08:01,685 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)] === [2024-06-04 14:08:01,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1187912259, now seen corresponding path program 4 times [2024-06-04 14:08:01,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:01,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200017184] [2024-06-04 14:08:01,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:01,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:02,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200017184] [2024-06-04 14:08:02,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200017184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:02,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:02,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:02,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553005570] [2024-06-04 14:08:02,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:02,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:02,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:02,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:02,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:02,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 188 transitions, 1635 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:02,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:02,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:02,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:03,154 INFO L124 PetriNetUnfolderBase]: 604/1080 cut-off events. [2024-06-04 14:08:03,154 INFO L125 PetriNetUnfolderBase]: For 92436/92439 co-relation queries the response was YES. [2024-06-04 14:08:03,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6425 conditions, 1080 events. 604/1080 cut-off events. For 92436/92439 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5335 event pairs, 107 based on Foata normal form. 6/1081 useless extension candidates. Maximal degree in co-relation 6308. Up to 922 conditions per place. [2024-06-04 14:08:03,163 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 165 selfloop transitions, 42 changer transitions 0/209 dead transitions. [2024-06-04 14:08:03,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 209 transitions, 2133 flow [2024-06-04 14:08:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:03,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:03,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:08:03,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:08:03,164 INFO L175 Difference]: Start difference. First operand has 230 places, 188 transitions, 1635 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:08:03,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 209 transitions, 2133 flow [2024-06-04 14:08:03,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 209 transitions, 2039 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:03,358 INFO L231 Difference]: Finished difference. Result has 232 places, 189 transitions, 1653 flow [2024-06-04 14:08:03,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1653, PETRI_PLACES=232, PETRI_TRANSITIONS=189} [2024-06-04 14:08:03,358 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 200 predicate places. [2024-06-04 14:08:03,358 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 189 transitions, 1653 flow [2024-06-04 14:08:03,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:03,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:03,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:03,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:08:03,359 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)] === [2024-06-04 14:08:03,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:03,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1500422197, now seen corresponding path program 5 times [2024-06-04 14:08:03,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:03,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167313824] [2024-06-04 14:08:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:03,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:04,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:04,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167313824] [2024-06-04 14:08:04,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167313824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:04,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:04,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:04,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397213189] [2024-06-04 14:08:04,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:04,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:04,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:04,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:04,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 189 transitions, 1653 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:04,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:04,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:04,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:04,889 INFO L124 PetriNetUnfolderBase]: 612/1093 cut-off events. [2024-06-04 14:08:04,889 INFO L125 PetriNetUnfolderBase]: For 94571/94571 co-relation queries the response was YES. [2024-06-04 14:08:04,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6513 conditions, 1093 events. 612/1093 cut-off events. For 94571/94571 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5411 event pairs, 155 based on Foata normal form. 4/1096 useless extension candidates. Maximal degree in co-relation 6395. Up to 1026 conditions per place. [2024-06-04 14:08:04,898 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 184 selfloop transitions, 19 changer transitions 0/205 dead transitions. [2024-06-04 14:08:04,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 205 transitions, 2123 flow [2024-06-04 14:08:04,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:04,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:04,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-04 14:08:04,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-04 14:08:04,899 INFO L175 Difference]: Start difference. First operand has 232 places, 189 transitions, 1653 flow. Second operand 11 states and 110 transitions. [2024-06-04 14:08:04,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 205 transitions, 2123 flow [2024-06-04 14:08:05,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 205 transitions, 2021 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:05,135 INFO L231 Difference]: Finished difference. Result has 234 places, 190 transitions, 1620 flow [2024-06-04 14:08:05,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1620, PETRI_PLACES=234, PETRI_TRANSITIONS=190} [2024-06-04 14:08:05,136 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2024-06-04 14:08:05,136 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 190 transitions, 1620 flow [2024-06-04 14:08:05,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:05,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:05,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:05,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:08:05,136 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)] === [2024-06-04 14:08:05,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:05,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1195988557, now seen corresponding path program 6 times [2024-06-04 14:08:05,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:05,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219537795] [2024-06-04 14:08:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:05,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:05,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:05,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219537795] [2024-06-04 14:08:05,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219537795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:05,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:05,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:05,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81314705] [2024-06-04 14:08:05,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:05,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:05,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:05,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:05,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:06,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:06,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 190 transitions, 1620 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:08:06,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:06,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:06,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:06,340 INFO L124 PetriNetUnfolderBase]: 613/1096 cut-off events. [2024-06-04 14:08:06,341 INFO L125 PetriNetUnfolderBase]: For 89521/89521 co-relation queries the response was YES. [2024-06-04 14:08:06,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6329 conditions, 1096 events. 613/1096 cut-off events. For 89521/89521 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5439 event pairs, 154 based on Foata normal form. 4/1099 useless extension candidates. Maximal degree in co-relation 6210. Up to 1007 conditions per place. [2024-06-04 14:08:06,349 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 186 selfloop transitions, 18 changer transitions 0/206 dead transitions. [2024-06-04 14:08:06,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 206 transitions, 2094 flow [2024-06-04 14:08:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-04 14:08:06,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090909090909091 [2024-06-04 14:08:06,350 INFO L175 Difference]: Start difference. First operand has 234 places, 190 transitions, 1620 flow. Second operand 10 states and 102 transitions. [2024-06-04 14:08:06,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 206 transitions, 2094 flow [2024-06-04 14:08:06,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 206 transitions, 2037 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:06,554 INFO L231 Difference]: Finished difference. Result has 235 places, 191 transitions, 1631 flow [2024-06-04 14:08:06,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1631, PETRI_PLACES=235, PETRI_TRANSITIONS=191} [2024-06-04 14:08:06,554 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2024-06-04 14:08:06,554 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 191 transitions, 1631 flow [2024-06-04 14:08:06,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-04 14:08:06,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:06,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:06,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:08:06,555 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)] === [2024-06-04 14:08:06,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:06,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1329263911, now seen corresponding path program 1 times [2024-06-04 14:08:06,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:06,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621668114] [2024-06-04 14:08:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:06,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:07,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:07,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621668114] [2024-06-04 14:08:07,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621668114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:07,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:07,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:07,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338241962] [2024-06-04 14:08:07,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:07,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:07,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:07,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:07,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 191 transitions, 1631 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:07,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:07,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:07,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:08,129 INFO L124 PetriNetUnfolderBase]: 617/1105 cut-off events. [2024-06-04 14:08:08,129 INFO L125 PetriNetUnfolderBase]: For 83899/83899 co-relation queries the response was YES. [2024-06-04 14:08:08,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6361 conditions, 1105 events. 617/1105 cut-off events. For 83899/83899 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5526 event pairs, 109 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 6241. Up to 957 conditions per place. [2024-06-04 14:08:08,139 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 187 selfloop transitions, 23 changer transitions 0/212 dead transitions. [2024-06-04 14:08:08,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 212 transitions, 2115 flow [2024-06-04 14:08:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-04 14:08:08,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-06-04 14:08:08,140 INFO L175 Difference]: Start difference. First operand has 235 places, 191 transitions, 1631 flow. Second operand 10 states and 104 transitions. [2024-06-04 14:08:08,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 212 transitions, 2115 flow [2024-06-04 14:08:08,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 212 transitions, 2057 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:08,363 INFO L231 Difference]: Finished difference. Result has 237 places, 192 transitions, 1638 flow [2024-06-04 14:08:08,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1638, PETRI_PLACES=237, PETRI_TRANSITIONS=192} [2024-06-04 14:08:08,363 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 205 predicate places. [2024-06-04 14:08:08,363 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 192 transitions, 1638 flow [2024-06-04 14:08:08,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:08,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:08,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:08,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:08:08,364 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)] === [2024-06-04 14:08:08,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1426615977, now seen corresponding path program 2 times [2024-06-04 14:08:08,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:08,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101283116] [2024-06-04 14:08:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:08,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:09,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:09,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101283116] [2024-06-04 14:08:09,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101283116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:09,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:09,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:09,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683505505] [2024-06-04 14:08:09,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:09,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:09,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:09,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:09,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:09,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:09,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 192 transitions, 1638 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:09,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:09,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:09,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:10,236 INFO L124 PetriNetUnfolderBase]: 621/1113 cut-off events. [2024-06-04 14:08:10,236 INFO L125 PetriNetUnfolderBase]: For 85487/85487 co-relation queries the response was YES. [2024-06-04 14:08:10,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6415 conditions, 1113 events. 621/1113 cut-off events. For 85487/85487 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5587 event pairs, 133 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 6294. Up to 1002 conditions per place. [2024-06-04 14:08:10,246 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 188 selfloop transitions, 23 changer transitions 0/213 dead transitions. [2024-06-04 14:08:10,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 213 transitions, 2126 flow [2024-06-04 14:08:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:08:10,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-04 14:08:10,247 INFO L175 Difference]: Start difference. First operand has 237 places, 192 transitions, 1638 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:08:10,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 213 transitions, 2126 flow [2024-06-04 14:08:10,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 213 transitions, 2073 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:10,457 INFO L231 Difference]: Finished difference. Result has 239 places, 193 transitions, 1651 flow [2024-06-04 14:08:10,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1651, PETRI_PLACES=239, PETRI_TRANSITIONS=193} [2024-06-04 14:08:10,458 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 207 predicate places. [2024-06-04 14:08:10,458 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 193 transitions, 1651 flow [2024-06-04 14:08:10,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:10,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:10,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:10,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:08:10,458 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)] === [2024-06-04 14:08:10,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:10,458 INFO L85 PathProgramCache]: Analyzing trace with hash 18574859, now seen corresponding path program 3 times [2024-06-04 14:08:10,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:10,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136131412] [2024-06-04 14:08:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:10,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:11,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:11,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136131412] [2024-06-04 14:08:11,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136131412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:11,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:11,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:11,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54699187] [2024-06-04 14:08:11,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:11,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:11,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:11,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:11,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:11,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:11,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 193 transitions, 1651 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:11,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:11,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:11,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:12,198 INFO L124 PetriNetUnfolderBase]: 625/1121 cut-off events. [2024-06-04 14:08:12,198 INFO L125 PetriNetUnfolderBase]: For 87905/87905 co-relation queries the response was YES. [2024-06-04 14:08:12,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6472 conditions, 1121 events. 625/1121 cut-off events. For 87905/87905 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5629 event pairs, 133 based on Foata normal form. 2/1122 useless extension candidates. Maximal degree in co-relation 6350. Up to 996 conditions per place. [2024-06-04 14:08:12,206 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 188 selfloop transitions, 24 changer transitions 0/214 dead transitions. [2024-06-04 14:08:12,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 214 transitions, 2143 flow [2024-06-04 14:08:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:08:12,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:08:12,207 INFO L175 Difference]: Start difference. First operand has 239 places, 193 transitions, 1651 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:08:12,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 214 transitions, 2143 flow [2024-06-04 14:08:12,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 214 transitions, 2087 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:12,423 INFO L231 Difference]: Finished difference. Result has 241 places, 194 transitions, 1665 flow [2024-06-04 14:08:12,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1665, PETRI_PLACES=241, PETRI_TRANSITIONS=194} [2024-06-04 14:08:12,423 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2024-06-04 14:08:12,423 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 194 transitions, 1665 flow [2024-06-04 14:08:12,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:12,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:12,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:12,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:08:12,423 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)] === [2024-06-04 14:08:12,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1736803245, now seen corresponding path program 4 times [2024-06-04 14:08:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:12,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209962898] [2024-06-04 14:08:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:12,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:13,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:13,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209962898] [2024-06-04 14:08:13,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209962898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:13,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:13,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:13,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862725356] [2024-06-04 14:08:13,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:13,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:13,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:13,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:13,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:13,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:13,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 194 transitions, 1665 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:13,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:13,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:13,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:14,249 INFO L124 PetriNetUnfolderBase]: 629/1129 cut-off events. [2024-06-04 14:08:14,250 INFO L125 PetriNetUnfolderBase]: For 90041/90041 co-relation queries the response was YES. [2024-06-04 14:08:14,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6533 conditions, 1129 events. 629/1129 cut-off events. For 90041/90041 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5686 event pairs, 131 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 6410. Up to 982 conditions per place. [2024-06-04 14:08:14,260 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 188 selfloop transitions, 25 changer transitions 0/215 dead transitions. [2024-06-04 14:08:14,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 215 transitions, 2161 flow [2024-06-04 14:08:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:08:14,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:08:14,261 INFO L175 Difference]: Start difference. First operand has 241 places, 194 transitions, 1665 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:08:14,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 215 transitions, 2161 flow [2024-06-04 14:08:14,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 215 transitions, 2101 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:14,497 INFO L231 Difference]: Finished difference. Result has 243 places, 195 transitions, 1679 flow [2024-06-04 14:08:14,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1679, PETRI_PLACES=243, PETRI_TRANSITIONS=195} [2024-06-04 14:08:14,497 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 211 predicate places. [2024-06-04 14:08:14,497 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 195 transitions, 1679 flow [2024-06-04 14:08:14,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:14,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:14,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:14,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:08:14,498 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)] === [2024-06-04 14:08:14,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:14,498 INFO L85 PathProgramCache]: Analyzing trace with hash 583906015, now seen corresponding path program 1 times [2024-06-04 14:08:14,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:14,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970849884] [2024-06-04 14:08:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:14,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:16,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:16,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:16,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970849884] [2024-06-04 14:08:16,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970849884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:16,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:16,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:16,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566411584] [2024-06-04 14:08:16,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:16,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:16,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:16,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:16,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:16,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 195 transitions, 1679 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:16,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:16,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:16,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:16,647 INFO L124 PetriNetUnfolderBase]: 635/1139 cut-off events. [2024-06-04 14:08:16,647 INFO L125 PetriNetUnfolderBase]: For 92158/92158 co-relation queries the response was YES. [2024-06-04 14:08:16,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6606 conditions, 1139 events. 635/1139 cut-off events. For 92158/92158 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5754 event pairs, 136 based on Foata normal form. 2/1140 useless extension candidates. Maximal degree in co-relation 6482. Up to 1018 conditions per place. [2024-06-04 14:08:16,658 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 191 selfloop transitions, 26 changer transitions 0/219 dead transitions. [2024-06-04 14:08:16,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 219 transitions, 2209 flow [2024-06-04 14:08:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:08:16,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:08:16,662 INFO L175 Difference]: Start difference. First operand has 243 places, 195 transitions, 1679 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:08:16,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 219 transitions, 2209 flow [2024-06-04 14:08:16,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 219 transitions, 2145 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:16,935 INFO L231 Difference]: Finished difference. Result has 246 places, 197 transitions, 1716 flow [2024-06-04 14:08:16,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1716, PETRI_PLACES=246, PETRI_TRANSITIONS=197} [2024-06-04 14:08:16,936 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-04 14:08:16,936 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 197 transitions, 1716 flow [2024-06-04 14:08:16,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:16,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:16,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:16,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:08:16,936 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)] === [2024-06-04 14:08:16,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash -740464647, now seen corresponding path program 5 times [2024-06-04 14:08:16,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:16,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031093634] [2024-06-04 14:08:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:16,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:18,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:18,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031093634] [2024-06-04 14:08:18,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031093634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:18,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:18,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:18,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432692552] [2024-06-04 14:08:18,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:18,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:18,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:18,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:18,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:18,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:18,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 197 transitions, 1716 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:18,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:18,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:18,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:18,872 INFO L124 PetriNetUnfolderBase]: 639/1146 cut-off events. [2024-06-04 14:08:18,872 INFO L125 PetriNetUnfolderBase]: For 93875/93875 co-relation queries the response was YES. [2024-06-04 14:08:18,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6677 conditions, 1146 events. 639/1146 cut-off events. For 93875/93875 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5791 event pairs, 121 based on Foata normal form. 2/1147 useless extension candidates. Maximal degree in co-relation 6552. Up to 953 conditions per place. [2024-06-04 14:08:18,882 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 177 selfloop transitions, 38 changer transitions 0/217 dead transitions. [2024-06-04 14:08:18,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 217 transitions, 2212 flow [2024-06-04 14:08:18,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:08:18,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:08:18,883 INFO L175 Difference]: Start difference. First operand has 246 places, 197 transitions, 1716 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:08:18,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 217 transitions, 2212 flow [2024-06-04 14:08:19,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 217 transitions, 2127 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:19,160 INFO L231 Difference]: Finished difference. Result has 247 places, 198 transitions, 1733 flow [2024-06-04 14:08:19,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1733, PETRI_PLACES=247, PETRI_TRANSITIONS=198} [2024-06-04 14:08:19,161 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 215 predicate places. [2024-06-04 14:08:19,161 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 198 transitions, 1733 flow [2024-06-04 14:08:19,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:19,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:19,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:19,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:08:19,161 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)] === [2024-06-04 14:08:19,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:19,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1316392753, now seen corresponding path program 6 times [2024-06-04 14:08:19,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:19,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594553688] [2024-06-04 14:08:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:19,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:20,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:20,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594553688] [2024-06-04 14:08:20,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594553688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:20,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:20,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:20,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893858665] [2024-06-04 14:08:20,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:20,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:20,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:20,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:20,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:20,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 198 transitions, 1733 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:20,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:20,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:20,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:20,953 INFO L124 PetriNetUnfolderBase]: 643/1154 cut-off events. [2024-06-04 14:08:20,954 INFO L125 PetriNetUnfolderBase]: For 96106/96106 co-relation queries the response was YES. [2024-06-04 14:08:20,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6752 conditions, 1154 events. 643/1154 cut-off events. For 96106/96106 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5895 event pairs, 121 based on Foata normal form. 2/1155 useless extension candidates. Maximal degree in co-relation 6626. Up to 947 conditions per place. [2024-06-04 14:08:20,964 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 177 selfloop transitions, 39 changer transitions 0/218 dead transitions. [2024-06-04 14:08:20,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 218 transitions, 2233 flow [2024-06-04 14:08:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:08:20,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-04 14:08:20,965 INFO L175 Difference]: Start difference. First operand has 247 places, 198 transitions, 1733 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:08:20,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 218 transitions, 2233 flow [2024-06-04 14:08:21,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 218 transitions, 2141 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:21,284 INFO L231 Difference]: Finished difference. Result has 249 places, 199 transitions, 1747 flow [2024-06-04 14:08:21,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1747, PETRI_PLACES=249, PETRI_TRANSITIONS=199} [2024-06-04 14:08:21,285 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2024-06-04 14:08:21,285 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 199 transitions, 1747 flow [2024-06-04 14:08:21,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:21,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:21,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:21,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:08:21,285 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)] === [2024-06-04 14:08:21,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:21,285 INFO L85 PathProgramCache]: Analyzing trace with hash -745053267, now seen corresponding path program 7 times [2024-06-04 14:08:21,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:21,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698885062] [2024-06-04 14:08:21,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:21,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:22,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:22,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698885062] [2024-06-04 14:08:22,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698885062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:22,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:22,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:22,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781725487] [2024-06-04 14:08:22,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:22,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:22,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:22,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:22,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:22,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:22,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 199 transitions, 1747 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:22,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:22,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:22,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:22,969 INFO L124 PetriNetUnfolderBase]: 654/1175 cut-off events. [2024-06-04 14:08:22,969 INFO L125 PetriNetUnfolderBase]: For 107442/107442 co-relation queries the response was YES. [2024-06-04 14:08:22,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7093 conditions, 1175 events. 654/1175 cut-off events. For 107442/107442 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6003 event pairs, 124 based on Foata normal form. 2/1176 useless extension candidates. Maximal degree in co-relation 6966. Up to 925 conditions per place. [2024-06-04 14:08:22,978 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 178 selfloop transitions, 41 changer transitions 0/221 dead transitions. [2024-06-04 14:08:22,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 221 transitions, 2469 flow [2024-06-04 14:08:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:22,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:08:22,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-04 14:08:22,979 INFO L175 Difference]: Start difference. First operand has 249 places, 199 transitions, 1747 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:08:22,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 221 transitions, 2469 flow [2024-06-04 14:08:23,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 221 transitions, 2373 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:23,323 INFO L231 Difference]: Finished difference. Result has 251 places, 201 transitions, 1787 flow [2024-06-04 14:08:23,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1787, PETRI_PLACES=251, PETRI_TRANSITIONS=201} [2024-06-04 14:08:23,323 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-04 14:08:23,323 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 201 transitions, 1787 flow [2024-06-04 14:08:23,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:23,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:23,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:23,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:08:23,324 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)] === [2024-06-04 14:08:23,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:23,324 INFO L85 PathProgramCache]: Analyzing trace with hash -740284723, now seen corresponding path program 2 times [2024-06-04 14:08:23,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:23,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240414494] [2024-06-04 14:08:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:23,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:25,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:25,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240414494] [2024-06-04 14:08:25,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240414494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:25,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:25,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:25,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322575787] [2024-06-04 14:08:25,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:25,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:25,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:25,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:25,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:25,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:25,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 201 transitions, 1787 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:25,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:25,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:25,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:25,956 INFO L124 PetriNetUnfolderBase]: 660/1185 cut-off events. [2024-06-04 14:08:25,957 INFO L125 PetriNetUnfolderBase]: For 109816/109816 co-relation queries the response was YES. [2024-06-04 14:08:25,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7168 conditions, 1185 events. 660/1185 cut-off events. For 109816/109816 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6086 event pairs, 124 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 7040. Up to 982 conditions per place. [2024-06-04 14:08:25,969 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 181 selfloop transitions, 41 changer transitions 0/224 dead transitions. [2024-06-04 14:08:25,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 224 transitions, 2325 flow [2024-06-04 14:08:25,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:08:25,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:08:25,970 INFO L175 Difference]: Start difference. First operand has 251 places, 201 transitions, 1787 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:08:25,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 224 transitions, 2325 flow [2024-06-04 14:08:26,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 224 transitions, 2247 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 14:08:26,303 INFO L231 Difference]: Finished difference. Result has 256 places, 203 transitions, 1844 flow [2024-06-04 14:08:26,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1844, PETRI_PLACES=256, PETRI_TRANSITIONS=203} [2024-06-04 14:08:26,304 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 224 predicate places. [2024-06-04 14:08:26,304 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 203 transitions, 1844 flow [2024-06-04 14:08:26,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:26,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:26,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:26,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:08:26,305 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)] === [2024-06-04 14:08:26,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash -117946365, now seen corresponding path program 8 times [2024-06-04 14:08:26,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:26,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978280553] [2024-06-04 14:08:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:26,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:27,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:27,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978280553] [2024-06-04 14:08:27,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978280553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:27,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:27,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:27,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71100281] [2024-06-04 14:08:27,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:27,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:27,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:27,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:27,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:27,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:27,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 203 transitions, 1844 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:27,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:27,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:27,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:28,265 INFO L124 PetriNetUnfolderBase]: 664/1193 cut-off events. [2024-06-04 14:08:28,265 INFO L125 PetriNetUnfolderBase]: For 112020/112020 co-relation queries the response was YES. [2024-06-04 14:08:28,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7288 conditions, 1193 events. 664/1193 cut-off events. For 112020/112020 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6124 event pairs, 121 based on Foata normal form. 2/1194 useless extension candidates. Maximal degree in co-relation 7158. Up to 1000 conditions per place. [2024-06-04 14:08:28,274 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 182 selfloop transitions, 41 changer transitions 0/225 dead transitions. [2024-06-04 14:08:28,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 225 transitions, 2366 flow [2024-06-04 14:08:28,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:08:28,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:08:28,275 INFO L175 Difference]: Start difference. First operand has 256 places, 203 transitions, 1844 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:08:28,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 225 transitions, 2366 flow [2024-06-04 14:08:28,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 225 transitions, 2247 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:28,643 INFO L231 Difference]: Finished difference. Result has 257 places, 204 transitions, 1835 flow [2024-06-04 14:08:28,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1835, PETRI_PLACES=257, PETRI_TRANSITIONS=204} [2024-06-04 14:08:28,644 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 225 predicate places. [2024-06-04 14:08:28,644 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 204 transitions, 1835 flow [2024-06-04 14:08:28,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:28,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:28,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:28,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:08:28,644 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)] === [2024-06-04 14:08:28,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:28,644 INFO L85 PathProgramCache]: Analyzing trace with hash -117939421, now seen corresponding path program 3 times [2024-06-04 14:08:28,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:28,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203362268] [2024-06-04 14:08:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:28,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:30,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:30,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203362268] [2024-06-04 14:08:30,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203362268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:30,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:30,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:30,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246403198] [2024-06-04 14:08:30,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:30,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:30,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:30,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:30,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:30,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:30,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 204 transitions, 1835 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:30,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:30,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:30,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:31,131 INFO L124 PetriNetUnfolderBase]: 670/1203 cut-off events. [2024-06-04 14:08:31,131 INFO L125 PetriNetUnfolderBase]: For 114318/114318 co-relation queries the response was YES. [2024-06-04 14:08:31,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7359 conditions, 1203 events. 670/1203 cut-off events. For 114318/114318 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6205 event pairs, 121 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 7228. Up to 1000 conditions per place. [2024-06-04 14:08:31,142 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 183 selfloop transitions, 44 changer transitions 0/229 dead transitions. [2024-06-04 14:08:31,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 229 transitions, 2395 flow [2024-06-04 14:08:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:31,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:08:31,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:08:31,143 INFO L175 Difference]: Start difference. First operand has 257 places, 204 transitions, 1835 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:08:31,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 229 transitions, 2395 flow [2024-06-04 14:08:31,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 229 transitions, 2297 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:31,499 INFO L231 Difference]: Finished difference. Result has 260 places, 206 transitions, 1882 flow [2024-06-04 14:08:31,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1882, PETRI_PLACES=260, PETRI_TRANSITIONS=206} [2024-06-04 14:08:31,499 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2024-06-04 14:08:31,499 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 206 transitions, 1882 flow [2024-06-04 14:08:31,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:31,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:31,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:31,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:08:31,500 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)] === [2024-06-04 14:08:31,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash -117708781, now seen corresponding path program 4 times [2024-06-04 14:08:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:31,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140395313] [2024-06-04 14:08:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:33,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:33,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140395313] [2024-06-04 14:08:33,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140395313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:33,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:33,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:33,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241709555] [2024-06-04 14:08:33,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:33,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:33,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:33,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:33,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:33,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 206 transitions, 1882 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:33,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:33,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:33,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:33,987 INFO L124 PetriNetUnfolderBase]: 676/1213 cut-off events. [2024-06-04 14:08:33,987 INFO L125 PetriNetUnfolderBase]: For 116932/116932 co-relation queries the response was YES. [2024-06-04 14:08:33,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7463 conditions, 1213 events. 676/1213 cut-off events. For 116932/116932 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6291 event pairs, 119 based on Foata normal form. 2/1214 useless extension candidates. Maximal degree in co-relation 7331. Up to 967 conditions per place. [2024-06-04 14:08:33,998 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 176 selfloop transitions, 54 changer transitions 0/232 dead transitions. [2024-06-04 14:08:33,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 232 transitions, 2456 flow [2024-06-04 14:08:33,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:08:33,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-04 14:08:33,998 INFO L175 Difference]: Start difference. First operand has 260 places, 206 transitions, 1882 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:08:33,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 232 transitions, 2456 flow [2024-06-04 14:08:34,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 232 transitions, 2327 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:34,397 INFO L231 Difference]: Finished difference. Result has 262 places, 208 transitions, 1922 flow [2024-06-04 14:08:34,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1922, PETRI_PLACES=262, PETRI_TRANSITIONS=208} [2024-06-04 14:08:34,397 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 230 predicate places. [2024-06-04 14:08:34,398 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 208 transitions, 1922 flow [2024-06-04 14:08:34,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:34,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:34,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:34,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:08:34,398 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)] === [2024-06-04 14:08:34,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash -124375455, now seen corresponding path program 9 times [2024-06-04 14:08:34,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:34,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874257950] [2024-06-04 14:08:34,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:34,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874257950] [2024-06-04 14:08:35,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874257950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:35,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:35,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:35,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46236130] [2024-06-04 14:08:35,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:35,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:35,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:35,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:35,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:35,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 208 transitions, 1922 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:35,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:35,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:35,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:36,255 INFO L124 PetriNetUnfolderBase]: 680/1221 cut-off events. [2024-06-04 14:08:36,255 INFO L125 PetriNetUnfolderBase]: For 119018/119018 co-relation queries the response was YES. [2024-06-04 14:08:36,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7553 conditions, 1221 events. 680/1221 cut-off events. For 119018/119018 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6336 event pairs, 127 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 7420. Up to 1028 conditions per place. [2024-06-04 14:08:36,265 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 188 selfloop transitions, 39 changer transitions 0/229 dead transitions. [2024-06-04 14:08:36,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 229 transitions, 2450 flow [2024-06-04 14:08:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:08:36,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:08:36,268 INFO L175 Difference]: Start difference. First operand has 262 places, 208 transitions, 1922 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:08:36,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 229 transitions, 2450 flow [2024-06-04 14:08:36,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 229 transitions, 2297 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:36,632 INFO L231 Difference]: Finished difference. Result has 263 places, 209 transitions, 1877 flow [2024-06-04 14:08:36,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1877, PETRI_PLACES=263, PETRI_TRANSITIONS=209} [2024-06-04 14:08:36,632 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 231 predicate places. [2024-06-04 14:08:36,633 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 209 transitions, 1877 flow [2024-06-04 14:08:36,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:36,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:36,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:08:36,633 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)] === [2024-06-04 14:08:36,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:36,633 INFO L85 PathProgramCache]: Analyzing trace with hash -457791775, now seen corresponding path program 10 times [2024-06-04 14:08:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:36,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331414530] [2024-06-04 14:08:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:36,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:37,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:37,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331414530] [2024-06-04 14:08:37,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331414530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:37,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:37,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361257593] [2024-06-04 14:08:37,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:37,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:37,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:37,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:37,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:38,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:38,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 209 transitions, 1877 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:38,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:38,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:38,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:38,490 INFO L124 PetriNetUnfolderBase]: 677/1216 cut-off events. [2024-06-04 14:08:38,490 INFO L125 PetriNetUnfolderBase]: For 111218/111218 co-relation queries the response was YES. [2024-06-04 14:08:38,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 1216 events. 677/1216 cut-off events. For 111218/111218 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6304 event pairs, 124 based on Foata normal form. 2/1217 useless extension candidates. Maximal degree in co-relation 7114. Up to 1003 conditions per place. [2024-06-04 14:08:38,501 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 186 selfloop transitions, 41 changer transitions 0/229 dead transitions. [2024-06-04 14:08:38,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 229 transitions, 2381 flow [2024-06-04 14:08:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:38,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:08:38,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:08:38,502 INFO L175 Difference]: Start difference. First operand has 263 places, 209 transitions, 1877 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:08:38,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 229 transitions, 2381 flow [2024-06-04 14:08:38,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 229 transitions, 2271 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:08:38,958 INFO L231 Difference]: Finished difference. Result has 265 places, 209 transitions, 1853 flow [2024-06-04 14:08:38,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1767, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1853, PETRI_PLACES=265, PETRI_TRANSITIONS=209} [2024-06-04 14:08:38,959 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 233 predicate places. [2024-06-04 14:08:38,959 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 209 transitions, 1853 flow [2024-06-04 14:08:38,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:38,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:38,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:38,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:08:38,959 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)] === [2024-06-04 14:08:38,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:38,959 INFO L85 PathProgramCache]: Analyzing trace with hash -117700411, now seen corresponding path program 5 times [2024-06-04 14:08:38,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:38,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765798405] [2024-06-04 14:08:38,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:38,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:40,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:40,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765798405] [2024-06-04 14:08:40,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765798405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:40,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:40,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:40,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607910720] [2024-06-04 14:08:40,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:40,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:40,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:40,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:40,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:40,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:40,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 209 transitions, 1853 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:40,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:40,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:40,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:41,293 INFO L124 PetriNetUnfolderBase]: 693/1242 cut-off events. [2024-06-04 14:08:41,294 INFO L125 PetriNetUnfolderBase]: For 124008/124008 co-relation queries the response was YES. [2024-06-04 14:08:41,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7634 conditions, 1242 events. 693/1242 cut-off events. For 124008/124008 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6459 event pairs, 120 based on Foata normal form. 2/1243 useless extension candidates. Maximal degree in co-relation 7499. Up to 942 conditions per place. [2024-06-04 14:08:41,306 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 171 selfloop transitions, 66 changer transitions 0/239 dead transitions. [2024-06-04 14:08:41,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 239 transitions, 2709 flow [2024-06-04 14:08:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 14:08:41,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-04 14:08:41,307 INFO L175 Difference]: Start difference. First operand has 265 places, 209 transitions, 1853 flow. Second operand 11 states and 128 transitions. [2024-06-04 14:08:41,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 239 transitions, 2709 flow [2024-06-04 14:08:41,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 239 transitions, 2609 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:41,779 INFO L231 Difference]: Finished difference. Result has 267 places, 213 transitions, 2007 flow [2024-06-04 14:08:41,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2007, PETRI_PLACES=267, PETRI_TRANSITIONS=213} [2024-06-04 14:08:41,780 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 235 predicate places. [2024-06-04 14:08:41,780 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 213 transitions, 2007 flow [2024-06-04 14:08:41,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:41,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:41,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:41,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:08:41,781 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)] === [2024-06-04 14:08:41,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1145505749, now seen corresponding path program 6 times [2024-06-04 14:08:41,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:41,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942777719] [2024-06-04 14:08:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:41,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:43,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:43,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942777719] [2024-06-04 14:08:43,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942777719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:43,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:43,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:43,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094632782] [2024-06-04 14:08:43,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:43,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:43,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:43,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:43,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:43,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:43,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 213 transitions, 2007 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:43,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:43,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:43,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:43,894 INFO L124 PetriNetUnfolderBase]: 689/1236 cut-off events. [2024-06-04 14:08:43,894 INFO L125 PetriNetUnfolderBase]: For 116131/116131 co-relation queries the response was YES. [2024-06-04 14:08:43,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7487 conditions, 1236 events. 689/1236 cut-off events. For 116131/116131 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6430 event pairs, 124 based on Foata normal form. 2/1237 useless extension candidates. Maximal degree in co-relation 7351. Up to 1033 conditions per place. [2024-06-04 14:08:43,906 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 191 selfloop transitions, 42 changer transitions 0/235 dead transitions. [2024-06-04 14:08:43,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 235 transitions, 2527 flow [2024-06-04 14:08:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:08:43,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:08:43,907 INFO L175 Difference]: Start difference. First operand has 267 places, 213 transitions, 2007 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:08:43,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 235 transitions, 2527 flow [2024-06-04 14:08:44,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 235 transitions, 2367 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:44,327 INFO L231 Difference]: Finished difference. Result has 271 places, 213 transitions, 1936 flow [2024-06-04 14:08:44,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1936, PETRI_PLACES=271, PETRI_TRANSITIONS=213} [2024-06-04 14:08:44,327 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 239 predicate places. [2024-06-04 14:08:44,327 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 213 transitions, 1936 flow [2024-06-04 14:08:44,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:44,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:44,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:44,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:08:44,328 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)] === [2024-06-04 14:08:44,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:44,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1139010319, now seen corresponding path program 1 times [2024-06-04 14:08:44,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:44,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855768235] [2024-06-04 14:08:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:44,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:45,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:45,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855768235] [2024-06-04 14:08:45,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855768235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:45,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:45,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:45,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723493101] [2024-06-04 14:08:45,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:45,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:45,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:45,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:45,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:45,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:45,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 213 transitions, 1936 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:45,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:45,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:45,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:46,343 INFO L124 PetriNetUnfolderBase]: 686/1232 cut-off events. [2024-06-04 14:08:46,343 INFO L125 PetriNetUnfolderBase]: For 106997/106997 co-relation queries the response was YES. [2024-06-04 14:08:46,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7207 conditions, 1232 events. 686/1232 cut-off events. For 106997/106997 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6424 event pairs, 151 based on Foata normal form. 2/1233 useless extension candidates. Maximal degree in co-relation 7069. Up to 1115 conditions per place. [2024-06-04 14:08:46,352 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 200 selfloop transitions, 32 changer transitions 0/234 dead transitions. [2024-06-04 14:08:46,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 234 transitions, 2464 flow [2024-06-04 14:08:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:08:46,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:08:46,353 INFO L175 Difference]: Start difference. First operand has 271 places, 213 transitions, 1936 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:08:46,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 234 transitions, 2464 flow [2024-06-04 14:08:46,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 234 transitions, 2344 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-04 14:08:46,764 INFO L231 Difference]: Finished difference. Result has 272 places, 213 transitions, 1886 flow [2024-06-04 14:08:46,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1886, PETRI_PLACES=272, PETRI_TRANSITIONS=213} [2024-06-04 14:08:46,765 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 240 predicate places. [2024-06-04 14:08:46,765 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 213 transitions, 1886 flow [2024-06-04 14:08:46,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:46,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:46,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:46,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:08:46,765 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)] === [2024-06-04 14:08:46,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash -919227219, now seen corresponding path program 11 times [2024-06-04 14:08:46,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:46,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453921085] [2024-06-04 14:08:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:46,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:47,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:47,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453921085] [2024-06-04 14:08:47,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453921085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:47,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:47,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:47,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527701009] [2024-06-04 14:08:47,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:47,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:47,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:47,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:47,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:48,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:48,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 213 transitions, 1886 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:48,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:48,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:48,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:48,456 INFO L124 PetriNetUnfolderBase]: 690/1241 cut-off events. [2024-06-04 14:08:48,456 INFO L125 PetriNetUnfolderBase]: For 109291/109294 co-relation queries the response was YES. [2024-06-04 14:08:48,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7214 conditions, 1241 events. 690/1241 cut-off events. For 109291/109294 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6472 event pairs, 97 based on Foata normal form. 2/1237 useless extension candidates. Maximal degree in co-relation 7075. Up to 927 conditions per place. [2024-06-04 14:08:48,468 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 175 selfloop transitions, 58 changer transitions 0/235 dead transitions. [2024-06-04 14:08:48,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 235 transitions, 2432 flow [2024-06-04 14:08:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 14:08:48,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-04 14:08:48,469 INFO L175 Difference]: Start difference. First operand has 272 places, 213 transitions, 1886 flow. Second operand 10 states and 119 transitions. [2024-06-04 14:08:48,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 235 transitions, 2432 flow [2024-06-04 14:08:48,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 235 transitions, 2346 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:48,977 INFO L231 Difference]: Finished difference. Result has 273 places, 214 transitions, 1948 flow [2024-06-04 14:08:48,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1948, PETRI_PLACES=273, PETRI_TRANSITIONS=214} [2024-06-04 14:08:48,977 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 241 predicate places. [2024-06-04 14:08:48,977 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 214 transitions, 1948 flow [2024-06-04 14:08:48,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:48,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:48,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:48,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:08:48,977 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)] === [2024-06-04 14:08:48,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash -918981265, now seen corresponding path program 7 times [2024-06-04 14:08:48,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:48,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197010766] [2024-06-04 14:08:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:48,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:50,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:50,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197010766] [2024-06-04 14:08:50,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197010766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:50,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:50,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:08:50,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282965149] [2024-06-04 14:08:50,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:50,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:08:50,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:50,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:08:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:08:50,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:50,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 214 transitions, 1948 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:50,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:50,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:50,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:50,891 INFO L124 PetriNetUnfolderBase]: 696/1251 cut-off events. [2024-06-04 14:08:50,892 INFO L125 PetriNetUnfolderBase]: For 109533/109536 co-relation queries the response was YES. [2024-06-04 14:08:50,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7357 conditions, 1251 events. 696/1251 cut-off events. For 109533/109536 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6531 event pairs, 80 based on Foata normal form. 2/1247 useless extension candidates. Maximal degree in co-relation 7217. Up to 660 conditions per place. [2024-06-04 14:08:50,903 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 110 selfloop transitions, 129 changer transitions 0/241 dead transitions. [2024-06-04 14:08:50,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 241 transitions, 2814 flow [2024-06-04 14:08:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:08:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:08:50,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:08:50,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-04 14:08:50,904 INFO L175 Difference]: Start difference. First operand has 273 places, 214 transitions, 1948 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:08:50,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 241 transitions, 2814 flow [2024-06-04 14:08:51,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 241 transitions, 2639 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:51,267 INFO L231 Difference]: Finished difference. Result has 274 places, 218 transitions, 2172 flow [2024-06-04 14:08:51,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2172, PETRI_PLACES=274, PETRI_TRANSITIONS=218} [2024-06-04 14:08:51,267 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 242 predicate places. [2024-06-04 14:08:51,267 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 218 transitions, 2172 flow [2024-06-04 14:08:51,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:51,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:51,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:51,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:08:51,268 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)] === [2024-06-04 14:08:51,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:51,268 INFO L85 PathProgramCache]: Analyzing trace with hash 782751771, now seen corresponding path program 8 times [2024-06-04 14:08:51,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:51,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237037088] [2024-06-04 14:08:51,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:51,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:53,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:53,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237037088] [2024-06-04 14:08:53,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237037088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:53,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:53,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:53,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903481066] [2024-06-04 14:08:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:53,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:53,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:53,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:53,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:53,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 218 transitions, 2172 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:53,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:53,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:53,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:53,859 INFO L124 PetriNetUnfolderBase]: 702/1261 cut-off events. [2024-06-04 14:08:53,859 INFO L125 PetriNetUnfolderBase]: For 105827/105830 co-relation queries the response was YES. [2024-06-04 14:08:53,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7554 conditions, 1261 events. 702/1261 cut-off events. For 105827/105830 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6598 event pairs, 85 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 7414. Up to 923 conditions per place. [2024-06-04 14:08:53,871 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 167 selfloop transitions, 75 changer transitions 0/244 dead transitions. [2024-06-04 14:08:53,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 244 transitions, 2782 flow [2024-06-04 14:08:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:53,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:08:53,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-04 14:08:53,871 INFO L175 Difference]: Start difference. First operand has 274 places, 218 transitions, 2172 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:08:53,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 244 transitions, 2782 flow [2024-06-04 14:08:54,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 244 transitions, 2556 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-04 14:08:54,258 INFO L231 Difference]: Finished difference. Result has 278 places, 220 transitions, 2169 flow [2024-06-04 14:08:54,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2169, PETRI_PLACES=278, PETRI_TRANSITIONS=220} [2024-06-04 14:08:54,258 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 246 predicate places. [2024-06-04 14:08:54,258 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 220 transitions, 2169 flow [2024-06-04 14:08:54,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:54,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:54,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:54,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:08:54,259 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)] === [2024-06-04 14:08:54,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:54,259 INFO L85 PathProgramCache]: Analyzing trace with hash -918989635, now seen corresponding path program 9 times [2024-06-04 14:08:54,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:54,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800352271] [2024-06-04 14:08:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:54,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:56,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800352271] [2024-06-04 14:08:56,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800352271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:56,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:56,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:08:56,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211689141] [2024-06-04 14:08:56,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:56,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:08:56,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:08:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:08:56,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:56,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 220 transitions, 2169 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:56,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:56,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:56,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:56,749 INFO L124 PetriNetUnfolderBase]: 724/1297 cut-off events. [2024-06-04 14:08:56,749 INFO L125 PetriNetUnfolderBase]: For 116083/116086 co-relation queries the response was YES. [2024-06-04 14:08:56,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8015 conditions, 1297 events. 724/1297 cut-off events. For 116083/116086 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6807 event pairs, 98 based on Foata normal form. 2/1293 useless extension candidates. Maximal degree in co-relation 7874. Up to 910 conditions per place. [2024-06-04 14:08:56,762 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 179 selfloop transitions, 70 changer transitions 0/251 dead transitions. [2024-06-04 14:08:56,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 251 transitions, 3065 flow [2024-06-04 14:08:56,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:56,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:08:56,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691460055096419 [2024-06-04 14:08:56,762 INFO L175 Difference]: Start difference. First operand has 278 places, 220 transitions, 2169 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:08:56,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 251 transitions, 3065 flow [2024-06-04 14:08:57,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 251 transitions, 2872 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:08:57,206 INFO L231 Difference]: Finished difference. Result has 281 places, 226 transitions, 2265 flow [2024-06-04 14:08:57,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2265, PETRI_PLACES=281, PETRI_TRANSITIONS=226} [2024-06-04 14:08:57,207 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 249 predicate places. [2024-06-04 14:08:57,207 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 226 transitions, 2265 flow [2024-06-04 14:08:57,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:57,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:08:57,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:08:57,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:08:57,208 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:08:57,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:08:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash -919220275, now seen corresponding path program 10 times [2024-06-04 14:08:57,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:08:57,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753935370] [2024-06-04 14:08:57,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:08:57,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:08:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:08:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:08:59,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:08:59,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753935370] [2024-06-04 14:08:59,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753935370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:08:59,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:08:59,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:08:59,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054886952] [2024-06-04 14:08:59,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:08:59,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:08:59,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:08:59,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:08:59,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:08:59,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:08:59,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 226 transitions, 2265 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:08:59,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:08:59,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:08:59,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:08:59,740 INFO L124 PetriNetUnfolderBase]: 730/1307 cut-off events. [2024-06-04 14:08:59,740 INFO L125 PetriNetUnfolderBase]: For 118671/118674 co-relation queries the response was YES. [2024-06-04 14:08:59,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8089 conditions, 1307 events. 730/1307 cut-off events. For 118671/118674 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6854 event pairs, 100 based on Foata normal form. 2/1303 useless extension candidates. Maximal degree in co-relation 7946. Up to 983 conditions per place. [2024-06-04 14:08:59,752 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 188 selfloop transitions, 61 changer transitions 0/251 dead transitions. [2024-06-04 14:08:59,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 251 transitions, 2883 flow [2024-06-04 14:08:59,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:08:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:08:59,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:08:59,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-04 14:08:59,753 INFO L175 Difference]: Start difference. First operand has 281 places, 226 transitions, 2265 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:08:59,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 251 transitions, 2883 flow [2024-06-04 14:09:00,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 251 transitions, 2740 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-04 14:09:00,211 INFO L231 Difference]: Finished difference. Result has 286 places, 228 transitions, 2315 flow [2024-06-04 14:09:00,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2315, PETRI_PLACES=286, PETRI_TRANSITIONS=228} [2024-06-04 14:09:00,211 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-04 14:09:00,211 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 228 transitions, 2315 flow [2024-06-04 14:09:00,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:00,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:00,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:00,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:09:00,211 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:00,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:00,211 INFO L85 PathProgramCache]: Analyzing trace with hash -925656309, now seen corresponding path program 12 times [2024-06-04 14:09:00,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:00,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058121390] [2024-06-04 14:09:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:00,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:01,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058121390] [2024-06-04 14:09:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058121390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:01,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:01,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:01,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73378975] [2024-06-04 14:09:01,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:01,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:01,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:01,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:01,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 228 transitions, 2315 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:01,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:01,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:01,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:02,236 INFO L124 PetriNetUnfolderBase]: 734/1315 cut-off events. [2024-06-04 14:09:02,236 INFO L125 PetriNetUnfolderBase]: For 120650/120653 co-relation queries the response was YES. [2024-06-04 14:09:02,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8209 conditions, 1315 events. 734/1315 cut-off events. For 120650/120653 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6898 event pairs, 100 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 8064. Up to 1001 conditions per place. [2024-06-04 14:09:02,250 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 190 selfloop transitions, 57 changer transitions 0/249 dead transitions. [2024-06-04 14:09:02,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 249 transitions, 2885 flow [2024-06-04 14:09:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 14:09:02,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-04 14:09:02,250 INFO L175 Difference]: Start difference. First operand has 286 places, 228 transitions, 2315 flow. Second operand 10 states and 119 transitions. [2024-06-04 14:09:02,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 249 transitions, 2885 flow [2024-06-04 14:09:02,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 249 transitions, 2724 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:02,755 INFO L231 Difference]: Finished difference. Result has 287 places, 229 transitions, 2300 flow [2024-06-04 14:09:02,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2300, PETRI_PLACES=287, PETRI_TRANSITIONS=229} [2024-06-04 14:09:02,756 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-04 14:09:02,756 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 229 transitions, 2300 flow [2024-06-04 14:09:02,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:02,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:02,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:02,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:09:02,756 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:02,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:02,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1587972947, now seen corresponding path program 13 times [2024-06-04 14:09:02,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:02,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461170894] [2024-06-04 14:09:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:02,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:03,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:03,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461170894] [2024-06-04 14:09:03,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461170894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:03,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:03,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:03,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795564020] [2024-06-04 14:09:03,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:03,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:03,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:04,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:04,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 229 transitions, 2300 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:04,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:04,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:04,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:04,509 INFO L124 PetriNetUnfolderBase]: 738/1323 cut-off events. [2024-06-04 14:09:04,509 INFO L125 PetriNetUnfolderBase]: For 122999/123002 co-relation queries the response was YES. [2024-06-04 14:09:04,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8242 conditions, 1323 events. 738/1323 cut-off events. For 122999/123002 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6989 event pairs, 86 based on Foata normal form. 2/1319 useless extension candidates. Maximal degree in co-relation 8096. Up to 1009 conditions per place. [2024-06-04 14:09:04,522 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 179 selfloop transitions, 69 changer transitions 0/250 dead transitions. [2024-06-04 14:09:04,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 250 transitions, 2876 flow [2024-06-04 14:09:04,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:04,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:04,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:09:04,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:09:04,523 INFO L175 Difference]: Start difference. First operand has 287 places, 229 transitions, 2300 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:09:04,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 250 transitions, 2876 flow [2024-06-04 14:09:04,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 250 transitions, 2740 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:04,978 INFO L231 Difference]: Finished difference. Result has 289 places, 230 transitions, 2336 flow [2024-06-04 14:09:04,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2336, PETRI_PLACES=289, PETRI_TRANSITIONS=230} [2024-06-04 14:09:04,978 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 257 predicate places. [2024-06-04 14:09:04,978 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 230 transitions, 2336 flow [2024-06-04 14:09:04,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:04,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:04,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:04,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:09:04,979 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:04,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:04,979 INFO L85 PathProgramCache]: Analyzing trace with hash 49606453, now seen corresponding path program 11 times [2024-06-04 14:09:04,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:04,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473748169] [2024-06-04 14:09:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:06,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:06,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473748169] [2024-06-04 14:09:06,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473748169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:06,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:06,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:06,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973003970] [2024-06-04 14:09:06,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:06,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:06,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:06,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:06,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:06,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:06,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 230 transitions, 2336 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:06,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:06,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:06,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:07,245 INFO L124 PetriNetUnfolderBase]: 744/1333 cut-off events. [2024-06-04 14:09:07,245 INFO L125 PetriNetUnfolderBase]: For 125270/125273 co-relation queries the response was YES. [2024-06-04 14:09:07,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8373 conditions, 1333 events. 744/1333 cut-off events. For 125270/125273 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7046 event pairs, 91 based on Foata normal form. 2/1329 useless extension candidates. Maximal degree in co-relation 8226. Up to 1009 conditions per place. [2024-06-04 14:09:07,259 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 180 selfloop transitions, 72 changer transitions 0/254 dead transitions. [2024-06-04 14:09:07,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 254 transitions, 2958 flow [2024-06-04 14:09:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:09:07,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-04 14:09:07,260 INFO L175 Difference]: Start difference. First operand has 289 places, 230 transitions, 2336 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:09:07,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 254 transitions, 2958 flow [2024-06-04 14:09:07,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 254 transitions, 2796 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:07,675 INFO L231 Difference]: Finished difference. Result has 292 places, 232 transitions, 2389 flow [2024-06-04 14:09:07,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2389, PETRI_PLACES=292, PETRI_TRANSITIONS=232} [2024-06-04 14:09:07,676 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 260 predicate places. [2024-06-04 14:09:07,676 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 232 transitions, 2389 flow [2024-06-04 14:09:07,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:07,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:07,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:07,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:09:07,677 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:07,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:07,677 INFO L85 PathProgramCache]: Analyzing trace with hash 711911497, now seen corresponding path program 14 times [2024-06-04 14:09:07,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:07,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041812242] [2024-06-04 14:09:07,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:07,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:09,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:09,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041812242] [2024-06-04 14:09:09,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041812242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:09,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:09,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:09,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336360853] [2024-06-04 14:09:09,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:09,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:09,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:09,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:09,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:09,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:09,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 232 transitions, 2389 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:09,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:09,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:09,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:09,770 INFO L124 PetriNetUnfolderBase]: 748/1341 cut-off events. [2024-06-04 14:09:09,770 INFO L125 PetriNetUnfolderBase]: For 127816/127819 co-relation queries the response was YES. [2024-06-04 14:09:09,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8439 conditions, 1341 events. 748/1341 cut-off events. For 127816/127819 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7114 event pairs, 102 based on Foata normal form. 2/1337 useless extension candidates. Maximal degree in co-relation 8291. Up to 1007 conditions per place. [2024-06-04 14:09:09,784 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 192 selfloop transitions, 59 changer transitions 0/253 dead transitions. [2024-06-04 14:09:09,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 253 transitions, 2971 flow [2024-06-04 14:09:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:09,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 14:09:09,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-04 14:09:09,785 INFO L175 Difference]: Start difference. First operand has 292 places, 232 transitions, 2389 flow. Second operand 10 states and 119 transitions. [2024-06-04 14:09:09,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 253 transitions, 2971 flow [2024-06-04 14:09:10,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 253 transitions, 2776 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:10,284 INFO L231 Difference]: Finished difference. Result has 293 places, 233 transitions, 2348 flow [2024-06-04 14:09:10,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2348, PETRI_PLACES=293, PETRI_TRANSITIONS=233} [2024-06-04 14:09:10,284 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-04 14:09:10,284 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 233 transitions, 2348 flow [2024-06-04 14:09:10,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:10,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:10,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:10,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:09:10,285 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:10,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:10,285 INFO L85 PathProgramCache]: Analyzing trace with hash 712096071, now seen corresponding path program 12 times [2024-06-04 14:09:10,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:10,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959119697] [2024-06-04 14:09:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:12,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:12,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959119697] [2024-06-04 14:09:12,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959119697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:12,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:12,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255682871] [2024-06-04 14:09:12,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:12,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:12,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:12,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:12,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:12,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 233 transitions, 2348 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:12,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:12,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:12,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:12,800 INFO L124 PetriNetUnfolderBase]: 754/1351 cut-off events. [2024-06-04 14:09:12,800 INFO L125 PetriNetUnfolderBase]: For 130178/130181 co-relation queries the response was YES. [2024-06-04 14:09:12,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8448 conditions, 1351 events. 754/1351 cut-off events. For 130178/130181 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7172 event pairs, 105 based on Foata normal form. 2/1347 useless extension candidates. Maximal degree in co-relation 8299. Up to 1027 conditions per place. [2024-06-04 14:09:12,813 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 195 selfloop transitions, 60 changer transitions 0/257 dead transitions. [2024-06-04 14:09:12,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 257 transitions, 2970 flow [2024-06-04 14:09:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:09:12,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-04 14:09:12,814 INFO L175 Difference]: Start difference. First operand has 293 places, 233 transitions, 2348 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:09:12,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 257 transitions, 2970 flow [2024-06-04 14:09:13,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 257 transitions, 2826 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:13,240 INFO L231 Difference]: Finished difference. Result has 296 places, 235 transitions, 2391 flow [2024-06-04 14:09:13,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2391, PETRI_PLACES=296, PETRI_TRANSITIONS=235} [2024-06-04 14:09:13,240 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 264 predicate places. [2024-06-04 14:09:13,241 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 235 transitions, 2391 flow [2024-06-04 14:09:13,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:13,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:13,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:13,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:09:13,241 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:13,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash -731849591, now seen corresponding path program 13 times [2024-06-04 14:09:13,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951700820] [2024-06-04 14:09:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951700820] [2024-06-04 14:09:15,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951700820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:15,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:15,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:15,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107677610] [2024-06-04 14:09:15,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:15,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:15,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:15,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:15,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:15,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 235 transitions, 2391 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:15,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:15,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:15,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:16,066 INFO L124 PetriNetUnfolderBase]: 760/1361 cut-off events. [2024-06-04 14:09:16,067 INFO L125 PetriNetUnfolderBase]: For 132318/132321 co-relation queries the response was YES. [2024-06-04 14:09:16,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8484 conditions, 1361 events. 760/1361 cut-off events. For 132318/132321 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7231 event pairs, 75 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 8334. Up to 872 conditions per place. [2024-06-04 14:09:16,078 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 153 selfloop transitions, 111 changer transitions 0/266 dead transitions. [2024-06-04 14:09:16,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 266 transitions, 3250 flow [2024-06-04 14:09:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:09:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:09:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 14:09:16,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:09:16,079 INFO L175 Difference]: Start difference. First operand has 296 places, 235 transitions, 2391 flow. Second operand 12 states and 140 transitions. [2024-06-04 14:09:16,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 266 transitions, 3250 flow [2024-06-04 14:09:16,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 266 transitions, 3087 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:16,589 INFO L231 Difference]: Finished difference. Result has 301 places, 239 transitions, 2508 flow [2024-06-04 14:09:16,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2508, PETRI_PLACES=301, PETRI_TRANSITIONS=239} [2024-06-04 14:09:16,589 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 269 predicate places. [2024-06-04 14:09:16,589 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 239 transitions, 2508 flow [2024-06-04 14:09:16,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:16,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:16,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:16,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:09:16,590 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:16,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:16,590 INFO L85 PathProgramCache]: Analyzing trace with hash -731857961, now seen corresponding path program 14 times [2024-06-04 14:09:16,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:16,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064415483] [2024-06-04 14:09:16,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:16,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:18,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:18,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064415483] [2024-06-04 14:09:18,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064415483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:18,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:18,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:18,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073414371] [2024-06-04 14:09:18,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:18,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:18,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:18,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:18,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:18,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:18,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 239 transitions, 2508 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:18,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:18,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:18,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:18,729 INFO L124 PetriNetUnfolderBase]: 756/1353 cut-off events. [2024-06-04 14:09:18,729 INFO L125 PetriNetUnfolderBase]: For 122212/122212 co-relation queries the response was YES. [2024-06-04 14:09:18,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8387 conditions, 1353 events. 756/1353 cut-off events. For 122212/122212 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7211 event pairs, 187 based on Foata normal form. 2/1354 useless extension candidates. Maximal degree in co-relation 8234. Up to 1280 conditions per place. [2024-06-04 14:09:18,742 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 227 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2024-06-04 14:09:18,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 255 transitions, 3054 flow [2024-06-04 14:09:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:09:18,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-04 14:09:18,742 INFO L175 Difference]: Start difference. First operand has 301 places, 239 transitions, 2508 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:09:18,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 255 transitions, 3054 flow [2024-06-04 14:09:19,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 255 transitions, 2794 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:19,155 INFO L231 Difference]: Finished difference. Result has 304 places, 239 transitions, 2305 flow [2024-06-04 14:09:19,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2305, PETRI_PLACES=304, PETRI_TRANSITIONS=239} [2024-06-04 14:09:19,155 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 272 predicate places. [2024-06-04 14:09:19,155 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 239 transitions, 2305 flow [2024-06-04 14:09:19,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:19,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:19,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:19,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:09:19,156 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:19,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:19,156 INFO L85 PathProgramCache]: Analyzing trace with hash 541213717, now seen corresponding path program 15 times [2024-06-04 14:09:19,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:19,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128694122] [2024-06-04 14:09:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:20,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:20,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128694122] [2024-06-04 14:09:20,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128694122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:20,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:20,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:20,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891934379] [2024-06-04 14:09:20,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:20,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:20,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:20,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:20,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 239 transitions, 2305 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:20,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:20,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:20,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:21,112 INFO L124 PetriNetUnfolderBase]: 760/1363 cut-off events. [2024-06-04 14:09:21,113 INFO L125 PetriNetUnfolderBase]: For 124554/124557 co-relation queries the response was YES. [2024-06-04 14:09:21,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8180 conditions, 1363 events. 760/1363 cut-off events. For 124554/124557 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7276 event pairs, 112 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 8026. Up to 1049 conditions per place. [2024-06-04 14:09:21,127 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 196 selfloop transitions, 60 changer transitions 0/258 dead transitions. [2024-06-04 14:09:21,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 258 transitions, 2893 flow [2024-06-04 14:09:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:21,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:09:21,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:09:21,128 INFO L175 Difference]: Start difference. First operand has 304 places, 239 transitions, 2305 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:09:21,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 258 transitions, 2893 flow [2024-06-04 14:09:21,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 258 transitions, 2836 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:21,633 INFO L231 Difference]: Finished difference. Result has 304 places, 240 transitions, 2406 flow [2024-06-04 14:09:21,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2406, PETRI_PLACES=304, PETRI_TRANSITIONS=240} [2024-06-04 14:09:21,633 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 272 predicate places. [2024-06-04 14:09:21,633 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 240 transitions, 2406 flow [2024-06-04 14:09:21,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:21,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:21,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:21,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:09:21,634 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:21,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:21,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1458038605, now seen corresponding path program 15 times [2024-06-04 14:09:21,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:21,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285222561] [2024-06-04 14:09:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:21,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:23,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:23,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:23,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285222561] [2024-06-04 14:09:23,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285222561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:23,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:23,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:23,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160881568] [2024-06-04 14:09:23,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:23,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:23,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:23,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:23,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:23,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:23,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 240 transitions, 2406 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:23,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:23,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:23,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:24,647 INFO L124 PetriNetUnfolderBase]: 766/1373 cut-off events. [2024-06-04 14:09:24,647 INFO L125 PetriNetUnfolderBase]: For 127509/127512 co-relation queries the response was YES. [2024-06-04 14:09:24,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 1373 events. 766/1373 cut-off events. For 127509/127512 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7343 event pairs, 93 based on Foata normal form. 2/1369 useless extension candidates. Maximal degree in co-relation 8248. Up to 1027 conditions per place. [2024-06-04 14:09:24,662 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 195 selfloop transitions, 69 changer transitions 0/266 dead transitions. [2024-06-04 14:09:24,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 266 transitions, 3062 flow [2024-06-04 14:09:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:09:24,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-04 14:09:24,662 INFO L175 Difference]: Start difference. First operand has 304 places, 240 transitions, 2406 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:09:24,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 266 transitions, 3062 flow [2024-06-04 14:09:25,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 266 transitions, 2914 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:25,152 INFO L231 Difference]: Finished difference. Result has 307 places, 242 transitions, 2471 flow [2024-06-04 14:09:25,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2471, PETRI_PLACES=307, PETRI_TRANSITIONS=242} [2024-06-04 14:09:25,152 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 275 predicate places. [2024-06-04 14:09:25,153 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 242 transitions, 2471 flow [2024-06-04 14:09:25,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:25,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:25,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:25,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:09:25,153 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:25,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1457801021, now seen corresponding path program 16 times [2024-06-04 14:09:25,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:25,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704911540] [2024-06-04 14:09:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:25,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:26,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:26,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704911540] [2024-06-04 14:09:26,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704911540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:26,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:26,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:26,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12253258] [2024-06-04 14:09:26,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:26,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:26,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:26,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:26,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:26,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:26,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 242 transitions, 2471 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:26,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:26,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:26,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:27,016 INFO L124 PetriNetUnfolderBase]: 770/1381 cut-off events. [2024-06-04 14:09:27,016 INFO L125 PetriNetUnfolderBase]: For 129830/129833 co-relation queries the response was YES. [2024-06-04 14:09:27,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8495 conditions, 1381 events. 770/1381 cut-off events. For 129830/129833 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7421 event pairs, 97 based on Foata normal form. 2/1377 useless extension candidates. Maximal degree in co-relation 8339. Up to 1067 conditions per place. [2024-06-04 14:09:27,031 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 201 selfloop transitions, 61 changer transitions 0/264 dead transitions. [2024-06-04 14:09:27,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 264 transitions, 3083 flow [2024-06-04 14:09:27,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:27,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 14:09:27,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-04 14:09:27,032 INFO L175 Difference]: Start difference. First operand has 307 places, 242 transitions, 2471 flow. Second operand 10 states and 118 transitions. [2024-06-04 14:09:27,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 264 transitions, 3083 flow [2024-06-04 14:09:27,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 264 transitions, 2890 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:27,537 INFO L231 Difference]: Finished difference. Result has 308 places, 243 transitions, 2440 flow [2024-06-04 14:09:27,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2278, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2440, PETRI_PLACES=308, PETRI_TRANSITIONS=243} [2024-06-04 14:09:27,538 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 276 predicate places. [2024-06-04 14:09:27,538 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 243 transitions, 2440 flow [2024-06-04 14:09:27,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:27,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:27,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:27,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:09:27,538 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:27,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1096363389, now seen corresponding path program 17 times [2024-06-04 14:09:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:27,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987517597] [2024-06-04 14:09:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:27,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:28,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987517597] [2024-06-04 14:09:28,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987517597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:28,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:28,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:28,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831421712] [2024-06-04 14:09:28,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:28,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:28,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:28,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:28,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:28,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 243 transitions, 2440 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:28,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:28,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:28,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:29,333 INFO L124 PetriNetUnfolderBase]: 774/1389 cut-off events. [2024-06-04 14:09:29,333 INFO L125 PetriNetUnfolderBase]: For 132045/132048 co-relation queries the response was YES. [2024-06-04 14:09:29,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8508 conditions, 1389 events. 774/1389 cut-off events. For 132045/132048 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7459 event pairs, 113 based on Foata normal form. 2/1385 useless extension candidates. Maximal degree in co-relation 8351. Up to 1061 conditions per place. [2024-06-04 14:09:29,348 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 199 selfloop transitions, 61 changer transitions 0/262 dead transitions. [2024-06-04 14:09:29,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 262 transitions, 3040 flow [2024-06-04 14:09:29,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:09:29,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:09:29,349 INFO L175 Difference]: Start difference. First operand has 308 places, 243 transitions, 2440 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:09:29,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 262 transitions, 3040 flow [2024-06-04 14:09:29,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 262 transitions, 2888 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:29,910 INFO L231 Difference]: Finished difference. Result has 310 places, 244 transitions, 2452 flow [2024-06-04 14:09:29,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2288, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2452, PETRI_PLACES=310, PETRI_TRANSITIONS=244} [2024-06-04 14:09:29,910 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-04 14:09:29,910 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 244 transitions, 2452 flow [2024-06-04 14:09:29,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:29,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:29,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:29,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:09:29,910 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:29,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:29,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1091710165, now seen corresponding path program 16 times [2024-06-04 14:09:29,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:29,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403121828] [2024-06-04 14:09:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:29,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:31,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:31,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403121828] [2024-06-04 14:09:31,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403121828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:31,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:31,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:31,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057135508] [2024-06-04 14:09:31,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:31,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:31,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:31,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:31,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:31,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:31,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 244 transitions, 2452 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:31,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:31,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:31,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:32,158 INFO L124 PetriNetUnfolderBase]: 770/1383 cut-off events. [2024-06-04 14:09:32,159 INFO L125 PetriNetUnfolderBase]: For 120857/120860 co-relation queries the response was YES. [2024-06-04 14:09:32,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8185 conditions, 1383 events. 770/1383 cut-off events. For 120857/120860 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7434 event pairs, 113 based on Foata normal form. 2/1379 useless extension candidates. Maximal degree in co-relation 8027. Up to 1059 conditions per place. [2024-06-04 14:09:32,170 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 198 selfloop transitions, 62 changer transitions 0/262 dead transitions. [2024-06-04 14:09:32,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 262 transitions, 3016 flow [2024-06-04 14:09:32,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:09:32,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-04 14:09:32,171 INFO L175 Difference]: Start difference. First operand has 310 places, 244 transitions, 2452 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:09:32,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 262 transitions, 3016 flow [2024-06-04 14:09:32,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 262 transitions, 2822 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:32,703 INFO L231 Difference]: Finished difference. Result has 312 places, 244 transitions, 2388 flow [2024-06-04 14:09:32,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2388, PETRI_PLACES=312, PETRI_TRANSITIONS=244} [2024-06-04 14:09:32,703 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 280 predicate places. [2024-06-04 14:09:32,703 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 244 transitions, 2388 flow [2024-06-04 14:09:32,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:32,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:32,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:32,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:09:32,703 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:32,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1457807965, now seen corresponding path program 17 times [2024-06-04 14:09:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:32,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541136432] [2024-06-04 14:09:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:32,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:34,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:34,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541136432] [2024-06-04 14:09:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541136432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:34,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:34,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:34,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726147888] [2024-06-04 14:09:34,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:34,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:34,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:34,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:34,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:34,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 244 transitions, 2388 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:34,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:34,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:34,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:34,967 INFO L124 PetriNetUnfolderBase]: 776/1393 cut-off events. [2024-06-04 14:09:34,967 INFO L125 PetriNetUnfolderBase]: For 122570/122573 co-relation queries the response was YES. [2024-06-04 14:09:34,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8206 conditions, 1393 events. 776/1393 cut-off events. For 122570/122573 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7516 event pairs, 97 based on Foata normal form. 2/1389 useless extension candidates. Maximal degree in co-relation 8047. Up to 1069 conditions per place. [2024-06-04 14:09:34,979 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 203 selfloop transitions, 64 changer transitions 0/269 dead transitions. [2024-06-04 14:09:34,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 269 transitions, 3050 flow [2024-06-04 14:09:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 14:09:34,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-04 14:09:34,980 INFO L175 Difference]: Start difference. First operand has 312 places, 244 transitions, 2388 flow. Second operand 11 states and 128 transitions. [2024-06-04 14:09:34,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 269 transitions, 3050 flow [2024-06-04 14:09:35,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 269 transitions, 2899 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:35,515 INFO L231 Difference]: Finished difference. Result has 313 places, 246 transitions, 2444 flow [2024-06-04 14:09:35,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2444, PETRI_PLACES=313, PETRI_TRANSITIONS=246} [2024-06-04 14:09:35,515 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2024-06-04 14:09:35,515 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 246 transitions, 2444 flow [2024-06-04 14:09:35,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:35,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:35,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:35,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:09:35,515 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:35,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:35,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1451371931, now seen corresponding path program 18 times [2024-06-04 14:09:35,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:35,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123587609] [2024-06-04 14:09:35,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:35,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:36,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:36,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123587609] [2024-06-04 14:09:36,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123587609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:36,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:36,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:36,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545844804] [2024-06-04 14:09:36,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:36,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:36,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:36,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:36,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:37,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:37,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 246 transitions, 2444 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:37,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:37,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:37,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:37,574 INFO L124 PetriNetUnfolderBase]: 780/1401 cut-off events. [2024-06-04 14:09:37,574 INFO L125 PetriNetUnfolderBase]: For 123194/123197 co-relation queries the response was YES. [2024-06-04 14:09:37,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8291 conditions, 1401 events. 780/1401 cut-off events. For 123194/123197 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7538 event pairs, 101 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 8132. Up to 1087 conditions per place. [2024-06-04 14:09:37,589 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 202 selfloop transitions, 62 changer transitions 0/266 dead transitions. [2024-06-04 14:09:37,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 266 transitions, 3058 flow [2024-06-04 14:09:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:09:37,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:09:37,590 INFO L175 Difference]: Start difference. First operand has 313 places, 246 transitions, 2444 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:09:37,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 266 transitions, 3058 flow [2024-06-04 14:09:38,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 266 transitions, 2871 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:38,183 INFO L231 Difference]: Finished difference. Result has 314 places, 247 transitions, 2425 flow [2024-06-04 14:09:38,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2425, PETRI_PLACES=314, PETRI_TRANSITIONS=247} [2024-06-04 14:09:38,184 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-04 14:09:38,184 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 247 transitions, 2425 flow [2024-06-04 14:09:38,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:38,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:38,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:38,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:09:38,184 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:38,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:38,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1096478709, now seen corresponding path program 19 times [2024-06-04 14:09:38,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:38,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703597289] [2024-06-04 14:09:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:38,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:39,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703597289] [2024-06-04 14:09:39,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703597289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:39,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:39,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:09:39,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293261153] [2024-06-04 14:09:39,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:39,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:09:39,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:39,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:09:39,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:09:39,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:39,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 247 transitions, 2425 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:39,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:39,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:39,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:40,146 INFO L124 PetriNetUnfolderBase]: 784/1409 cut-off events. [2024-06-04 14:09:40,146 INFO L125 PetriNetUnfolderBase]: For 125304/125307 co-relation queries the response was YES. [2024-06-04 14:09:40,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8320 conditions, 1409 events. 784/1409 cut-off events. For 125304/125307 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7588 event pairs, 117 based on Foata normal form. 2/1405 useless extension candidates. Maximal degree in co-relation 8160. Up to 998 conditions per place. [2024-06-04 14:09:40,162 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 196 selfloop transitions, 69 changer transitions 0/267 dead transitions. [2024-06-04 14:09:40,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 267 transitions, 3275 flow [2024-06-04 14:09:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:09:40,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:09:40,163 INFO L175 Difference]: Start difference. First operand has 314 places, 247 transitions, 2425 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:09:40,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 267 transitions, 3275 flow [2024-06-04 14:09:40,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 267 transitions, 3117 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:40,775 INFO L231 Difference]: Finished difference. Result has 316 places, 248 transitions, 2449 flow [2024-06-04 14:09:40,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2267, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2449, PETRI_PLACES=316, PETRI_TRANSITIONS=248} [2024-06-04 14:09:40,775 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-04 14:09:40,776 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 248 transitions, 2449 flow [2024-06-04 14:09:40,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:40,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:40,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:40,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:09:40,776 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:40,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:40,776 INFO L85 PathProgramCache]: Analyzing trace with hash -955987905, now seen corresponding path program 20 times [2024-06-04 14:09:40,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:40,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741034931] [2024-06-04 14:09:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:40,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:42,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741034931] [2024-06-04 14:09:42,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741034931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:42,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:42,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:42,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249247748] [2024-06-04 14:09:42,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:42,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:42,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:42,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:42,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:42,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 248 transitions, 2449 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:42,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:42,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:42,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:42,927 INFO L124 PetriNetUnfolderBase]: 781/1404 cut-off events. [2024-06-04 14:09:42,927 INFO L125 PetriNetUnfolderBase]: For 113012/113015 co-relation queries the response was YES. [2024-06-04 14:09:42,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8011 conditions, 1404 events. 781/1404 cut-off events. For 113012/113015 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7586 event pairs, 102 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 7850. Up to 1064 conditions per place. [2024-06-04 14:09:42,942 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 200 selfloop transitions, 65 changer transitions 0/267 dead transitions. [2024-06-04 14:09:42,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 267 transitions, 3027 flow [2024-06-04 14:09:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:09:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:09:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:09:42,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:09:42,942 INFO L175 Difference]: Start difference. First operand has 316 places, 248 transitions, 2449 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:09:42,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 267 transitions, 3027 flow [2024-06-04 14:09:43,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 267 transitions, 2831 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-04 14:09:43,483 INFO L231 Difference]: Finished difference. Result has 318 places, 248 transitions, 2387 flow [2024-06-04 14:09:43,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2253, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2387, PETRI_PLACES=318, PETRI_TRANSITIONS=248} [2024-06-04 14:09:43,484 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 286 predicate places. [2024-06-04 14:09:43,484 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 248 transitions, 2387 flow [2024-06-04 14:09:43,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:43,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:43,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:43,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:09:43,484 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:43,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:43,485 INFO L85 PathProgramCache]: Analyzing trace with hash -955803331, now seen corresponding path program 18 times [2024-06-04 14:09:43,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:43,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420989416] [2024-06-04 14:09:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:43,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:45,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:45,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420989416] [2024-06-04 14:09:45,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420989416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:45,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:45,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:45,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51798667] [2024-06-04 14:09:45,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:45,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:45,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:45,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 248 transitions, 2387 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:45,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:45,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:45,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:46,065 INFO L124 PetriNetUnfolderBase]: 777/1398 cut-off events. [2024-06-04 14:09:46,065 INFO L125 PetriNetUnfolderBase]: For 99512/99515 co-relation queries the response was YES. [2024-06-04 14:09:46,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7557 conditions, 1398 events. 777/1398 cut-off events. For 99512/99515 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7566 event pairs, 102 based on Foata normal form. 2/1394 useless extension candidates. Maximal degree in co-relation 7396. Up to 1074 conditions per place. [2024-06-04 14:09:46,080 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 202 selfloop transitions, 65 changer transitions 0/269 dead transitions. [2024-06-04 14:09:46,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 269 transitions, 2973 flow [2024-06-04 14:09:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:09:46,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-04 14:09:46,081 INFO L175 Difference]: Start difference. First operand has 318 places, 248 transitions, 2387 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:09:46,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 269 transitions, 2973 flow [2024-06-04 14:09:46,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 269 transitions, 2690 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-04 14:09:46,577 INFO L231 Difference]: Finished difference. Result has 318 places, 248 transitions, 2239 flow [2024-06-04 14:09:46,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2239, PETRI_PLACES=318, PETRI_TRANSITIONS=248} [2024-06-04 14:09:46,578 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 286 predicate places. [2024-06-04 14:09:46,578 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 248 transitions, 2239 flow [2024-06-04 14:09:46,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:46,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:46,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:46,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:09:46,579 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:46,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1530512098, now seen corresponding path program 1 times [2024-06-04 14:09:46,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:46,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232609407] [2024-06-04 14:09:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:46,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:48,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:48,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232609407] [2024-06-04 14:09:48,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232609407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:48,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:48,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:09:48,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104203250] [2024-06-04 14:09:48,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:48,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:09:48,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:48,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:09:48,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:09:48,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:48,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 248 transitions, 2239 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:09:48,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:48,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:48,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:48,736 INFO L124 PetriNetUnfolderBase]: 781/1405 cut-off events. [2024-06-04 14:09:48,737 INFO L125 PetriNetUnfolderBase]: For 99298/99298 co-relation queries the response was YES. [2024-06-04 14:09:48,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7365 conditions, 1405 events. 781/1405 cut-off events. For 99298/99298 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7632 event pairs, 149 based on Foata normal form. 2/1406 useless extension candidates. Maximal degree in co-relation 7204. Up to 1249 conditions per place. [2024-06-04 14:09:48,750 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 245 selfloop transitions, 24 changer transitions 0/271 dead transitions. [2024-06-04 14:09:48,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 271 transitions, 2863 flow [2024-06-04 14:09:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 14:09:48,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3085399449035813 [2024-06-04 14:09:48,751 INFO L175 Difference]: Start difference. First operand has 318 places, 248 transitions, 2239 flow. Second operand 11 states and 112 transitions. [2024-06-04 14:09:48,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 271 transitions, 2863 flow [2024-06-04 14:09:49,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 271 transitions, 2638 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-04 14:09:49,101 INFO L231 Difference]: Finished difference. Result has 319 places, 249 transitions, 2098 flow [2024-06-04 14:09:49,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2098, PETRI_PLACES=319, PETRI_TRANSITIONS=249} [2024-06-04 14:09:49,102 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:09:49,102 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 249 transitions, 2098 flow [2024-06-04 14:09:49,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:09:49,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:49,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:49,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:09:49,102 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:49,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash -929332042, now seen corresponding path program 2 times [2024-06-04 14:09:49,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:49,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561354888] [2024-06-04 14:09:49,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:49,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:50,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:50,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561354888] [2024-06-04 14:09:50,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561354888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:50,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:50,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:09:50,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446895879] [2024-06-04 14:09:50,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:50,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:09:50,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:50,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:09:50,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:09:50,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:50,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 249 transitions, 2098 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:09:50,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:50,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:50,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:51,468 INFO L124 PetriNetUnfolderBase]: 785/1413 cut-off events. [2024-06-04 14:09:51,468 INFO L125 PetriNetUnfolderBase]: For 100647/100647 co-relation queries the response was YES. [2024-06-04 14:09:51,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7155 conditions, 1413 events. 785/1413 cut-off events. For 100647/100647 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7711 event pairs, 172 based on Foata normal form. 2/1414 useless extension candidates. Maximal degree in co-relation 6994. Up to 1294 conditions per place. [2024-06-04 14:09:51,483 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 245 selfloop transitions, 25 changer transitions 0/272 dead transitions. [2024-06-04 14:09:51,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 272 transitions, 2726 flow [2024-06-04 14:09:51,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:09:51,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:09:51,485 INFO L175 Difference]: Start difference. First operand has 319 places, 249 transitions, 2098 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:09:51,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 272 transitions, 2726 flow [2024-06-04 14:09:51,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 272 transitions, 2652 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:51,858 INFO L231 Difference]: Finished difference. Result has 321 places, 250 transitions, 2112 flow [2024-06-04 14:09:51,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2112, PETRI_PLACES=321, PETRI_TRANSITIONS=250} [2024-06-04 14:09:51,859 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-04 14:09:51,859 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 250 transitions, 2112 flow [2024-06-04 14:09:51,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:09:51,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:51,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:51,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:09:51,859 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:51,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:51,859 INFO L85 PathProgramCache]: Analyzing trace with hash -929337622, now seen corresponding path program 3 times [2024-06-04 14:09:51,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:51,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984260005] [2024-06-04 14:09:51,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:51,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:53,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984260005] [2024-06-04 14:09:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984260005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:53,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:53,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:09:53,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963070233] [2024-06-04 14:09:53,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:53,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:09:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:53,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:09:53,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:09:53,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:53,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 250 transitions, 2112 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:53,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:53,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:53,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:53,972 INFO L124 PetriNetUnfolderBase]: 789/1421 cut-off events. [2024-06-04 14:09:53,972 INFO L125 PetriNetUnfolderBase]: For 104465/104465 co-relation queries the response was YES. [2024-06-04 14:09:53,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 1421 events. 789/1421 cut-off events. For 104465/104465 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7736 event pairs, 172 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 7040. Up to 1302 conditions per place. [2024-06-04 14:09:53,984 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 247 selfloop transitions, 24 changer transitions 0/273 dead transitions. [2024-06-04 14:09:53,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 273 transitions, 2744 flow [2024-06-04 14:09:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:53,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:09:53,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:09:53,985 INFO L175 Difference]: Start difference. First operand has 321 places, 250 transitions, 2112 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:09:53,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 273 transitions, 2744 flow [2024-06-04 14:09:54,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 273 transitions, 2666 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:54,364 INFO L231 Difference]: Finished difference. Result has 323 places, 251 transitions, 2122 flow [2024-06-04 14:09:54,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2122, PETRI_PLACES=323, PETRI_TRANSITIONS=251} [2024-06-04 14:09:54,364 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-04 14:09:54,364 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 251 transitions, 2122 flow [2024-06-04 14:09:54,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:09:54,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:54,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:54,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:09:54,365 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:54,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1636438190, now seen corresponding path program 4 times [2024-06-04 14:09:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:54,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683685755] [2024-06-04 14:09:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:54,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:55,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683685755] [2024-06-04 14:09:55,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683685755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:55,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:55,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:09:55,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230148954] [2024-06-04 14:09:55,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:55,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:09:55,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:55,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:09:55,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:09:55,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:55,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 251 transitions, 2122 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:09:55,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:55,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:55,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:56,416 INFO L124 PetriNetUnfolderBase]: 793/1429 cut-off events. [2024-06-04 14:09:56,416 INFO L125 PetriNetUnfolderBase]: For 106383/106383 co-relation queries the response was YES. [2024-06-04 14:09:56,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7249 conditions, 1429 events. 793/1429 cut-off events. For 106383/106383 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7805 event pairs, 170 based on Foata normal form. 2/1430 useless extension candidates. Maximal degree in co-relation 7086. Up to 1296 conditions per place. [2024-06-04 14:09:56,432 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 247 selfloop transitions, 25 changer transitions 0/274 dead transitions. [2024-06-04 14:09:56,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 274 transitions, 2758 flow [2024-06-04 14:09:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:09:56,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-04 14:09:56,433 INFO L175 Difference]: Start difference. First operand has 323 places, 251 transitions, 2122 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:09:56,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 274 transitions, 2758 flow [2024-06-04 14:09:56,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 274 transitions, 2680 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:56,830 INFO L231 Difference]: Finished difference. Result has 325 places, 252 transitions, 2136 flow [2024-06-04 14:09:56,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2136, PETRI_PLACES=325, PETRI_TRANSITIONS=252} [2024-06-04 14:09:56,831 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-04 14:09:56,831 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 252 transitions, 2136 flow [2024-06-04 14:09:56,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:09:56,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:56,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:56,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:09:56,831 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:56,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1632863270, now seen corresponding path program 5 times [2024-06-04 14:09:56,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:56,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423102885] [2024-06-04 14:09:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:56,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:09:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:09:58,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:09:58,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423102885] [2024-06-04 14:09:58,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423102885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:09:58,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:09:58,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:09:58,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269508154] [2024-06-04 14:09:58,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:09:58,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:09:58,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:09:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:09:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:09:58,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:09:58,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 252 transitions, 2136 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:09:58,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:09:58,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:09:58,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:09:59,169 INFO L124 PetriNetUnfolderBase]: 797/1437 cut-off events. [2024-06-04 14:09:59,169 INFO L125 PetriNetUnfolderBase]: For 108430/108430 co-relation queries the response was YES. [2024-06-04 14:09:59,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7304 conditions, 1437 events. 797/1437 cut-off events. For 108430/108430 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7885 event pairs, 166 based on Foata normal form. 2/1438 useless extension candidates. Maximal degree in co-relation 7140. Up to 1282 conditions per place. [2024-06-04 14:09:59,185 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 247 selfloop transitions, 26 changer transitions 0/275 dead transitions. [2024-06-04 14:09:59,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 275 transitions, 2776 flow [2024-06-04 14:09:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:09:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:09:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:09:59,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-04 14:09:59,187 INFO L175 Difference]: Start difference. First operand has 325 places, 252 transitions, 2136 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:09:59,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 275 transitions, 2776 flow [2024-06-04 14:09:59,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 275 transitions, 2694 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 14:09:59,595 INFO L231 Difference]: Finished difference. Result has 327 places, 253 transitions, 2150 flow [2024-06-04 14:09:59,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2150, PETRI_PLACES=327, PETRI_TRANSITIONS=253} [2024-06-04 14:09:59,596 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-04 14:09:59,596 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 253 transitions, 2150 flow [2024-06-04 14:09:59,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:09:59,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:09:59,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:09:59,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:09:59,596 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:09:59,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:09:59,597 INFO L85 PathProgramCache]: Analyzing trace with hash 921219020, now seen corresponding path program 1 times [2024-06-04 14:09:59,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:09:59,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637324581] [2024-06-04 14:09:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:09:59,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:09:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:01,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:01,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637324581] [2024-06-04 14:10:01,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637324581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:01,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:01,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:01,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800895940] [2024-06-04 14:10:01,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:01,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:01,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:01,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:01,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:01,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:01,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 253 transitions, 2150 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:01,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:01,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:01,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:01,743 INFO L124 PetriNetUnfolderBase]: 813/1473 cut-off events. [2024-06-04 14:10:01,743 INFO L125 PetriNetUnfolderBase]: For 169221/169221 co-relation queries the response was YES. [2024-06-04 14:10:01,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7447 conditions, 1473 events. 813/1473 cut-off events. For 169221/169221 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8088 event pairs, 186 based on Foata normal form. 10/1482 useless extension candidates. Maximal degree in co-relation 7282. Up to 1300 conditions per place. [2024-06-04 14:10:01,759 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 242 selfloop transitions, 21 changer transitions 16/281 dead transitions. [2024-06-04 14:10:01,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 281 transitions, 2830 flow [2024-06-04 14:10:01,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 14:10:01,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-04 14:10:01,760 INFO L175 Difference]: Start difference. First operand has 327 places, 253 transitions, 2150 flow. Second operand 12 states and 130 transitions. [2024-06-04 14:10:01,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 281 transitions, 2830 flow [2024-06-04 14:10:02,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 281 transitions, 2744 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:02,245 INFO L231 Difference]: Finished difference. Result has 330 places, 247 transitions, 2065 flow [2024-06-04 14:10:02,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2065, PETRI_PLACES=330, PETRI_TRANSITIONS=247} [2024-06-04 14:10:02,245 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 298 predicate places. [2024-06-04 14:10:02,245 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 247 transitions, 2065 flow [2024-06-04 14:10:02,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:02,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:02,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:02,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:10:02,246 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:02,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:02,246 INFO L85 PathProgramCache]: Analyzing trace with hash -418944436, now seen corresponding path program 6 times [2024-06-04 14:10:02,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:02,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347881457] [2024-06-04 14:10:02,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:02,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:03,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347881457] [2024-06-04 14:10:03,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347881457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:03,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:03,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:03,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129821179] [2024-06-04 14:10:03,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:03,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:03,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:03,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:03,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:04,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:04,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 247 transitions, 2065 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:04,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:04,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:04,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:04,596 INFO L124 PetriNetUnfolderBase]: 781/1412 cut-off events. [2024-06-04 14:10:04,596 INFO L125 PetriNetUnfolderBase]: For 111384/111384 co-relation queries the response was YES. [2024-06-04 14:10:04,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7151 conditions, 1412 events. 781/1412 cut-off events. For 111384/111384 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7700 event pairs, 158 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 6985. Up to 1211 conditions per place. [2024-06-04 14:10:04,612 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 228 selfloop transitions, 39 changer transitions 0/269 dead transitions. [2024-06-04 14:10:04,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 269 transitions, 2689 flow [2024-06-04 14:10:04,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:10:04,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:10:04,613 INFO L175 Difference]: Start difference. First operand has 330 places, 247 transitions, 2065 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:10:04,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 269 transitions, 2689 flow [2024-06-04 14:10:05,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 269 transitions, 2625 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-04 14:10:05,117 INFO L231 Difference]: Finished difference. Result has 323 places, 248 transitions, 2125 flow [2024-06-04 14:10:05,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2125, PETRI_PLACES=323, PETRI_TRANSITIONS=248} [2024-06-04 14:10:05,118 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-04 14:10:05,118 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 248 transitions, 2125 flow [2024-06-04 14:10:05,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:05,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:05,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:05,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:10:05,118 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:05,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:05,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1618094050, now seen corresponding path program 7 times [2024-06-04 14:10:05,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:05,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756747026] [2024-06-04 14:10:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:05,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:06,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:06,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756747026] [2024-06-04 14:10:06,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756747026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:06,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:06,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:06,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674552184] [2024-06-04 14:10:06,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:06,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:06,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:06,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:06,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:06,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 248 transitions, 2125 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:06,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:06,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:06,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:07,427 INFO L124 PetriNetUnfolderBase]: 785/1420 cut-off events. [2024-06-04 14:10:07,427 INFO L125 PetriNetUnfolderBase]: For 106856/106856 co-relation queries the response was YES. [2024-06-04 14:10:07,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7216 conditions, 1420 events. 785/1420 cut-off events. For 106856/106856 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7783 event pairs, 156 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 7053. Up to 1219 conditions per place. [2024-06-04 14:10:07,443 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 230 selfloop transitions, 38 changer transitions 0/270 dead transitions. [2024-06-04 14:10:07,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 270 transitions, 2749 flow [2024-06-04 14:10:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:07,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:10:07,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:10:07,444 INFO L175 Difference]: Start difference. First operand has 323 places, 248 transitions, 2125 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:10:07,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 270 transitions, 2749 flow [2024-06-04 14:10:07,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 270 transitions, 2639 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:07,948 INFO L231 Difference]: Finished difference. Result has 325 places, 249 transitions, 2135 flow [2024-06-04 14:10:07,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2135, PETRI_PLACES=325, PETRI_TRANSITIONS=249} [2024-06-04 14:10:07,948 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-04 14:10:07,948 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 249 transitions, 2135 flow [2024-06-04 14:10:07,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:07,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:07,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:07,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:10:07,949 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:07,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:07,949 INFO L85 PathProgramCache]: Analyzing trace with hash 439335448, now seen corresponding path program 8 times [2024-06-04 14:10:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:07,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913252038] [2024-06-04 14:10:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:09,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:09,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913252038] [2024-06-04 14:10:09,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913252038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:09,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:09,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018019526] [2024-06-04 14:10:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:09,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:09,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:09,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:09,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 249 transitions, 2135 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:09,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:09,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:09,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:10,437 INFO L124 PetriNetUnfolderBase]: 789/1428 cut-off events. [2024-06-04 14:10:10,438 INFO L125 PetriNetUnfolderBase]: For 108729/108729 co-relation queries the response was YES. [2024-06-04 14:10:10,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7263 conditions, 1428 events. 789/1428 cut-off events. For 108729/108729 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7835 event pairs, 156 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 7099. Up to 1227 conditions per place. [2024-06-04 14:10:10,453 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 230 selfloop transitions, 40 changer transitions 0/272 dead transitions. [2024-06-04 14:10:10,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 272 transitions, 2769 flow [2024-06-04 14:10:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:10:10,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:10:10,454 INFO L175 Difference]: Start difference. First operand has 325 places, 249 transitions, 2135 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:10:10,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 272 transitions, 2769 flow [2024-06-04 14:10:10,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 272 transitions, 2659 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:10,992 INFO L231 Difference]: Finished difference. Result has 327 places, 250 transitions, 2151 flow [2024-06-04 14:10:10,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2151, PETRI_PLACES=327, PETRI_TRANSITIONS=250} [2024-06-04 14:10:10,992 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-04 14:10:10,992 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 250 transitions, 2151 flow [2024-06-04 14:10:10,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:10,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:10,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:10,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 14:10:10,993 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:10,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:10,993 INFO L85 PathProgramCache]: Analyzing trace with hash -557622316, now seen corresponding path program 9 times [2024-06-04 14:10:10,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:10,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524455612] [2024-06-04 14:10:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:10,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:13,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:13,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:13,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524455612] [2024-06-04 14:10:13,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524455612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:13,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:13,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:13,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872316111] [2024-06-04 14:10:13,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:13,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:13,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:13,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:13,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:13,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:13,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 250 transitions, 2151 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:13,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:13,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:13,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:14,089 INFO L124 PetriNetUnfolderBase]: 793/1436 cut-off events. [2024-06-04 14:10:14,089 INFO L125 PetriNetUnfolderBase]: For 110570/110570 co-relation queries the response was YES. [2024-06-04 14:10:14,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7322 conditions, 1436 events. 793/1436 cut-off events. For 110570/110570 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7892 event pairs, 156 based on Foata normal form. 2/1437 useless extension candidates. Maximal degree in co-relation 7157. Up to 1221 conditions per place. [2024-06-04 14:10:14,101 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 231 selfloop transitions, 39 changer transitions 0/272 dead transitions. [2024-06-04 14:10:14,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 272 transitions, 2783 flow [2024-06-04 14:10:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:10:14,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:10:14,101 INFO L175 Difference]: Start difference. First operand has 327 places, 250 transitions, 2151 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:10:14,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 272 transitions, 2783 flow [2024-06-04 14:10:14,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 272 transitions, 2667 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:14,600 INFO L231 Difference]: Finished difference. Result has 329 places, 251 transitions, 2161 flow [2024-06-04 14:10:14,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2161, PETRI_PLACES=329, PETRI_TRANSITIONS=251} [2024-06-04 14:10:14,601 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-04 14:10:14,601 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 251 transitions, 2161 flow [2024-06-04 14:10:14,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:14,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:14,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:14,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 14:10:14,602 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:14,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:14,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1096427038, now seen corresponding path program 10 times [2024-06-04 14:10:14,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:14,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881450974] [2024-06-04 14:10:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:16,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:16,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881450974] [2024-06-04 14:10:16,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881450974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:16,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:16,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:16,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989817821] [2024-06-04 14:10:16,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:16,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:16,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:16,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:16,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:16,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:16,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 251 transitions, 2161 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:16,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:16,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:16,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:17,142 INFO L124 PetriNetUnfolderBase]: 797/1444 cut-off events. [2024-06-04 14:10:17,142 INFO L125 PetriNetUnfolderBase]: For 112701/112701 co-relation queries the response was YES. [2024-06-04 14:10:17,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7367 conditions, 1444 events. 797/1444 cut-off events. For 112701/112701 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7954 event pairs, 156 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 7201. Up to 1181 conditions per place. [2024-06-04 14:10:17,158 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 228 selfloop transitions, 43 changer transitions 0/273 dead transitions. [2024-06-04 14:10:17,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 273 transitions, 2797 flow [2024-06-04 14:10:17,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:17,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:10:17,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:10:17,159 INFO L175 Difference]: Start difference. First operand has 329 places, 251 transitions, 2161 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:10:17,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 273 transitions, 2797 flow [2024-06-04 14:10:17,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 273 transitions, 2681 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:17,704 INFO L231 Difference]: Finished difference. Result has 331 places, 252 transitions, 2181 flow [2024-06-04 14:10:17,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2181, PETRI_PLACES=331, PETRI_TRANSITIONS=252} [2024-06-04 14:10:17,704 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 299 predicate places. [2024-06-04 14:10:17,705 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 252 transitions, 2181 flow [2024-06-04 14:10:17,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:17,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:17,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:17,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 14:10:17,705 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:17,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash 324852810, now seen corresponding path program 11 times [2024-06-04 14:10:17,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:17,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811819069] [2024-06-04 14:10:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:17,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:19,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:19,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811819069] [2024-06-04 14:10:19,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811819069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:19,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:19,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:19,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176733807] [2024-06-04 14:10:19,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:19,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:19,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:19,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:19,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:19,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:19,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 252 transitions, 2181 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:19,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:19,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:19,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:20,089 INFO L124 PetriNetUnfolderBase]: 801/1452 cut-off events. [2024-06-04 14:10:20,090 INFO L125 PetriNetUnfolderBase]: For 114662/114662 co-relation queries the response was YES. [2024-06-04 14:10:20,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7434 conditions, 1452 events. 801/1452 cut-off events. For 114662/114662 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8001 event pairs, 166 based on Foata normal form. 2/1453 useless extension candidates. Maximal degree in co-relation 7267. Up to 1251 conditions per place. [2024-06-04 14:10:20,107 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 232 selfloop transitions, 42 changer transitions 0/276 dead transitions. [2024-06-04 14:10:20,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 276 transitions, 2833 flow [2024-06-04 14:10:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:10:20,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:10:20,107 INFO L175 Difference]: Start difference. First operand has 331 places, 252 transitions, 2181 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:10:20,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 276 transitions, 2833 flow [2024-06-04 14:10:20,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 276 transitions, 2707 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:20,649 INFO L231 Difference]: Finished difference. Result has 333 places, 253 transitions, 2191 flow [2024-06-04 14:10:20,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2191, PETRI_PLACES=333, PETRI_TRANSITIONS=253} [2024-06-04 14:10:20,649 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-04 14:10:20,649 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 253 transitions, 2191 flow [2024-06-04 14:10:20,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:20,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:20,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:20,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 14:10:20,650 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:20,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:20,650 INFO L85 PathProgramCache]: Analyzing trace with hash -621286016, now seen corresponding path program 12 times [2024-06-04 14:10:20,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:20,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387387586] [2024-06-04 14:10:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:20,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:22,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:22,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387387586] [2024-06-04 14:10:22,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387387586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:22,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:22,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:22,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521457033] [2024-06-04 14:10:22,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:22,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:22,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:22,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:22,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:22,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:22,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 253 transitions, 2191 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:22,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:22,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:22,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:23,207 INFO L124 PetriNetUnfolderBase]: 805/1460 cut-off events. [2024-06-04 14:10:23,208 INFO L125 PetriNetUnfolderBase]: For 116552/116552 co-relation queries the response was YES. [2024-06-04 14:10:23,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7483 conditions, 1460 events. 805/1460 cut-off events. For 116552/116552 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8082 event pairs, 168 based on Foata normal form. 2/1461 useless extension candidates. Maximal degree in co-relation 7315. Up to 1259 conditions per place. [2024-06-04 14:10:23,224 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 235 selfloop transitions, 39 changer transitions 0/276 dead transitions. [2024-06-04 14:10:23,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 276 transitions, 2841 flow [2024-06-04 14:10:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:23,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:10:23,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:10:23,226 INFO L175 Difference]: Start difference. First operand has 333 places, 253 transitions, 2191 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:10:23,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 276 transitions, 2841 flow [2024-06-04 14:10:23,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 276 transitions, 2715 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:23,824 INFO L231 Difference]: Finished difference. Result has 335 places, 254 transitions, 2197 flow [2024-06-04 14:10:23,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2065, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2197, PETRI_PLACES=335, PETRI_TRANSITIONS=254} [2024-06-04 14:10:23,825 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-04 14:10:23,825 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 254 transitions, 2197 flow [2024-06-04 14:10:23,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:23,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:23,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:23,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 14:10:23,825 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:23,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:23,825 INFO L85 PathProgramCache]: Analyzing trace with hash 439185718, now seen corresponding path program 13 times [2024-06-04 14:10:23,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:23,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099433150] [2024-06-04 14:10:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:23,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:25,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:25,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099433150] [2024-06-04 14:10:25,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099433150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:25,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:25,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:25,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403864360] [2024-06-04 14:10:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:25,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:25,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:25,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:25,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:25,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:25,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 254 transitions, 2197 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:25,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:25,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:25,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:26,372 INFO L124 PetriNetUnfolderBase]: 809/1468 cut-off events. [2024-06-04 14:10:26,372 INFO L125 PetriNetUnfolderBase]: For 118830/118830 co-relation queries the response was YES. [2024-06-04 14:10:26,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7520 conditions, 1468 events. 809/1468 cut-off events. For 118830/118830 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8145 event pairs, 160 based on Foata normal form. 2/1469 useless extension candidates. Maximal degree in co-relation 7351. Up to 1247 conditions per place. [2024-06-04 14:10:26,384 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 234 selfloop transitions, 41 changer transitions 0/277 dead transitions. [2024-06-04 14:10:26,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 277 transitions, 2851 flow [2024-06-04 14:10:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:26,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:26,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:10:26,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:10:26,385 INFO L175 Difference]: Start difference. First operand has 335 places, 254 transitions, 2197 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:10:26,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 277 transitions, 2851 flow [2024-06-04 14:10:26,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 277 transitions, 2729 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:26,954 INFO L231 Difference]: Finished difference. Result has 337 places, 255 transitions, 2213 flow [2024-06-04 14:10:26,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2213, PETRI_PLACES=337, PETRI_TRANSITIONS=255} [2024-06-04 14:10:26,955 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 305 predicate places. [2024-06-04 14:10:26,955 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 255 transitions, 2213 flow [2024-06-04 14:10:26,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:26,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:26,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:26,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 14:10:26,955 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:26,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:26,955 INFO L85 PathProgramCache]: Analyzing trace with hash -413372310, now seen corresponding path program 2 times [2024-06-04 14:10:26,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:26,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907828804] [2024-06-04 14:10:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:26,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:28,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:28,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907828804] [2024-06-04 14:10:28,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907828804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:28,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:28,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:28,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237936000] [2024-06-04 14:10:28,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:28,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:28,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:28,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:29,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:29,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 255 transitions, 2213 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:29,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:29,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:29,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:29,845 INFO L124 PetriNetUnfolderBase]: 825/1504 cut-off events. [2024-06-04 14:10:29,846 INFO L125 PetriNetUnfolderBase]: For 184277/184277 co-relation queries the response was YES. [2024-06-04 14:10:29,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 1504 events. 825/1504 cut-off events. For 184277/184277 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8372 event pairs, 172 based on Foata normal form. 10/1513 useless extension candidates. Maximal degree in co-relation 7461. Up to 1249 conditions per place. [2024-06-04 14:10:29,863 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 229 selfloop transitions, 35 changer transitions 16/282 dead transitions. [2024-06-04 14:10:29,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 282 transitions, 2883 flow [2024-06-04 14:10:29,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:29,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 14:10:29,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 14:10:29,864 INFO L175 Difference]: Start difference. First operand has 337 places, 255 transitions, 2213 flow. Second operand 12 states and 135 transitions. [2024-06-04 14:10:29,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 282 transitions, 2883 flow [2024-06-04 14:10:30,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 282 transitions, 2755 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:30,413 INFO L231 Difference]: Finished difference. Result has 340 places, 249 transitions, 2114 flow [2024-06-04 14:10:30,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2114, PETRI_PLACES=340, PETRI_TRANSITIONS=249} [2024-06-04 14:10:30,413 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 308 predicate places. [2024-06-04 14:10:30,413 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 249 transitions, 2114 flow [2024-06-04 14:10:30,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:30,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:30,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:30,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 14:10:30,414 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:30,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash 638631658, now seen corresponding path program 14 times [2024-06-04 14:10:30,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:30,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127571195] [2024-06-04 14:10:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:30,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:32,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:32,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127571195] [2024-06-04 14:10:32,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127571195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:32,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:32,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:32,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536081162] [2024-06-04 14:10:32,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:32,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:32,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:32,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:32,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:32,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:32,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 249 transitions, 2114 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:32,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:32,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:32,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:32,726 INFO L124 PetriNetUnfolderBase]: 793/1444 cut-off events. [2024-06-04 14:10:32,726 INFO L125 PetriNetUnfolderBase]: For 121502/121502 co-relation queries the response was YES. [2024-06-04 14:10:32,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7342 conditions, 1444 events. 793/1444 cut-off events. For 121502/121502 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7996 event pairs, 170 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 7171. Up to 1243 conditions per place. [2024-06-04 14:10:32,743 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 231 selfloop transitions, 40 changer transitions 0/273 dead transitions. [2024-06-04 14:10:32,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 273 transitions, 2766 flow [2024-06-04 14:10:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:10:32,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:10:32,744 INFO L175 Difference]: Start difference. First operand has 340 places, 249 transitions, 2114 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:10:32,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 273 transitions, 2766 flow [2024-06-04 14:10:33,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 273 transitions, 2674 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-04 14:10:33,337 INFO L231 Difference]: Finished difference. Result has 333 places, 250 transitions, 2160 flow [2024-06-04 14:10:33,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2160, PETRI_PLACES=333, PETRI_TRANSITIONS=250} [2024-06-04 14:10:33,338 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-04 14:10:33,338 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 250 transitions, 2160 flow [2024-06-04 14:10:33,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:33,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:33,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:33,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 14:10:33,339 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:33,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash -949856798, now seen corresponding path program 15 times [2024-06-04 14:10:33,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:33,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455614925] [2024-06-04 14:10:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:33,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:34,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455614925] [2024-06-04 14:10:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455614925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:34,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:34,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:34,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136658810] [2024-06-04 14:10:34,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:34,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:34,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:34,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:34,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:35,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:35,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 250 transitions, 2160 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:35,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:35,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:35,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:35,592 INFO L124 PetriNetUnfolderBase]: 797/1452 cut-off events. [2024-06-04 14:10:35,592 INFO L125 PetriNetUnfolderBase]: For 117202/117202 co-relation queries the response was YES. [2024-06-04 14:10:35,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7411 conditions, 1452 events. 797/1452 cut-off events. For 117202/117202 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8047 event pairs, 166 based on Foata normal form. 2/1453 useless extension candidates. Maximal degree in co-relation 7243. Up to 1224 conditions per place. [2024-06-04 14:10:35,608 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 226 selfloop transitions, 47 changer transitions 0/275 dead transitions. [2024-06-04 14:10:35,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 275 transitions, 2818 flow [2024-06-04 14:10:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:35,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:10:35,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:10:35,609 INFO L175 Difference]: Start difference. First operand has 333 places, 250 transitions, 2160 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:10:35,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 275 transitions, 2818 flow [2024-06-04 14:10:36,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 275 transitions, 2694 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:36,193 INFO L231 Difference]: Finished difference. Result has 335 places, 251 transitions, 2186 flow [2024-06-04 14:10:36,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2186, PETRI_PLACES=335, PETRI_TRANSITIONS=251} [2024-06-04 14:10:36,193 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-04 14:10:36,194 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 251 transitions, 2186 flow [2024-06-04 14:10:36,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:36,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:36,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:36,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 14:10:36,194 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:36,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:36,194 INFO L85 PathProgramCache]: Analyzing trace with hash 645996824, now seen corresponding path program 3 times [2024-06-04 14:10:36,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:36,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478942385] [2024-06-04 14:10:36,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:36,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:38,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478942385] [2024-06-04 14:10:38,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478942385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:38,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:38,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:38,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057018816] [2024-06-04 14:10:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:38,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:38,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:38,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:38,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:38,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:38,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 251 transitions, 2186 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:38,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:38,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:38,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:39,074 INFO L124 PetriNetUnfolderBase]: 813/1488 cut-off events. [2024-06-04 14:10:39,074 INFO L125 PetriNetUnfolderBase]: For 182162/182162 co-relation queries the response was YES. [2024-06-04 14:10:39,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 1488 events. 813/1488 cut-off events. For 182162/182162 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8271 event pairs, 170 based on Foata normal form. 10/1497 useless extension candidates. Maximal degree in co-relation 7353. Up to 1216 conditions per place. [2024-06-04 14:10:39,090 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 223 selfloop transitions, 45 changer transitions 11/281 dead transitions. [2024-06-04 14:10:39,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 281 transitions, 2860 flow [2024-06-04 14:10:39,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 14:10:39,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-04 14:10:39,091 INFO L175 Difference]: Start difference. First operand has 335 places, 251 transitions, 2186 flow. Second operand 12 states and 136 transitions. [2024-06-04 14:10:39,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 281 transitions, 2860 flow [2024-06-04 14:10:39,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 281 transitions, 2720 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:10:39,687 INFO L231 Difference]: Finished difference. Result has 338 places, 248 transitions, 2116 flow [2024-06-04 14:10:39,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2116, PETRI_PLACES=338, PETRI_TRANSITIONS=248} [2024-06-04 14:10:39,687 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 306 predicate places. [2024-06-04 14:10:39,687 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 248 transitions, 2116 flow [2024-06-04 14:10:39,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:39,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:39,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:39,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 14:10:39,688 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:39,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:39,688 INFO L85 PathProgramCache]: Analyzing trace with hash 646265594, now seen corresponding path program 4 times [2024-06-04 14:10:39,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:39,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166478769] [2024-06-04 14:10:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:39,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:41,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:41,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166478769] [2024-06-04 14:10:41,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166478769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:41,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:41,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:41,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499813324] [2024-06-04 14:10:41,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:41,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:41,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:41,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:41,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:41,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:41,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 248 transitions, 2116 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:41,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:41,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:41,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:42,487 INFO L124 PetriNetUnfolderBase]: 828/1525 cut-off events. [2024-06-04 14:10:42,487 INFO L125 PetriNetUnfolderBase]: For 248837/248837 co-relation queries the response was YES. [2024-06-04 14:10:42,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8865 conditions, 1525 events. 828/1525 cut-off events. For 248837/248837 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8509 event pairs, 179 based on Foata normal form. 8/1532 useless extension candidates. Maximal degree in co-relation 8695. Up to 1133 conditions per place. [2024-06-04 14:10:42,505 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 223 selfloop transitions, 49 changer transitions 10/284 dead transitions. [2024-06-04 14:10:42,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 284 transitions, 3100 flow [2024-06-04 14:10:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 14:10:42,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-04 14:10:42,506 INFO L175 Difference]: Start difference. First operand has 338 places, 248 transitions, 2116 flow. Second operand 12 states and 142 transitions. [2024-06-04 14:10:42,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 284 transitions, 3100 flow [2024-06-04 14:10:43,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 284 transitions, 2992 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-04 14:10:43,372 INFO L231 Difference]: Finished difference. Result has 336 places, 244 transitions, 2080 flow [2024-06-04 14:10:43,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2080, PETRI_PLACES=336, PETRI_TRANSITIONS=244} [2024-06-04 14:10:43,373 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 304 predicate places. [2024-06-04 14:10:43,373 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 244 transitions, 2080 flow [2024-06-04 14:10:43,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:43,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:43,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:43,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 14:10:43,373 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:43,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash -414359590, now seen corresponding path program 5 times [2024-06-04 14:10:43,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:43,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958756413] [2024-06-04 14:10:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:43,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:45,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:45,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958756413] [2024-06-04 14:10:45,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958756413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:45,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:45,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:45,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979576569] [2024-06-04 14:10:45,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:45,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:45,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:45,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:45,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:45,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:45,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 244 transitions, 2080 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:45,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:45,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:45,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:46,284 INFO L124 PetriNetUnfolderBase]: 814/1503 cut-off events. [2024-06-04 14:10:46,285 INFO L125 PetriNetUnfolderBase]: For 262094/262094 co-relation queries the response was YES. [2024-06-04 14:10:46,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8744 conditions, 1503 events. 814/1503 cut-off events. For 262094/262094 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8364 event pairs, 187 based on Foata normal form. 10/1512 useless extension candidates. Maximal degree in co-relation 8589. Up to 1204 conditions per place. [2024-06-04 14:10:46,302 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 213 selfloop transitions, 45 changer transitions 15/275 dead transitions. [2024-06-04 14:10:46,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 275 transitions, 2742 flow [2024-06-04 14:10:46,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 14:10:46,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:10:46,302 INFO L175 Difference]: Start difference. First operand has 336 places, 244 transitions, 2080 flow. Second operand 12 states and 138 transitions. [2024-06-04 14:10:46,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 275 transitions, 2742 flow [2024-06-04 14:10:47,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 275 transitions, 2646 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:10:47,059 INFO L231 Difference]: Finished difference. Result has 334 places, 238 transitions, 2016 flow [2024-06-04 14:10:47,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2016, PETRI_PLACES=334, PETRI_TRANSITIONS=238} [2024-06-04 14:10:47,059 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 302 predicate places. [2024-06-04 14:10:47,059 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 238 transitions, 2016 flow [2024-06-04 14:10:47,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:47,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:47,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:47,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 14:10:47,060 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:47,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash 638846984, now seen corresponding path program 6 times [2024-06-04 14:10:47,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:47,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737998466] [2024-06-04 14:10:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:47,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:48,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:48,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737998466] [2024-06-04 14:10:48,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737998466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:48,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:48,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:48,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550507500] [2024-06-04 14:10:48,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:48,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:48,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:48,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:48,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:48,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:48,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 238 transitions, 2016 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:48,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:48,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:48,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:49,623 INFO L124 PetriNetUnfolderBase]: 799/1478 cut-off events. [2024-06-04 14:10:49,623 INFO L125 PetriNetUnfolderBase]: For 257871/257871 co-relation queries the response was YES. [2024-06-04 14:10:49,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8597 conditions, 1478 events. 799/1478 cut-off events. For 257871/257871 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8191 event pairs, 191 based on Foata normal form. 10/1487 useless extension candidates. Maximal degree in co-relation 8443. Up to 1233 conditions per place. [2024-06-04 14:10:49,640 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 215 selfloop transitions, 39 changer transitions 11/267 dead transitions. [2024-06-04 14:10:49,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 267 transitions, 2654 flow [2024-06-04 14:10:49,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 14:10:49,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-06-04 14:10:49,641 INFO L175 Difference]: Start difference. First operand has 334 places, 238 transitions, 2016 flow. Second operand 12 states and 134 transitions. [2024-06-04 14:10:49,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 267 transitions, 2654 flow [2024-06-04 14:10:50,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 267 transitions, 2535 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:10:50,399 INFO L231 Difference]: Finished difference. Result has 329 places, 235 transitions, 1955 flow [2024-06-04 14:10:50,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1955, PETRI_PLACES=329, PETRI_TRANSITIONS=235} [2024-06-04 14:10:50,399 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-04 14:10:50,400 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 235 transitions, 1955 flow [2024-06-04 14:10:50,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:50,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:50,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:50,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 14:10:50,400 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:50,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:50,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1150938112, now seen corresponding path program 7 times [2024-06-04 14:10:50,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:50,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877476558] [2024-06-04 14:10:50,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:50,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:52,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:52,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877476558] [2024-06-04 14:10:52,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877476558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:52,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:52,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:52,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652234631] [2024-06-04 14:10:52,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:52,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:52,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:52,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:52,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:52,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:52,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 235 transitions, 1955 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:52,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:52,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:52,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:53,015 INFO L124 PetriNetUnfolderBase]: 760/1405 cut-off events. [2024-06-04 14:10:53,015 INFO L125 PetriNetUnfolderBase]: For 175688/175688 co-relation queries the response was YES. [2024-06-04 14:10:53,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 1405 events. 760/1405 cut-off events. For 175688/175688 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7779 event pairs, 170 based on Foata normal form. 10/1414 useless extension candidates. Maximal degree in co-relation 6792. Up to 1160 conditions per place. [2024-06-04 14:10:53,031 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 213 selfloop transitions, 37 changer transitions 11/263 dead transitions. [2024-06-04 14:10:53,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 263 transitions, 2581 flow [2024-06-04 14:10:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:10:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:10:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 14:10:53,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-06-04 14:10:53,032 INFO L175 Difference]: Start difference. First operand has 329 places, 235 transitions, 1955 flow. Second operand 12 states and 134 transitions. [2024-06-04 14:10:53,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 263 transitions, 2581 flow [2024-06-04 14:10:53,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 263 transitions, 2501 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:10:53,619 INFO L231 Difference]: Finished difference. Result has 328 places, 232 transitions, 1929 flow [2024-06-04 14:10:53,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1929, PETRI_PLACES=328, PETRI_TRANSITIONS=232} [2024-06-04 14:10:53,619 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2024-06-04 14:10:53,619 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 232 transitions, 1929 flow [2024-06-04 14:10:53,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:53,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:53,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:53,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 14:10:53,620 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:53,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:53,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1576086190, now seen corresponding path program 16 times [2024-06-04 14:10:53,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:53,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083039708] [2024-06-04 14:10:53,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:53,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:55,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:55,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083039708] [2024-06-04 14:10:55,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083039708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:55,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:55,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:10:55,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596849640] [2024-06-04 14:10:55,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:55,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:10:55,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:55,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:10:55,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:10:55,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:55,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 232 transitions, 1929 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:55,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:55,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:55,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:56,505 INFO L124 PetriNetUnfolderBase]: 754/1401 cut-off events. [2024-06-04 14:10:56,505 INFO L125 PetriNetUnfolderBase]: For 192907/192910 co-relation queries the response was YES. [2024-06-04 14:10:56,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6990 conditions, 1401 events. 754/1401 cut-off events. For 192907/192910 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7745 event pairs, 132 based on Foata normal form. 12/1407 useless extension candidates. Maximal degree in co-relation 6838. Up to 961 conditions per place. [2024-06-04 14:10:56,520 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 182 selfloop transitions, 70 changer transitions 7/261 dead transitions. [2024-06-04 14:10:56,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 261 transitions, 2607 flow [2024-06-04 14:10:56,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:56,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:10:56,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-04 14:10:56,521 INFO L175 Difference]: Start difference. First operand has 328 places, 232 transitions, 1929 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:10:56,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 261 transitions, 2607 flow [2024-06-04 14:10:57,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 261 transitions, 2529 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:10:57,094 INFO L231 Difference]: Finished difference. Result has 324 places, 230 transitions, 2025 flow [2024-06-04 14:10:57,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2025, PETRI_PLACES=324, PETRI_TRANSITIONS=230} [2024-06-04 14:10:57,094 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-04 14:10:57,094 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 230 transitions, 2025 flow [2024-06-04 14:10:57,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:10:57,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:10:57,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:10:57,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 14:10:57,095 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:10:57,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:10:57,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1576362896, now seen corresponding path program 8 times [2024-06-04 14:10:57,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:10:57,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409079432] [2024-06-04 14:10:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:10:57,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:10:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:10:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:10:58,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:10:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409079432] [2024-06-04 14:10:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409079432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:10:58,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:10:58,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:10:58,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963196] [2024-06-04 14:10:58,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:10:58,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:10:58,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:10:58,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:10:58,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:10:58,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:10:58,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 230 transitions, 2025 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:10:58,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:10:58,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:10:58,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:10:59,663 INFO L124 PetriNetUnfolderBase]: 778/1453 cut-off events. [2024-06-04 14:10:59,663 INFO L125 PetriNetUnfolderBase]: For 252485/252488 co-relation queries the response was YES. [2024-06-04 14:10:59,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8912 conditions, 1453 events. 778/1453 cut-off events. For 252485/252488 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8045 event pairs, 142 based on Foata normal form. 8/1455 useless extension candidates. Maximal degree in co-relation 8761. Up to 917 conditions per place. [2024-06-04 14:10:59,679 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 185 selfloop transitions, 68 changer transitions 9/264 dead transitions. [2024-06-04 14:10:59,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 264 transitions, 3001 flow [2024-06-04 14:10:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:10:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:10:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 14:10:59,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-04 14:10:59,680 INFO L175 Difference]: Start difference. First operand has 324 places, 230 transitions, 2025 flow. Second operand 11 states and 139 transitions. [2024-06-04 14:10:59,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 264 transitions, 3001 flow [2024-06-04 14:11:00,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 264 transitions, 2803 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-04 14:11:00,511 INFO L231 Difference]: Finished difference. Result has 325 places, 228 transitions, 2014 flow [2024-06-04 14:11:00,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2014, PETRI_PLACES=325, PETRI_TRANSITIONS=228} [2024-06-04 14:11:00,512 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-04 14:11:00,512 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 228 transitions, 2014 flow [2024-06-04 14:11:00,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:00,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:00,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:00,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 14:11:00,512 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:00,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash 801232710, now seen corresponding path program 9 times [2024-06-04 14:11:00,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:00,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643597124] [2024-06-04 14:11:00,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:00,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:02,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:02,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:02,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643597124] [2024-06-04 14:11:02,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643597124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:02,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:02,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:11:02,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719029005] [2024-06-04 14:11:02,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:02,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:11:02,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:02,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:11:02,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:11:02,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:02,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 228 transitions, 2014 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:02,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:02,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:02,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:03,380 INFO L124 PetriNetUnfolderBase]: 766/1433 cut-off events. [2024-06-04 14:11:03,381 INFO L125 PetriNetUnfolderBase]: For 271576/271579 co-relation queries the response was YES. [2024-06-04 14:11:03,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8775 conditions, 1433 events. 766/1433 cut-off events. For 271576/271579 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7923 event pairs, 146 based on Foata normal form. 10/1437 useless extension candidates. Maximal degree in co-relation 8623. Up to 1037 conditions per place. [2024-06-04 14:11:03,395 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 183 selfloop transitions, 62 changer transitions 11/258 dead transitions. [2024-06-04 14:11:03,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 258 transitions, 2638 flow [2024-06-04 14:11:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:11:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:11:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 14:11:03,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-04 14:11:03,395 INFO L175 Difference]: Start difference. First operand has 325 places, 228 transitions, 2014 flow. Second operand 12 states and 142 transitions. [2024-06-04 14:11:03,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 258 transitions, 2638 flow [2024-06-04 14:11:04,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 258 transitions, 2508 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:11:04,242 INFO L231 Difference]: Finished difference. Result has 323 places, 225 transitions, 1986 flow [2024-06-04 14:11:04,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1986, PETRI_PLACES=323, PETRI_TRANSITIONS=225} [2024-06-04 14:11:04,242 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-04 14:11:04,242 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 225 transitions, 1986 flow [2024-06-04 14:11:04,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:04,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:04,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:04,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 14:11:04,243 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:04,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:04,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2015877514, now seen corresponding path program 10 times [2024-06-04 14:11:04,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:04,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003509694] [2024-06-04 14:11:04,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:04,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:06,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003509694] [2024-06-04 14:11:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003509694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:06,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:11:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36371981] [2024-06-04 14:11:06,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:06,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:11:06,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:06,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:11:06,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:11:06,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:06,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 225 transitions, 1986 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:06,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:06,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:06,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:07,056 INFO L124 PetriNetUnfolderBase]: 787/1480 cut-off events. [2024-06-04 14:11:07,056 INFO L125 PetriNetUnfolderBase]: For 323227/323230 co-relation queries the response was YES. [2024-06-04 14:11:07,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10137 conditions, 1480 events. 787/1480 cut-off events. For 323227/323230 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 8246 event pairs, 139 based on Foata normal form. 8/1482 useless extension candidates. Maximal degree in co-relation 9987. Up to 995 conditions per place. [2024-06-04 14:11:07,073 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 177 selfloop transitions, 76 changer transitions 8/263 dead transitions. [2024-06-04 14:11:07,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 263 transitions, 2922 flow [2024-06-04 14:11:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:11:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:11:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 14:11:07,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-04 14:11:07,074 INFO L175 Difference]: Start difference. First operand has 323 places, 225 transitions, 1986 flow. Second operand 12 states and 146 transitions. [2024-06-04 14:11:07,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 263 transitions, 2922 flow [2024-06-04 14:11:08,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 263 transitions, 2790 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:11:08,090 INFO L231 Difference]: Finished difference. Result has 322 places, 225 transitions, 2022 flow [2024-06-04 14:11:08,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2022, PETRI_PLACES=322, PETRI_TRANSITIONS=225} [2024-06-04 14:11:08,090 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-04 14:11:08,090 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 225 transitions, 2022 flow [2024-06-04 14:11:08,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:08,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:08,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:08,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 14:11:08,090 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:08,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:08,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1212489802, now seen corresponding path program 11 times [2024-06-04 14:11:08,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:08,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610457733] [2024-06-04 14:11:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:08,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:09,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:09,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610457733] [2024-06-04 14:11:09,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610457733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:09,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:09,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:09,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620053922] [2024-06-04 14:11:09,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:09,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:09,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:09,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:09,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:09,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:09,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 225 transitions, 2022 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:09,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:09,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:09,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:10,486 INFO L124 PetriNetUnfolderBase]: 811/1532 cut-off events. [2024-06-04 14:11:10,486 INFO L125 PetriNetUnfolderBase]: For 409011/409014 co-relation queries the response was YES. [2024-06-04 14:11:10,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12011 conditions, 1532 events. 811/1532 cut-off events. For 409011/409014 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8618 event pairs, 149 based on Foata normal form. 8/1534 useless extension candidates. Maximal degree in co-relation 11861. Up to 817 conditions per place. [2024-06-04 14:11:10,504 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 141 selfloop transitions, 110 changer transitions 9/262 dead transitions. [2024-06-04 14:11:10,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 262 transitions, 3000 flow [2024-06-04 14:11:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:11:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:11:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 14:11:10,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:11:10,505 INFO L175 Difference]: Start difference. First operand has 322 places, 225 transitions, 2022 flow. Second operand 12 states and 150 transitions. [2024-06-04 14:11:10,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 262 transitions, 3000 flow [2024-06-04 14:11:11,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 262 transitions, 2855 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:11:11,726 INFO L231 Difference]: Finished difference. Result has 323 places, 223 transitions, 2148 flow [2024-06-04 14:11:11,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2148, PETRI_PLACES=323, PETRI_TRANSITIONS=223} [2024-06-04 14:11:11,727 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-04 14:11:11,727 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 223 transitions, 2148 flow [2024-06-04 14:11:11,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:11,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:11,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:11,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 14:11:11,731 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:11,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:11,731 INFO L85 PathProgramCache]: Analyzing trace with hash 793873124, now seen corresponding path program 17 times [2024-06-04 14:11:11,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:11,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070335387] [2024-06-04 14:11:11,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:11,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070335387] [2024-06-04 14:11:13,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070335387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:13,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:13,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:13,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934169400] [2024-06-04 14:11:13,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:13,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:13,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:13,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:13,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:13,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 223 transitions, 2148 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:13,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:13,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:13,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:14,290 INFO L124 PetriNetUnfolderBase]: 787/1488 cut-off events. [2024-06-04 14:11:14,290 INFO L125 PetriNetUnfolderBase]: For 360640/360643 co-relation queries the response was YES. [2024-06-04 14:11:14,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 1488 events. 787/1488 cut-off events. For 360640/360643 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8326 event pairs, 169 based on Foata normal form. 2/1484 useless extension candidates. Maximal degree in co-relation 11865. Up to 1166 conditions per place. [2024-06-04 14:11:14,308 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 187 selfloop transitions, 58 changer transitions 0/247 dead transitions. [2024-06-04 14:11:14,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 247 transitions, 2750 flow [2024-06-04 14:11:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 14:11:14,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-04 14:11:14,309 INFO L175 Difference]: Start difference. First operand has 323 places, 223 transitions, 2148 flow. Second operand 11 states and 128 transitions. [2024-06-04 14:11:14,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 247 transitions, 2750 flow [2024-06-04 14:11:15,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 247 transitions, 2530 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:11:15,420 INFO L231 Difference]: Finished difference. Result has 321 places, 224 transitions, 2104 flow [2024-06-04 14:11:15,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2104, PETRI_PLACES=321, PETRI_TRANSITIONS=224} [2024-06-04 14:11:15,421 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-04 14:11:15,421 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 224 transitions, 2104 flow [2024-06-04 14:11:15,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:15,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:15,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:15,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 14:11:15,421 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:15,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash 793867544, now seen corresponding path program 18 times [2024-06-04 14:11:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:15,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013549006] [2024-06-04 14:11:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:15,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:17,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013549006] [2024-06-04 14:11:17,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013549006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:17,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:17,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:17,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491992758] [2024-06-04 14:11:17,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:17,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:17,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:17,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:17,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:17,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 224 transitions, 2104 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:17,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:17,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:17,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:17,783 INFO L124 PetriNetUnfolderBase]: 791/1496 cut-off events. [2024-06-04 14:11:17,783 INFO L125 PetriNetUnfolderBase]: For 356314/356317 co-relation queries the response was YES. [2024-06-04 14:11:17,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11960 conditions, 1496 events. 791/1496 cut-off events. For 356314/356317 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8415 event pairs, 177 based on Foata normal form. 2/1492 useless extension candidates. Maximal degree in co-relation 11811. Up to 1174 conditions per place. [2024-06-04 14:11:17,800 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 189 selfloop transitions, 57 changer transitions 0/248 dead transitions. [2024-06-04 14:11:17,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 248 transitions, 2712 flow [2024-06-04 14:11:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:11:17,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:11:17,801 INFO L175 Difference]: Start difference. First operand has 321 places, 224 transitions, 2104 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:11:17,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 248 transitions, 2712 flow [2024-06-04 14:11:18,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 248 transitions, 2548 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:18,977 INFO L231 Difference]: Finished difference. Result has 323 places, 225 transitions, 2118 flow [2024-06-04 14:11:18,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2118, PETRI_PLACES=323, PETRI_TRANSITIONS=225} [2024-06-04 14:11:18,978 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 291 predicate places. [2024-06-04 14:11:18,978 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 225 transitions, 2118 flow [2024-06-04 14:11:18,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:18,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:18,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:18,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 14:11:18,978 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:18,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:18,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2015868214, now seen corresponding path program 12 times [2024-06-04 14:11:18,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:18,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297590013] [2024-06-04 14:11:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:18,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:20,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:20,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297590013] [2024-06-04 14:11:20,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297590013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:20,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:20,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:11:20,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844065619] [2024-06-04 14:11:20,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:20,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:11:20,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:20,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:11:20,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:11:20,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:20,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 225 transitions, 2118 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:20,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:20,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:20,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:21,126 INFO L124 PetriNetUnfolderBase]: 823/1568 cut-off events. [2024-06-04 14:11:21,126 INFO L125 PetriNetUnfolderBase]: For 492534/492537 co-relation queries the response was YES. [2024-06-04 14:11:21,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12213 conditions, 1568 events. 823/1568 cut-off events. For 492534/492537 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8970 event pairs, 163 based on Foata normal form. 20/1582 useless extension candidates. Maximal degree in co-relation 12063. Up to 953 conditions per place. [2024-06-04 14:11:21,146 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 130 selfloop transitions, 106 changer transitions 15/253 dead transitions. [2024-06-04 14:11:21,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 253 transitions, 2728 flow [2024-06-04 14:11:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:21,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:11:21,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-04 14:11:21,147 INFO L175 Difference]: Start difference. First operand has 323 places, 225 transitions, 2118 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:11:21,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 253 transitions, 2728 flow [2024-06-04 14:11:22,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 253 transitions, 2560 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:22,386 INFO L231 Difference]: Finished difference. Result has 325 places, 218 transitions, 2108 flow [2024-06-04 14:11:22,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2108, PETRI_PLACES=325, PETRI_TRANSITIONS=218} [2024-06-04 14:11:22,386 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 293 predicate places. [2024-06-04 14:11:22,386 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 218 transitions, 2108 flow [2024-06-04 14:11:22,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:22,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:22,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 14:11:22,386 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:22,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:22,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2015600808, now seen corresponding path program 19 times [2024-06-04 14:11:22,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:22,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884326838] [2024-06-04 14:11:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:22,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:24,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:24,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884326838] [2024-06-04 14:11:24,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884326838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:24,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:24,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:11:24,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45282495] [2024-06-04 14:11:24,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:24,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:11:24,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:24,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:11:24,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:11:24,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:24,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 218 transitions, 2108 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:24,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:24,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:24,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:24,930 INFO L124 PetriNetUnfolderBase]: 775/1472 cut-off events. [2024-06-04 14:11:24,930 INFO L125 PetriNetUnfolderBase]: For 366828/366831 co-relation queries the response was YES. [2024-06-04 14:11:24,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11996 conditions, 1472 events. 775/1472 cut-off events. For 366828/366831 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8266 event pairs, 165 based on Foata normal form. 2/1468 useless extension candidates. Maximal degree in co-relation 11845. Up to 1136 conditions per place. [2024-06-04 14:11:24,944 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 170 selfloop transitions, 71 changer transitions 0/243 dead transitions. [2024-06-04 14:11:24,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 243 transitions, 2712 flow [2024-06-04 14:11:24,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 14:11:24,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-04 14:11:24,944 INFO L175 Difference]: Start difference. First operand has 325 places, 218 transitions, 2108 flow. Second operand 11 states and 128 transitions. [2024-06-04 14:11:24,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 243 transitions, 2712 flow [2024-06-04 14:11:26,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 243 transitions, 2482 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 14:11:26,105 INFO L231 Difference]: Finished difference. Result has 319 places, 219 transitions, 2086 flow [2024-06-04 14:11:26,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2086, PETRI_PLACES=319, PETRI_TRANSITIONS=219} [2024-06-04 14:11:26,106 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:11:26,106 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 219 transitions, 2086 flow [2024-06-04 14:11:26,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:26,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:26,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:26,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 14:11:26,106 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:26,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash 794082870, now seen corresponding path program 13 times [2024-06-04 14:11:26,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:26,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991738806] [2024-06-04 14:11:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:26,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:28,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991738806] [2024-06-04 14:11:28,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991738806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:28,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:28,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:11:28,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371404211] [2024-06-04 14:11:28,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:28,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:11:28,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:28,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:11:28,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:11:28,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:28,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 219 transitions, 2086 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:28,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:28,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:28,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:29,665 INFO L124 PetriNetUnfolderBase]: 791/1508 cut-off events. [2024-06-04 14:11:29,665 INFO L125 PetriNetUnfolderBase]: For 412700/412703 co-relation queries the response was YES. [2024-06-04 14:11:29,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11939 conditions, 1508 events. 791/1508 cut-off events. For 412700/412703 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8524 event pairs, 179 based on Foata normal form. 10/1512 useless extension candidates. Maximal degree in co-relation 11791. Up to 1136 conditions per place. [2024-06-04 14:11:29,683 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 180 selfloop transitions, 57 changer transitions 9/248 dead transitions. [2024-06-04 14:11:29,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 248 transitions, 2686 flow [2024-06-04 14:11:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:11:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:11:29,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:11:29,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-04 14:11:29,684 INFO L175 Difference]: Start difference. First operand has 319 places, 219 transitions, 2086 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:11:29,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 248 transitions, 2686 flow [2024-06-04 14:11:30,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 248 transitions, 2488 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:30,738 INFO L231 Difference]: Finished difference. Result has 322 places, 216 transitions, 1982 flow [2024-06-04 14:11:30,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1982, PETRI_PLACES=322, PETRI_TRANSITIONS=216} [2024-06-04 14:11:30,739 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-04 14:11:30,739 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 216 transitions, 1982 flow [2024-06-04 14:11:30,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:30,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:30,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:30,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 14:11:30,739 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:30,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:30,739 INFO L85 PathProgramCache]: Analyzing trace with hash 594571334, now seen corresponding path program 20 times [2024-06-04 14:11:30,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:30,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753479564] [2024-06-04 14:11:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:30,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:32,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:32,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753479564] [2024-06-04 14:11:32,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753479564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:32,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:32,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:32,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547366406] [2024-06-04 14:11:32,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:32,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:32,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:32,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:32,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:32,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:32,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 216 transitions, 1982 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:32,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:32,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:32,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:33,461 INFO L124 PetriNetUnfolderBase]: 769/1466 cut-off events. [2024-06-04 14:11:33,461 INFO L125 PetriNetUnfolderBase]: For 360970/360973 co-relation queries the response was YES. [2024-06-04 14:11:33,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11740 conditions, 1466 events. 769/1466 cut-off events. For 360970/360973 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8269 event pairs, 179 based on Foata normal form. 2/1462 useless extension candidates. Maximal degree in co-relation 11591. Up to 1144 conditions per place. [2024-06-04 14:11:33,478 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 180 selfloop transitions, 57 changer transitions 0/239 dead transitions. [2024-06-04 14:11:33,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 239 transitions, 2566 flow [2024-06-04 14:11:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 14:11:33,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-04 14:11:33,479 INFO L175 Difference]: Start difference. First operand has 322 places, 216 transitions, 1982 flow. Second operand 11 states and 128 transitions. [2024-06-04 14:11:33,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 239 transitions, 2566 flow [2024-06-04 14:11:34,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 239 transitions, 2446 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:11:34,611 INFO L231 Difference]: Finished difference. Result has 319 places, 217 transitions, 2038 flow [2024-06-04 14:11:34,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2038, PETRI_PLACES=319, PETRI_TRANSITIONS=217} [2024-06-04 14:11:34,611 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:11:34,612 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 217 transitions, 2038 flow [2024-06-04 14:11:34,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:34,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:34,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:34,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 14:11:34,612 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:34,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:34,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2015608744, now seen corresponding path program 14 times [2024-06-04 14:11:34,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:34,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436356605] [2024-06-04 14:11:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:34,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:36,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:36,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436356605] [2024-06-04 14:11:36,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436356605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:36,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:36,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:11:36,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970142356] [2024-06-04 14:11:36,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:36,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:11:36,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:36,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:11:36,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:11:36,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:36,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 217 transitions, 2038 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:36,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:36,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:36,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:37,341 INFO L124 PetriNetUnfolderBase]: 785/1502 cut-off events. [2024-06-04 14:11:37,341 INFO L125 PetriNetUnfolderBase]: For 412721/412724 co-relation queries the response was YES. [2024-06-04 14:11:37,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11845 conditions, 1502 events. 785/1502 cut-off events. For 412721/412724 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8550 event pairs, 161 based on Foata normal form. 10/1506 useless extension candidates. Maximal degree in co-relation 11697. Up to 1122 conditions per place. [2024-06-04 14:11:37,359 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 165 selfloop transitions, 69 changer transitions 11/247 dead transitions. [2024-06-04 14:11:37,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 247 transitions, 2640 flow [2024-06-04 14:11:37,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:11:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:11:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 14:11:37,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:11:37,360 INFO L175 Difference]: Start difference. First operand has 319 places, 217 transitions, 2038 flow. Second operand 12 states and 140 transitions. [2024-06-04 14:11:37,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 247 transitions, 2640 flow [2024-06-04 14:11:38,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 247 transitions, 2476 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:38,597 INFO L231 Difference]: Finished difference. Result has 322 places, 214 transitions, 1992 flow [2024-06-04 14:11:38,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1992, PETRI_PLACES=322, PETRI_TRANSITIONS=214} [2024-06-04 14:11:38,598 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-04 14:11:38,598 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 214 transitions, 1992 flow [2024-06-04 14:11:38,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:38,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:38,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:38,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 14:11:38,598 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:38,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:38,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1212499102, now seen corresponding path program 15 times [2024-06-04 14:11:38,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:38,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361968558] [2024-06-04 14:11:38,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:38,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:40,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:40,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:40,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361968558] [2024-06-04 14:11:40,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361968558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:40,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:40,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:40,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522841893] [2024-06-04 14:11:40,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:40,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:40,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:40,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:40,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:40,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:40,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 214 transitions, 1992 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:40,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:40,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:40,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:41,005 INFO L124 PetriNetUnfolderBase]: 772/1483 cut-off events. [2024-06-04 14:11:41,005 INFO L125 PetriNetUnfolderBase]: For 417752/417755 co-relation queries the response was YES. [2024-06-04 14:11:41,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11466 conditions, 1483 events. 772/1483 cut-off events. For 417752/417755 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8423 event pairs, 152 based on Foata normal form. 12/1489 useless extension candidates. Maximal degree in co-relation 11317. Up to 888 conditions per place. [2024-06-04 14:11:41,019 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 132 selfloop transitions, 97 changer transitions 15/246 dead transitions. [2024-06-04 14:11:41,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 246 transitions, 2598 flow [2024-06-04 14:11:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:11:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:11:41,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-04 14:11:41,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35664335664335667 [2024-06-04 14:11:41,020 INFO L175 Difference]: Start difference. First operand has 322 places, 214 transitions, 1992 flow. Second operand 13 states and 153 transitions. [2024-06-04 14:11:41,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 246 transitions, 2598 flow [2024-06-04 14:11:42,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 246 transitions, 2456 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:11:42,259 INFO L231 Difference]: Finished difference. Result has 321 places, 206 transitions, 1983 flow [2024-06-04 14:11:42,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1983, PETRI_PLACES=321, PETRI_TRANSITIONS=206} [2024-06-04 14:11:42,260 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-04 14:11:42,260 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 206 transitions, 1983 flow [2024-06-04 14:11:42,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:42,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:42,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:42,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 14:11:42,260 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:42,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash 594565754, now seen corresponding path program 21 times [2024-06-04 14:11:42,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:42,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414546723] [2024-06-04 14:11:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:42,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:44,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:44,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414546723] [2024-06-04 14:11:44,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414546723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:44,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:44,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:44,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676141618] [2024-06-04 14:11:44,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:44,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:44,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:44,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:44,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:44,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:44,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 206 transitions, 1983 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:44,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:44,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:44,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:45,452 INFO L124 PetriNetUnfolderBase]: 738/1417 cut-off events. [2024-06-04 14:11:45,452 INFO L125 PetriNetUnfolderBase]: For 340722/340725 co-relation queries the response was YES. [2024-06-04 14:11:45,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11331 conditions, 1417 events. 738/1417 cut-off events. For 340722/340725 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7939 event pairs, 170 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 11183. Up to 1073 conditions per place. [2024-06-04 14:11:45,467 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 171 selfloop transitions, 60 changer transitions 0/233 dead transitions. [2024-06-04 14:11:45,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 233 transitions, 2569 flow [2024-06-04 14:11:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:11:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:11:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-04 14:11:45,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337995337995338 [2024-06-04 14:11:45,468 INFO L175 Difference]: Start difference. First operand has 321 places, 206 transitions, 1983 flow. Second operand 13 states and 145 transitions. [2024-06-04 14:11:45,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 233 transitions, 2569 flow [2024-06-04 14:11:46,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 233 transitions, 2309 flow, removed 27 selfloop flow, removed 17 redundant places. [2024-06-04 14:11:46,701 INFO L231 Difference]: Finished difference. Result has 314 places, 207 transitions, 1911 flow [2024-06-04 14:11:46,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1911, PETRI_PLACES=314, PETRI_TRANSITIONS=207} [2024-06-04 14:11:46,701 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-04 14:11:46,702 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 207 transitions, 1911 flow [2024-06-04 14:11:46,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:46,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:46,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:46,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 14:11:46,702 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:46,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:46,702 INFO L85 PathProgramCache]: Analyzing trace with hash 594421604, now seen corresponding path program 22 times [2024-06-04 14:11:46,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:46,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461906204] [2024-06-04 14:11:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:46,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:48,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:48,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461906204] [2024-06-04 14:11:48,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461906204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:48,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:48,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:48,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733344201] [2024-06-04 14:11:48,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:48,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:48,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:48,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:48,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:48,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 207 transitions, 1911 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:48,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:48,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:48,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:49,173 INFO L124 PetriNetUnfolderBase]: 742/1425 cut-off events. [2024-06-04 14:11:49,173 INFO L125 PetriNetUnfolderBase]: For 336092/336095 co-relation queries the response was YES. [2024-06-04 14:11:49,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11208 conditions, 1425 events. 742/1425 cut-off events. For 336092/336095 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8028 event pairs, 166 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 11063. Up to 1083 conditions per place. [2024-06-04 14:11:49,190 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 170 selfloop transitions, 58 changer transitions 0/230 dead transitions. [2024-06-04 14:11:49,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 230 transitions, 2485 flow [2024-06-04 14:11:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:49,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:11:49,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:11:49,191 INFO L175 Difference]: Start difference. First operand has 314 places, 207 transitions, 1911 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:11:49,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 230 transitions, 2485 flow [2024-06-04 14:11:50,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 230 transitions, 2307 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-04 14:11:50,285 INFO L231 Difference]: Finished difference. Result has 314 places, 208 transitions, 1919 flow [2024-06-04 14:11:50,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1919, PETRI_PLACES=314, PETRI_TRANSITIONS=208} [2024-06-04 14:11:50,285 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-04 14:11:50,285 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 208 transitions, 1919 flow [2024-06-04 14:11:50,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:50,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:50,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:50,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 14:11:50,286 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:50,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1511856722, now seen corresponding path program 23 times [2024-06-04 14:11:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:50,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268366242] [2024-06-04 14:11:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:50,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:52,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:52,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268366242] [2024-06-04 14:11:52,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268366242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:52,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:52,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:11:52,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646068234] [2024-06-04 14:11:52,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:52,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:11:52,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:52,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:11:52,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:11:52,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:52,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 208 transitions, 1919 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:52,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:52,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:52,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:52,736 INFO L124 PetriNetUnfolderBase]: 746/1433 cut-off events. [2024-06-04 14:11:52,736 INFO L125 PetriNetUnfolderBase]: For 341831/341834 co-relation queries the response was YES. [2024-06-04 14:11:52,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11287 conditions, 1433 events. 746/1433 cut-off events. For 341831/341834 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8069 event pairs, 160 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 11141. Up to 1111 conditions per place. [2024-06-04 14:11:52,753 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 160 selfloop transitions, 69 changer transitions 0/231 dead transitions. [2024-06-04 14:11:52,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 231 transitions, 2499 flow [2024-06-04 14:11:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:11:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:11:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:11:52,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:11:52,754 INFO L175 Difference]: Start difference. First operand has 314 places, 208 transitions, 1919 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:11:52,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 231 transitions, 2499 flow [2024-06-04 14:11:53,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 231 transitions, 2323 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:53,791 INFO L231 Difference]: Finished difference. Result has 316 places, 209 transitions, 1953 flow [2024-06-04 14:11:53,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1953, PETRI_PLACES=316, PETRI_TRANSITIONS=209} [2024-06-04 14:11:53,792 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-04 14:11:53,792 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 209 transitions, 1953 flow [2024-06-04 14:11:53,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:11:53,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:53,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:53,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 14:11:53,792 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:53,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:53,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1375004876, now seen corresponding path program 16 times [2024-06-04 14:11:53,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:53,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109024852] [2024-06-04 14:11:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:53,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:55,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109024852] [2024-06-04 14:11:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109024852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:55,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:55,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:55,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788374071] [2024-06-04 14:11:55,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:55,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:55,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:55,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:56,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:56,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 209 transitions, 1953 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:56,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:56,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:56,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:11:56,737 INFO L124 PetriNetUnfolderBase]: 762/1469 cut-off events. [2024-06-04 14:11:56,737 INFO L125 PetriNetUnfolderBase]: For 403982/403985 co-relation queries the response was YES. [2024-06-04 14:11:56,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11410 conditions, 1469 events. 762/1469 cut-off events. For 403982/403985 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8333 event pairs, 178 based on Foata normal form. 10/1473 useless extension candidates. Maximal degree in co-relation 11263. Up to 1103 conditions per place. [2024-06-04 14:11:56,753 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 169 selfloop transitions, 55 changer transitions 11/237 dead transitions. [2024-06-04 14:11:56,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 237 transitions, 2527 flow [2024-06-04 14:11:56,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:11:56,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:11:56,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 14:11:56,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:11:56,754 INFO L175 Difference]: Start difference. First operand has 316 places, 209 transitions, 1953 flow. Second operand 12 states and 140 transitions. [2024-06-04 14:11:56,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 237 transitions, 2527 flow [2024-06-04 14:11:57,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 237 transitions, 2327 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-04 14:11:57,759 INFO L231 Difference]: Finished difference. Result has 319 places, 206 transitions, 1841 flow [2024-06-04 14:11:57,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1841, PETRI_PLACES=319, PETRI_TRANSITIONS=206} [2024-06-04 14:11:57,760 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:11:57,760 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 206 transitions, 1841 flow [2024-06-04 14:11:57,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:57,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:11:57,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:11:57,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 14:11:57,760 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:11:57,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:11:57,760 INFO L85 PathProgramCache]: Analyzing trace with hash 372624716, now seen corresponding path program 24 times [2024-06-04 14:11:57,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:11:57,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398675001] [2024-06-04 14:11:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:11:57,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:11:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:11:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:11:59,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:11:59,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398675001] [2024-06-04 14:11:59,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398675001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:11:59,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:11:59,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:11:59,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79164189] [2024-06-04 14:11:59,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:11:59,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:11:59,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:11:59,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:11:59,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:11:59,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:11:59,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 206 transitions, 1841 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:11:59,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:11:59,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:11:59,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:00,327 INFO L124 PetriNetUnfolderBase]: 733/1414 cut-off events. [2024-06-04 14:12:00,327 INFO L125 PetriNetUnfolderBase]: For 334010/334013 co-relation queries the response was YES. [2024-06-04 14:12:00,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10753 conditions, 1414 events. 733/1414 cut-off events. For 334010/334013 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7986 event pairs, 179 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 10605. Up to 1092 conditions per place. [2024-06-04 14:12:00,340 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 164 selfloop transitions, 60 changer transitions 0/226 dead transitions. [2024-06-04 14:12:00,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 226 transitions, 2337 flow [2024-06-04 14:12:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:12:00,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:12:00,341 INFO L175 Difference]: Start difference. First operand has 319 places, 206 transitions, 1841 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:12:00,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 226 transitions, 2337 flow [2024-06-04 14:12:01,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 226 transitions, 2223 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:12:01,337 INFO L231 Difference]: Finished difference. Result has 316 places, 206 transitions, 1851 flow [2024-06-04 14:12:01,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=316, PETRI_TRANSITIONS=206} [2024-06-04 14:12:01,338 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-04 14:12:01,338 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 206 transitions, 1851 flow [2024-06-04 14:12:01,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:01,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:01,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:01,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 14:12:01,338 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:01,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:01,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2008243578, now seen corresponding path program 25 times [2024-06-04 14:12:01,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:01,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766385637] [2024-06-04 14:12:01,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:01,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:03,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:03,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766385637] [2024-06-04 14:12:03,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766385637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:03,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:03,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:12:03,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578321709] [2024-06-04 14:12:03,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:03,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:12:03,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:12:03,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:12:03,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:03,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 206 transitions, 1851 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:03,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:03,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:03,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:03,970 INFO L124 PetriNetUnfolderBase]: 737/1422 cut-off events. [2024-06-04 14:12:03,970 INFO L125 PetriNetUnfolderBase]: For 330724/330727 co-relation queries the response was YES. [2024-06-04 14:12:03,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10874 conditions, 1422 events. 737/1422 cut-off events. For 330724/330727 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8026 event pairs, 159 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 10727. Up to 1100 conditions per place. [2024-06-04 14:12:03,987 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 159 selfloop transitions, 68 changer transitions 0/229 dead transitions. [2024-06-04 14:12:03,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 229 transitions, 2429 flow [2024-06-04 14:12:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:12:03,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:12:03,988 INFO L175 Difference]: Start difference. First operand has 316 places, 206 transitions, 1851 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:12:03,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 229 transitions, 2429 flow [2024-06-04 14:12:05,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 229 transitions, 2247 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-04 14:12:05,015 INFO L231 Difference]: Finished difference. Result has 317 places, 207 transitions, 1879 flow [2024-06-04 14:12:05,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1879, PETRI_PLACES=317, PETRI_TRANSITIONS=207} [2024-06-04 14:12:05,015 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-04 14:12:05,015 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 207 transitions, 1879 flow [2024-06-04 14:12:05,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:05,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:05,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:05,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 14:12:05,016 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:05,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash 372619136, now seen corresponding path program 26 times [2024-06-04 14:12:05,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:05,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930314874] [2024-06-04 14:12:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:05,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:06,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:06,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930314874] [2024-06-04 14:12:06,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930314874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:06,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:06,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:12:06,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687040346] [2024-06-04 14:12:06,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:06,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:12:06,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:06,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:12:06,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:12:07,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:07,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 207 transitions, 1879 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:07,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:07,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:07,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:07,690 INFO L124 PetriNetUnfolderBase]: 741/1430 cut-off events. [2024-06-04 14:12:07,690 INFO L125 PetriNetUnfolderBase]: For 336728/336731 co-relation queries the response was YES. [2024-06-04 14:12:07,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10999 conditions, 1430 events. 741/1430 cut-off events. For 336728/336731 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8062 event pairs, 177 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 10851. Up to 1108 conditions per place. [2024-06-04 14:12:07,707 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 167 selfloop transitions, 59 changer transitions 0/228 dead transitions. [2024-06-04 14:12:07,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 228 transitions, 2449 flow [2024-06-04 14:12:07,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:07,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:12:07,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:12:07,708 INFO L175 Difference]: Start difference. First operand has 317 places, 207 transitions, 1879 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:12:07,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 228 transitions, 2449 flow [2024-06-04 14:12:08,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 228 transitions, 2249 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:08,884 INFO L231 Difference]: Finished difference. Result has 319 places, 208 transitions, 1873 flow [2024-06-04 14:12:08,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1873, PETRI_PLACES=319, PETRI_TRANSITIONS=208} [2024-06-04 14:12:08,884 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:12:08,884 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 208 transitions, 1873 flow [2024-06-04 14:12:08,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:08,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:08,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:08,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 14:12:08,884 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:08,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash -402386430, now seen corresponding path program 27 times [2024-06-04 14:12:08,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:08,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464205070] [2024-06-04 14:12:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:08,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:10,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:10,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464205070] [2024-06-04 14:12:10,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464205070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:10,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:10,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:10,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799291657] [2024-06-04 14:12:10,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:10,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:10,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:10,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:10,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:10,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:10,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 208 transitions, 1873 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:10,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:10,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:10,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:11,428 INFO L124 PetriNetUnfolderBase]: 745/1438 cut-off events. [2024-06-04 14:12:11,428 INFO L125 PetriNetUnfolderBase]: For 342834/342837 co-relation queries the response was YES. [2024-06-04 14:12:11,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11038 conditions, 1438 events. 745/1438 cut-off events. For 342834/342837 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8178 event pairs, 187 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 10889. Up to 903 conditions per place. [2024-06-04 14:12:11,445 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 142 selfloop transitions, 85 changer transitions 0/229 dead transitions. [2024-06-04 14:12:11,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 229 transitions, 2447 flow [2024-06-04 14:12:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:11,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:12:11,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:12:11,446 INFO L175 Difference]: Start difference. First operand has 319 places, 208 transitions, 1873 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:12:11,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 229 transitions, 2447 flow [2024-06-04 14:12:12,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 229 transitions, 2263 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:12,507 INFO L231 Difference]: Finished difference. Result has 321 places, 209 transitions, 1937 flow [2024-06-04 14:12:12,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1937, PETRI_PLACES=321, PETRI_TRANSITIONS=209} [2024-06-04 14:12:12,508 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-04 14:12:12,508 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 209 transitions, 1937 flow [2024-06-04 14:12:12,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:12,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:12,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:12,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 14:12:12,508 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:12,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:12,508 INFO L85 PathProgramCache]: Analyzing trace with hash -258136424, now seen corresponding path program 17 times [2024-06-04 14:12:12,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:12,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040121532] [2024-06-04 14:12:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:12,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:14,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:14,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040121532] [2024-06-04 14:12:14,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040121532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:14,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:14,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854536787] [2024-06-04 14:12:14,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:14,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:14,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:14,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:14,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:14,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 209 transitions, 1937 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:14,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:14,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:14,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:15,001 INFO L124 PetriNetUnfolderBase]: 740/1435 cut-off events. [2024-06-04 14:12:15,001 INFO L125 PetriNetUnfolderBase]: For 376940/376943 co-relation queries the response was YES. [2024-06-04 14:12:15,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 1435 events. 740/1435 cut-off events. For 376940/376943 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8152 event pairs, 178 based on Foata normal form. 16/1445 useless extension candidates. Maximal degree in co-relation 9599. Up to 1039 conditions per place. [2024-06-04 14:12:15,018 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 161 selfloop transitions, 56 changer transitions 16/235 dead transitions. [2024-06-04 14:12:15,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 235 transitions, 2501 flow [2024-06-04 14:12:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 14:12:15,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34595959595959597 [2024-06-04 14:12:15,019 INFO L175 Difference]: Start difference. First operand has 321 places, 209 transitions, 1937 flow. Second operand 12 states and 137 transitions. [2024-06-04 14:12:15,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 235 transitions, 2501 flow [2024-06-04 14:12:16,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 235 transitions, 2263 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:16,061 INFO L231 Difference]: Finished difference. Result has 324 places, 203 transitions, 1771 flow [2024-06-04 14:12:16,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1771, PETRI_PLACES=324, PETRI_TRANSITIONS=203} [2024-06-04 14:12:16,062 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-04 14:12:16,062 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 203 transitions, 1771 flow [2024-06-04 14:12:16,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:16,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:16,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:16,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 14:12:16,062 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:16,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash -405961350, now seen corresponding path program 28 times [2024-06-04 14:12:16,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:16,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059137145] [2024-06-04 14:12:16,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:16,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:17,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:17,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059137145] [2024-06-04 14:12:17,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059137145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:17,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:17,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:12:17,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981940632] [2024-06-04 14:12:17,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:17,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:12:17,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:17,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:12:17,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:12:17,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:17,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 203 transitions, 1771 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:17,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:17,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:17,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:18,525 INFO L124 PetriNetUnfolderBase]: 700/1355 cut-off events. [2024-06-04 14:12:18,525 INFO L125 PetriNetUnfolderBase]: For 273632/273635 co-relation queries the response was YES. [2024-06-04 14:12:18,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9402 conditions, 1355 events. 700/1355 cut-off events. For 273632/273635 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7653 event pairs, 158 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 9251. Up to 939 conditions per place. [2024-06-04 14:12:18,540 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 155 selfloop transitions, 67 changer transitions 0/224 dead transitions. [2024-06-04 14:12:18,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 224 transitions, 2337 flow [2024-06-04 14:12:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:18,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:12:18,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:12:18,541 INFO L175 Difference]: Start difference. First operand has 324 places, 203 transitions, 1771 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:12:18,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 224 transitions, 2337 flow [2024-06-04 14:12:19,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 224 transitions, 2203 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 14:12:19,429 INFO L231 Difference]: Finished difference. Result has 317 places, 204 transitions, 1851 flow [2024-06-04 14:12:19,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=317, PETRI_TRANSITIONS=204} [2024-06-04 14:12:19,429 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-04 14:12:19,429 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 204 transitions, 1851 flow [2024-06-04 14:12:19,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:19,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:19,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:19,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 14:12:19,429 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:19,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:19,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1474932888, now seen corresponding path program 18 times [2024-06-04 14:12:19,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:19,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998103159] [2024-06-04 14:12:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:19,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:21,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:21,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998103159] [2024-06-04 14:12:21,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998103159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:21,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:21,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:12:21,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326934634] [2024-06-04 14:12:21,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:21,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:12:21,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:21,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:12:21,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:12:21,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:21,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 204 transitions, 1851 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:21,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:21,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:21,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:21,772 INFO L124 PetriNetUnfolderBase]: 741/1442 cut-off events. [2024-06-04 14:12:21,772 INFO L125 PetriNetUnfolderBase]: For 386008/386011 co-relation queries the response was YES. [2024-06-04 14:12:21,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10952 conditions, 1442 events. 741/1442 cut-off events. For 386008/386011 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8229 event pairs, 153 based on Foata normal form. 8/1444 useless extension candidates. Maximal degree in co-relation 10803. Up to 775 conditions per place. [2024-06-04 14:12:21,789 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 135 selfloop transitions, 90 changer transitions 10/237 dead transitions. [2024-06-04 14:12:21,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 237 transitions, 2717 flow [2024-06-04 14:12:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:12:21,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-04 14:12:21,789 INFO L175 Difference]: Start difference. First operand has 317 places, 204 transitions, 1851 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:12:21,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 237 transitions, 2717 flow [2024-06-04 14:12:22,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 237 transitions, 2513 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:22,854 INFO L231 Difference]: Finished difference. Result has 319 places, 201 transitions, 1810 flow [2024-06-04 14:12:22,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1810, PETRI_PLACES=319, PETRI_TRANSITIONS=201} [2024-06-04 14:12:22,854 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 14:12:22,854 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 201 transitions, 1810 flow [2024-06-04 14:12:22,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:22,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:22,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:22,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 14:12:22,855 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:22,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2008458904, now seen corresponding path program 19 times [2024-06-04 14:12:22,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:22,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105593244] [2024-06-04 14:12:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:22,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:24,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:24,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105593244] [2024-06-04 14:12:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105593244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:24,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:24,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:12:24,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724413244] [2024-06-04 14:12:24,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:24,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:12:24,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:24,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:12:24,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:12:24,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:24,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 201 transitions, 1810 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:24,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:24,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:24,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:25,287 INFO L124 PetriNetUnfolderBase]: 700/1363 cut-off events. [2024-06-04 14:12:25,287 INFO L125 PetriNetUnfolderBase]: For 328354/328357 co-relation queries the response was YES. [2024-06-04 14:12:25,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9381 conditions, 1363 events. 700/1363 cut-off events. For 328354/328357 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7689 event pairs, 162 based on Foata normal form. 10/1367 useless extension candidates. Maximal degree in co-relation 9231. Up to 991 conditions per place. [2024-06-04 14:12:25,303 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 151 selfloop transitions, 67 changer transitions 7/227 dead transitions. [2024-06-04 14:12:25,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 227 transitions, 2362 flow [2024-06-04 14:12:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:12:25,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-04 14:12:25,304 INFO L175 Difference]: Start difference. First operand has 319 places, 201 transitions, 1810 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:12:25,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 227 transitions, 2362 flow [2024-06-04 14:12:26,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 227 transitions, 2176 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 14:12:26,214 INFO L231 Difference]: Finished difference. Result has 315 places, 198 transitions, 1743 flow [2024-06-04 14:12:26,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1743, PETRI_PLACES=315, PETRI_TRANSITIONS=198} [2024-06-04 14:12:26,214 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-04 14:12:26,215 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 198 transitions, 1743 flow [2024-06-04 14:12:26,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:26,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:26,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:26,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 14:12:26,215 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:26,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:26,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1474656182, now seen corresponding path program 29 times [2024-06-04 14:12:26,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:26,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753824366] [2024-06-04 14:12:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:26,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:28,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:28,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753824366] [2024-06-04 14:12:28,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753824366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:28,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:28,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:12:28,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455557147] [2024-06-04 14:12:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:28,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:12:28,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:12:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:12:28,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:28,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 198 transitions, 1743 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:28,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:28,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:28,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:28,856 INFO L124 PetriNetUnfolderBase]: 649/1262 cut-off events. [2024-06-04 14:12:28,856 INFO L125 PetriNetUnfolderBase]: For 186975/186978 co-relation queries the response was YES. [2024-06-04 14:12:28,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7753 conditions, 1262 events. 649/1262 cut-off events. For 186975/186978 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7040 event pairs, 141 based on Foata normal form. 2/1258 useless extension candidates. Maximal degree in co-relation 7605. Up to 894 conditions per place. [2024-06-04 14:12:28,870 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 153 selfloop transitions, 68 changer transitions 0/223 dead transitions. [2024-06-04 14:12:28,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 223 transitions, 2323 flow [2024-06-04 14:12:28,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:12:28,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-04 14:12:28,871 INFO L175 Difference]: Start difference. First operand has 315 places, 198 transitions, 1743 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:12:28,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 223 transitions, 2323 flow [2024-06-04 14:12:29,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 223 transitions, 2183 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:12:29,556 INFO L231 Difference]: Finished difference. Result has 312 places, 199 transitions, 1821 flow [2024-06-04 14:12:29,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1821, PETRI_PLACES=312, PETRI_TRANSITIONS=199} [2024-06-04 14:12:29,556 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 280 predicate places. [2024-06-04 14:12:29,556 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 199 transitions, 1821 flow [2024-06-04 14:12:29,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:29,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:29,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:29,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 14:12:29,557 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:29,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:29,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1212758572, now seen corresponding path program 20 times [2024-06-04 14:12:29,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:29,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376951901] [2024-06-04 14:12:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:29,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:31,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:31,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376951901] [2024-06-04 14:12:31,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376951901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:31,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:31,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:12:31,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730805643] [2024-06-04 14:12:31,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:31,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:12:31,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:12:31,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:12:31,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:31,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 199 transitions, 1821 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:31,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:31,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:31,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:32,440 INFO L124 PetriNetUnfolderBase]: 636/1237 cut-off events. [2024-06-04 14:12:32,440 INFO L125 PetriNetUnfolderBase]: For 169321/169321 co-relation queries the response was YES. [2024-06-04 14:12:32,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6426 conditions, 1237 events. 636/1237 cut-off events. For 169321/169321 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6941 event pairs, 174 based on Foata normal form. 10/1246 useless extension candidates. Maximal degree in co-relation 6279. Up to 1142 conditions per place. [2024-06-04 14:12:32,454 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 193 selfloop transitions, 15 changer transitions 9/219 dead transitions. [2024-06-04 14:12:32,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 219 transitions, 2339 flow [2024-06-04 14:12:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:12:32,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-04 14:12:32,455 INFO L175 Difference]: Start difference. First operand has 312 places, 199 transitions, 1821 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:12:32,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 219 transitions, 2339 flow [2024-06-04 14:12:32,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 219 transitions, 2131 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:32,903 INFO L231 Difference]: Finished difference. Result has 315 places, 196 transitions, 1629 flow [2024-06-04 14:12:32,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1629, PETRI_PLACES=315, PETRI_TRANSITIONS=196} [2024-06-04 14:12:32,903 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-04 14:12:32,903 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 196 transitions, 1629 flow [2024-06-04 14:12:32,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:32,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:32,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:32,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 14:12:32,903 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:32,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:32,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2052801348, now seen corresponding path program 30 times [2024-06-04 14:12:32,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:32,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6691777] [2024-06-04 14:12:32,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:32,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:34,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:34,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6691777] [2024-06-04 14:12:34,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6691777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:34,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:34,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:12:34,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013188767] [2024-06-04 14:12:34,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:34,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:12:34,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:34,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:12:34,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:12:34,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:34,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 196 transitions, 1629 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:34,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:34,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:34,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:35,287 INFO L124 PetriNetUnfolderBase]: 614/1197 cut-off events. [2024-06-04 14:12:35,287 INFO L125 PetriNetUnfolderBase]: For 112400/112403 co-relation queries the response was YES. [2024-06-04 14:12:35,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6113 conditions, 1197 events. 614/1197 cut-off events. For 112400/112403 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6698 event pairs, 124 based on Foata normal form. 2/1193 useless extension candidates. Maximal degree in co-relation 5965. Up to 875 conditions per place. [2024-06-04 14:12:35,301 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 158 selfloop transitions, 60 changer transitions 0/220 dead transitions. [2024-06-04 14:12:35,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 220 transitions, 2201 flow [2024-06-04 14:12:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:12:35,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:12:35,302 INFO L175 Difference]: Start difference. First operand has 315 places, 196 transitions, 1629 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:12:35,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 220 transitions, 2201 flow [2024-06-04 14:12:35,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 220 transitions, 2165 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:12:35,783 INFO L231 Difference]: Finished difference. Result has 312 places, 197 transitions, 1797 flow [2024-06-04 14:12:35,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1797, PETRI_PLACES=312, PETRI_TRANSITIONS=197} [2024-06-04 14:12:35,783 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 280 predicate places. [2024-06-04 14:12:35,783 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 197 transitions, 1797 flow [2024-06-04 14:12:35,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:35,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:35,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:35,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-04 14:12:35,784 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:35,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:35,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1963845692, now seen corresponding path program 21 times [2024-06-04 14:12:35,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:35,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681701281] [2024-06-04 14:12:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:35,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:37,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:37,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681701281] [2024-06-04 14:12:37,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681701281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:37,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:37,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:12:37,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360766753] [2024-06-04 14:12:37,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:37,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:12:37,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:37,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:12:37,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:12:37,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:37,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 197 transitions, 1797 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:37,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:37,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:37,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:37,883 INFO L124 PetriNetUnfolderBase]: 641/1258 cut-off events. [2024-06-04 14:12:37,883 INFO L125 PetriNetUnfolderBase]: For 197601/197604 co-relation queries the response was YES. [2024-06-04 14:12:37,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7182 conditions, 1258 events. 641/1258 cut-off events. For 197601/197604 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7044 event pairs, 119 based on Foata normal form. 8/1260 useless extension candidates. Maximal degree in co-relation 7035. Up to 660 conditions per place. [2024-06-04 14:12:37,894 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 130 selfloop transitions, 84 changer transitions 12/228 dead transitions. [2024-06-04 14:12:37,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 228 transitions, 2605 flow [2024-06-04 14:12:37,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 14:12:37,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34595959595959597 [2024-06-04 14:12:37,905 INFO L175 Difference]: Start difference. First operand has 312 places, 197 transitions, 1797 flow. Second operand 12 states and 137 transitions. [2024-06-04 14:12:37,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 228 transitions, 2605 flow [2024-06-04 14:12:38,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 228 transitions, 2411 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:38,373 INFO L231 Difference]: Finished difference. Result has 315 places, 193 transitions, 1748 flow [2024-06-04 14:12:38,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1748, PETRI_PLACES=315, PETRI_TRANSITIONS=193} [2024-06-04 14:12:38,373 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-04 14:12:38,373 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 193 transitions, 1748 flow [2024-06-04 14:12:38,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:38,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:38,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:38,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-04 14:12:38,373 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:38,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2045441762, now seen corresponding path program 22 times [2024-06-04 14:12:38,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:38,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908094757] [2024-06-04 14:12:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:38,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:40,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:40,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908094757] [2024-06-04 14:12:40,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908094757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:40,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:40,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:40,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404404753] [2024-06-04 14:12:40,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:40,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:40,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:40,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:40,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:40,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:40,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 193 transitions, 1748 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:40,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:40,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:40,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:41,232 INFO L124 PetriNetUnfolderBase]: 630/1237 cut-off events. [2024-06-04 14:12:41,233 INFO L125 PetriNetUnfolderBase]: For 212980/212983 co-relation queries the response was YES. [2024-06-04 14:12:41,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7069 conditions, 1237 events. 630/1237 cut-off events. For 212980/212983 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6898 event pairs, 127 based on Foata normal form. 10/1241 useless extension candidates. Maximal degree in co-relation 6921. Up to 849 conditions per place. [2024-06-04 14:12:41,247 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 148 selfloop transitions, 62 changer transitions 11/223 dead transitions. [2024-06-04 14:12:41,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 223 transitions, 2302 flow [2024-06-04 14:12:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:12:41,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-04 14:12:41,248 INFO L175 Difference]: Start difference. First operand has 315 places, 193 transitions, 1748 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:12:41,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 223 transitions, 2302 flow [2024-06-04 14:12:41,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 223 transitions, 2099 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-04 14:12:41,801 INFO L231 Difference]: Finished difference. Result has 309 places, 190 transitions, 1658 flow [2024-06-04 14:12:41,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1658, PETRI_PLACES=309, PETRI_TRANSITIONS=190} [2024-06-04 14:12:41,801 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-04 14:12:41,802 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 190 transitions, 1658 flow [2024-06-04 14:12:41,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:41,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:41,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:41,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-04 14:12:41,802 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:41,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:41,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1467514278, now seen corresponding path program 23 times [2024-06-04 14:12:41,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:41,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661902063] [2024-06-04 14:12:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:41,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:43,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:43,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661902063] [2024-06-04 14:12:43,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661902063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:43,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:43,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:12:43,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649677880] [2024-06-04 14:12:43,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:43,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:12:43,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:43,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:12:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:12:43,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:43,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 190 transitions, 1658 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:43,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:43,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:43,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:44,493 INFO L124 PetriNetUnfolderBase]: 620/1223 cut-off events. [2024-06-04 14:12:44,493 INFO L125 PetriNetUnfolderBase]: For 202966/202969 co-relation queries the response was YES. [2024-06-04 14:12:44,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6813 conditions, 1223 events. 620/1223 cut-off events. For 202966/202969 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6825 event pairs, 127 based on Foata normal form. 10/1227 useless extension candidates. Maximal degree in co-relation 6669. Up to 857 conditions per place. [2024-06-04 14:12:44,507 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 148 selfloop transitions, 58 changer transitions 11/219 dead transitions. [2024-06-04 14:12:44,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 219 transitions, 2194 flow [2024-06-04 14:12:44,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:44,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 14:12:44,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-04 14:12:44,508 INFO L175 Difference]: Start difference. First operand has 309 places, 190 transitions, 1658 flow. Second operand 12 states and 139 transitions. [2024-06-04 14:12:44,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 219 transitions, 2194 flow [2024-06-04 14:12:45,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 219 transitions, 2066 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:12:45,087 INFO L231 Difference]: Finished difference. Result has 307 places, 187 transitions, 1629 flow [2024-06-04 14:12:45,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1629, PETRI_PLACES=307, PETRI_TRANSITIONS=187} [2024-06-04 14:12:45,088 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 275 predicate places. [2024-06-04 14:12:45,088 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 187 transitions, 1629 flow [2024-06-04 14:12:45,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:45,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:45,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:45,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-04 14:12:45,088 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:45,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:45,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2052806928, now seen corresponding path program 31 times [2024-06-04 14:12:45,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:45,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445871794] [2024-06-04 14:12:45,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:45,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:46,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:46,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445871794] [2024-06-04 14:12:46,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445871794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:46,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:46,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:46,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832668577] [2024-06-04 14:12:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:46,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:46,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:46,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:46,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:46,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:46,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 187 transitions, 1629 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:46,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:46,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:46,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:47,524 INFO L124 PetriNetUnfolderBase]: 598/1181 cut-off events. [2024-06-04 14:12:47,524 INFO L125 PetriNetUnfolderBase]: For 147252/147255 co-relation queries the response was YES. [2024-06-04 14:12:47,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6760 conditions, 1181 events. 598/1181 cut-off events. For 147252/147255 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6570 event pairs, 121 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 6617. Up to 859 conditions per place. [2024-06-04 14:12:47,535 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 150 selfloop transitions, 59 changer transitions 0/211 dead transitions. [2024-06-04 14:12:47,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 211 transitions, 2185 flow [2024-06-04 14:12:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:12:47,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-04 14:12:47,536 INFO L175 Difference]: Start difference. First operand has 307 places, 187 transitions, 1629 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:12:47,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 211 transitions, 2185 flow [2024-06-04 14:12:48,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 211 transitions, 2065 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:12:48,045 INFO L231 Difference]: Finished difference. Result has 304 places, 188 transitions, 1713 flow [2024-06-04 14:12:48,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1713, PETRI_PLACES=304, PETRI_TRANSITIONS=188} [2024-06-04 14:12:48,045 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 272 predicate places. [2024-06-04 14:12:48,045 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 188 transitions, 1713 flow [2024-06-04 14:12:48,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:48,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:48,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:48,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-04 14:12:48,046 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:48,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:48,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2042864158, now seen corresponding path program 32 times [2024-06-04 14:12:48,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:48,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735018785] [2024-06-04 14:12:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:48,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:49,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:49,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735018785] [2024-06-04 14:12:49,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735018785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:49,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:49,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:12:49,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089003565] [2024-06-04 14:12:49,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:49,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:12:49,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:49,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:12:49,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:12:49,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:49,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 188 transitions, 1713 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:49,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:49,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:49,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:50,478 INFO L124 PetriNetUnfolderBase]: 602/1189 cut-off events. [2024-06-04 14:12:50,479 INFO L125 PetriNetUnfolderBase]: For 148182/148185 co-relation queries the response was YES. [2024-06-04 14:12:50,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6933 conditions, 1189 events. 602/1189 cut-off events. For 148182/148185 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6614 event pairs, 127 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 6791. Up to 867 conditions per place. [2024-06-04 14:12:50,490 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 147 selfloop transitions, 61 changer transitions 0/210 dead transitions. [2024-06-04 14:12:50,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 210 transitions, 2263 flow [2024-06-04 14:12:50,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:50,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:12:50,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:12:50,491 INFO L175 Difference]: Start difference. First operand has 304 places, 188 transitions, 1713 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:12:50,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 210 transitions, 2263 flow [2024-06-04 14:12:51,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 210 transitions, 2069 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:51,034 INFO L231 Difference]: Finished difference. Result has 306 places, 189 transitions, 1729 flow [2024-06-04 14:12:51,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1729, PETRI_PLACES=306, PETRI_TRANSITIONS=189} [2024-06-04 14:12:51,035 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 274 predicate places. [2024-06-04 14:12:51,035 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 189 transitions, 1729 flow [2024-06-04 14:12:51,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:51,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:51,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:51,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-04 14:12:51,035 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:51,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:51,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2042858578, now seen corresponding path program 33 times [2024-06-04 14:12:51,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:51,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528189385] [2024-06-04 14:12:51,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:51,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:52,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:52,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528189385] [2024-06-04 14:12:52,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528189385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:52,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:52,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:52,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791477962] [2024-06-04 14:12:52,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:52,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:52,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:52,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:52,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:52,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 189 transitions, 1729 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:52,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:52,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:52,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:53,432 INFO L124 PetriNetUnfolderBase]: 606/1197 cut-off events. [2024-06-04 14:12:53,432 INFO L125 PetriNetUnfolderBase]: For 150997/151000 co-relation queries the response was YES. [2024-06-04 14:12:53,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6992 conditions, 1197 events. 606/1197 cut-off events. For 150997/151000 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6704 event pairs, 137 based on Foata normal form. 2/1193 useless extension candidates. Maximal degree in co-relation 6849. Up to 735 conditions per place. [2024-06-04 14:12:53,442 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 140 selfloop transitions, 68 changer transitions 0/210 dead transitions. [2024-06-04 14:12:53,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 210 transitions, 2277 flow [2024-06-04 14:12:53,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:53,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:12:53,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:12:53,442 INFO L175 Difference]: Start difference. First operand has 306 places, 189 transitions, 1729 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:12:53,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 210 transitions, 2277 flow [2024-06-04 14:12:53,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 210 transitions, 2077 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:53,923 INFO L231 Difference]: Finished difference. Result has 308 places, 190 transitions, 1755 flow [2024-06-04 14:12:53,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1755, PETRI_PLACES=308, PETRI_TRANSITIONS=190} [2024-06-04 14:12:53,923 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 276 predicate places. [2024-06-04 14:12:53,923 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 190 transitions, 1755 flow [2024-06-04 14:12:53,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:53,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:53,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:53,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-04 14:12:53,924 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:53,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:53,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2048436284, now seen corresponding path program 24 times [2024-06-04 14:12:53,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:53,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313062578] [2024-06-04 14:12:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:53,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:55,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:55,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313062578] [2024-06-04 14:12:55,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313062578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:55,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:55,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:12:55,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974298571] [2024-06-04 14:12:55,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:55,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:12:55,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:55,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:12:55,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:12:55,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:55,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 190 transitions, 1755 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:55,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:55,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:55,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:56,464 INFO L124 PetriNetUnfolderBase]: 593/1174 cut-off events. [2024-06-04 14:12:56,464 INFO L125 PetriNetUnfolderBase]: For 135938/135941 co-relation queries the response was YES. [2024-06-04 14:12:56,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5589 conditions, 1174 events. 593/1174 cut-off events. For 135938/135941 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6565 event pairs, 120 based on Foata normal form. 10/1178 useless extension candidates. Maximal degree in co-relation 5445. Up to 808 conditions per place. [2024-06-04 14:12:56,476 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 144 selfloop transitions, 59 changer transitions 11/216 dead transitions. [2024-06-04 14:12:56,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 216 transitions, 2249 flow [2024-06-04 14:12:56,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:12:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:12:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 14:12:56,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-04 14:12:56,477 INFO L175 Difference]: Start difference. First operand has 308 places, 190 transitions, 1755 flow. Second operand 12 states and 136 transitions. [2024-06-04 14:12:56,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 216 transitions, 2249 flow [2024-06-04 14:12:56,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 216 transitions, 2031 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-04 14:12:56,787 INFO L231 Difference]: Finished difference. Result has 311 places, 186 transitions, 1610 flow [2024-06-04 14:12:56,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1610, PETRI_PLACES=311, PETRI_TRANSITIONS=186} [2024-06-04 14:12:56,788 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-04 14:12:56,788 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 186 transitions, 1610 flow [2024-06-04 14:12:56,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:12:56,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:56,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:56,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-04 14:12:56,788 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:56,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2042714428, now seen corresponding path program 34 times [2024-06-04 14:12:56,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:56,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387933571] [2024-06-04 14:12:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:56,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:12:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:12:58,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:12:58,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387933571] [2024-06-04 14:12:58,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387933571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:12:58,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:12:58,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:12:58,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487058842] [2024-06-04 14:12:58,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:12:58,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:12:58,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:12:58,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:12:58,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:12:58,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:12:58,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 186 transitions, 1610 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:58,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:12:58,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:12:58,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:12:59,414 INFO L124 PetriNetUnfolderBase]: 564/1119 cut-off events. [2024-06-04 14:12:59,414 INFO L125 PetriNetUnfolderBase]: For 62772/62775 co-relation queries the response was YES. [2024-06-04 14:12:59,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4896 conditions, 1119 events. 564/1119 cut-off events. For 62772/62775 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6281 event pairs, 107 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 4751. Up to 771 conditions per place. [2024-06-04 14:12:59,425 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 142 selfloop transitions, 63 changer transitions 0/207 dead transitions. [2024-06-04 14:12:59,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 207 transitions, 2072 flow [2024-06-04 14:12:59,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:12:59,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:12:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:12:59,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:12:59,426 INFO L175 Difference]: Start difference. First operand has 311 places, 186 transitions, 1610 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:12:59,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 207 transitions, 2072 flow [2024-06-04 14:12:59,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 207 transitions, 1907 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 14:12:59,731 INFO L231 Difference]: Finished difference. Result has 305 places, 186 transitions, 1575 flow [2024-06-04 14:12:59,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1575, PETRI_PLACES=305, PETRI_TRANSITIONS=186} [2024-06-04 14:12:59,731 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 273 predicate places. [2024-06-04 14:12:59,731 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 186 transitions, 1575 flow [2024-06-04 14:12:59,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-04 14:12:59,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:12:59,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:12:59,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-04 14:12:59,732 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:12:59,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:12:59,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2062997922, now seen corresponding path program 1 times [2024-06-04 14:12:59,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:12:59,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418275388] [2024-06-04 14:12:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:12:59,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:12:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:01,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:01,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418275388] [2024-06-04 14:13:01,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418275388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:01,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:01,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:01,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654144912] [2024-06-04 14:13:01,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:01,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:01,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:01,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:01,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 186 transitions, 1575 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:01,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:01,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:01,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:02,168 INFO L124 PetriNetUnfolderBase]: 572/1138 cut-off events. [2024-06-04 14:13:02,168 INFO L125 PetriNetUnfolderBase]: For 90573/90573 co-relation queries the response was YES. [2024-06-04 14:13:02,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 1138 events. 572/1138 cut-off events. For 90573/90573 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6391 event pairs, 127 based on Foata normal form. 6/1143 useless extension candidates. Maximal degree in co-relation 4718. Up to 958 conditions per place. [2024-06-04 14:13:02,181 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 169 selfloop transitions, 13 changer transitions 28/212 dead transitions. [2024-06-04 14:13:02,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 212 transitions, 2061 flow [2024-06-04 14:13:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-04 14:13:02,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-04 14:13:02,181 INFO L175 Difference]: Start difference. First operand has 305 places, 186 transitions, 1575 flow. Second operand 12 states and 121 transitions. [2024-06-04 14:13:02,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 212 transitions, 2061 flow [2024-06-04 14:13:02,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 212 transitions, 1643 flow, removed 42 selfloop flow, removed 17 redundant places. [2024-06-04 14:13:02,495 INFO L231 Difference]: Finished difference. Result has 300 places, 175 transitions, 1111 flow [2024-06-04 14:13:02,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1111, PETRI_PLACES=300, PETRI_TRANSITIONS=175} [2024-06-04 14:13:02,495 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2024-06-04 14:13:02,495 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 175 transitions, 1111 flow [2024-06-04 14:13:02,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:02,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:02,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:02,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-04 14:13:02,496 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:02,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:02,496 INFO L85 PathProgramCache]: Analyzing trace with hash -469821500, now seen corresponding path program 2 times [2024-06-04 14:13:02,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:02,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735442278] [2024-06-04 14:13:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:02,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:04,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:04,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735442278] [2024-06-04 14:13:04,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735442278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:04,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:04,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:04,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930640891] [2024-06-04 14:13:04,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:04,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:04,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:04,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:04,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:04,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 175 transitions, 1111 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:04,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:04,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:04,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:05,186 INFO L124 PetriNetUnfolderBase]: 525/1051 cut-off events. [2024-06-04 14:13:05,186 INFO L125 PetriNetUnfolderBase]: For 88226/88226 co-relation queries the response was YES. [2024-06-04 14:13:05,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 1051 events. 525/1051 cut-off events. For 88226/88226 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5821 event pairs, 125 based on Foata normal form. 6/1056 useless extension candidates. Maximal degree in co-relation 3659. Up to 908 conditions per place. [2024-06-04 14:13:05,195 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 166 selfloop transitions, 16 changer transitions 14/198 dead transitions. [2024-06-04 14:13:05,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 198 transitions, 1559 flow [2024-06-04 14:13:05,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-04 14:13:05,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3005050505050505 [2024-06-04 14:13:05,196 INFO L175 Difference]: Start difference. First operand has 300 places, 175 transitions, 1111 flow. Second operand 12 states and 119 transitions. [2024-06-04 14:13:05,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 198 transitions, 1559 flow [2024-06-04 14:13:05,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 198 transitions, 1521 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:05,397 INFO L231 Difference]: Finished difference. Result has 287 places, 171 transitions, 1090 flow [2024-06-04 14:13:05,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1090, PETRI_PLACES=287, PETRI_TRANSITIONS=171} [2024-06-04 14:13:05,397 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-04 14:13:05,397 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 171 transitions, 1090 flow [2024-06-04 14:13:05,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:05,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:05,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:05,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-04 14:13:05,397 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:05,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash 670624010, now seen corresponding path program 3 times [2024-06-04 14:13:05,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:05,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182439677] [2024-06-04 14:13:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:05,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:07,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:07,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182439677] [2024-06-04 14:13:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182439677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:07,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:07,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:07,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679028688] [2024-06-04 14:13:07,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:07,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:07,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:07,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:07,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:07,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:07,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 171 transitions, 1090 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:07,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:07,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:07,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:07,714 INFO L124 PetriNetUnfolderBase]: 511/1025 cut-off events. [2024-06-04 14:13:07,715 INFO L125 PetriNetUnfolderBase]: For 81122/81122 co-relation queries the response was YES. [2024-06-04 14:13:07,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 1025 events. 511/1025 cut-off events. For 81122/81122 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5629 event pairs, 121 based on Foata normal form. 6/1030 useless extension candidates. Maximal degree in co-relation 3569. Up to 882 conditions per place. [2024-06-04 14:13:07,723 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 161 selfloop transitions, 14 changer transitions 15/192 dead transitions. [2024-06-04 14:13:07,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 192 transitions, 1522 flow [2024-06-04 14:13:07,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-04 14:13:07,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30578512396694213 [2024-06-04 14:13:07,724 INFO L175 Difference]: Start difference. First operand has 287 places, 171 transitions, 1090 flow. Second operand 11 states and 111 transitions. [2024-06-04 14:13:07,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 192 transitions, 1522 flow [2024-06-04 14:13:07,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 192 transitions, 1482 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:07,880 INFO L231 Difference]: Finished difference. Result has 280 places, 166 transitions, 1059 flow [2024-06-04 14:13:07,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1059, PETRI_PLACES=280, PETRI_TRANSITIONS=166} [2024-06-04 14:13:07,880 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2024-06-04 14:13:07,880 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 166 transitions, 1059 flow [2024-06-04 14:13:07,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:07,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:07,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:07,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-04 14:13:07,881 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:07,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:07,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1140015328, now seen corresponding path program 4 times [2024-06-04 14:13:07,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:07,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279017085] [2024-06-04 14:13:07,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:07,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:09,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:09,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279017085] [2024-06-04 14:13:09,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279017085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:09,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:09,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:09,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65514208] [2024-06-04 14:13:09,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:09,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:09,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:09,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:10,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:10,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 166 transitions, 1059 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:10,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:10,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:10,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:10,465 INFO L124 PetriNetUnfolderBase]: 493/991 cut-off events. [2024-06-04 14:13:10,466 INFO L125 PetriNetUnfolderBase]: For 77004/77004 co-relation queries the response was YES. [2024-06-04 14:13:10,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 991 events. 493/991 cut-off events. For 77004/77004 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5373 event pairs, 115 based on Foata normal form. 6/996 useless extension candidates. Maximal degree in co-relation 3457. Up to 848 conditions per place. [2024-06-04 14:13:10,472 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 150 selfloop transitions, 8 changer transitions 29/189 dead transitions. [2024-06-04 14:13:10,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 189 transitions, 1489 flow [2024-06-04 14:13:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-04 14:13:10,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-04 14:13:10,473 INFO L175 Difference]: Start difference. First operand has 280 places, 166 transitions, 1059 flow. Second operand 12 states and 117 transitions. [2024-06-04 14:13:10,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 189 transitions, 1489 flow [2024-06-04 14:13:10,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 189 transitions, 1451 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:10,658 INFO L231 Difference]: Finished difference. Result has 273 places, 156 transitions, 979 flow [2024-06-04 14:13:10,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=979, PETRI_PLACES=273, PETRI_TRANSITIONS=156} [2024-06-04 14:13:10,659 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 241 predicate places. [2024-06-04 14:13:10,659 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 156 transitions, 979 flow [2024-06-04 14:13:10,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:10,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:10,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:10,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-04 14:13:10,659 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:10,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:10,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1378099064, now seen corresponding path program 5 times [2024-06-04 14:13:10,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:10,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132312039] [2024-06-04 14:13:10,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:10,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:12,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:12,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132312039] [2024-06-04 14:13:12,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132312039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:12,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:12,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:12,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083652709] [2024-06-04 14:13:12,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:12,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:12,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:12,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:12,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:13,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:13,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 156 transitions, 979 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:13,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:13,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:13,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:13,563 INFO L124 PetriNetUnfolderBase]: 450/904 cut-off events. [2024-06-04 14:13:13,563 INFO L125 PetriNetUnfolderBase]: For 71516/71516 co-relation queries the response was YES. [2024-06-04 14:13:13,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3280 conditions, 904 events. 450/904 cut-off events. For 71516/71516 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4841 event pairs, 100 based on Foata normal form. 6/909 useless extension candidates. Maximal degree in co-relation 3156. Up to 747 conditions per place. [2024-06-04 14:13:13,570 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 136 selfloop transitions, 24 changer transitions 14/176 dead transitions. [2024-06-04 14:13:13,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 176 transitions, 1373 flow [2024-06-04 14:13:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:13:13,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-04 14:13:13,571 INFO L175 Difference]: Start difference. First operand has 273 places, 156 transitions, 979 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:13:13,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 176 transitions, 1373 flow [2024-06-04 14:13:13,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 176 transitions, 1335 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 14:13:13,702 INFO L231 Difference]: Finished difference. Result has 258 places, 152 transitions, 974 flow [2024-06-04 14:13:13,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=974, PETRI_PLACES=258, PETRI_TRANSITIONS=152} [2024-06-04 14:13:13,702 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 226 predicate places. [2024-06-04 14:13:13,702 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 152 transitions, 974 flow [2024-06-04 14:13:13,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:13,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:13,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:13,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-04 14:13:13,703 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:13,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:13,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1374225060, now seen corresponding path program 6 times [2024-06-04 14:13:13,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:13,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081583026] [2024-06-04 14:13:13,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:13,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:15,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:15,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081583026] [2024-06-04 14:13:15,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081583026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:15,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:15,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:15,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618161897] [2024-06-04 14:13:15,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:15,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:15,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:15,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:15,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:15,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:15,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 152 transitions, 974 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:15,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:15,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:15,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:16,301 INFO L124 PetriNetUnfolderBase]: 436/878 cut-off events. [2024-06-04 14:13:16,301 INFO L125 PetriNetUnfolderBase]: For 63925/63925 co-relation queries the response was YES. [2024-06-04 14:13:16,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3200 conditions, 878 events. 436/878 cut-off events. For 63925/63925 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4674 event pairs, 96 based on Foata normal form. 6/883 useless extension candidates. Maximal degree in co-relation 3083. Up to 721 conditions per place. [2024-06-04 14:13:16,306 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 131 selfloop transitions, 22 changer transitions 17/172 dead transitions. [2024-06-04 14:13:16,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 172 transitions, 1360 flow [2024-06-04 14:13:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:16,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-04 14:13:16,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3005050505050505 [2024-06-04 14:13:16,307 INFO L175 Difference]: Start difference. First operand has 258 places, 152 transitions, 974 flow. Second operand 12 states and 119 transitions. [2024-06-04 14:13:16,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 172 transitions, 1360 flow [2024-06-04 14:13:16,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 172 transitions, 1304 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:16,435 INFO L231 Difference]: Finished difference. Result has 252 places, 147 transitions, 943 flow [2024-06-04 14:13:16,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=943, PETRI_PLACES=252, PETRI_TRANSITIONS=147} [2024-06-04 14:13:16,436 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 220 predicate places. [2024-06-04 14:13:16,436 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 147 transitions, 943 flow [2024-06-04 14:13:16,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:16,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:16,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:16,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-04 14:13:16,437 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:16,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:16,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1942371422, now seen corresponding path program 7 times [2024-06-04 14:13:16,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:16,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989205367] [2024-06-04 14:13:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:16,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:18,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:18,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989205367] [2024-06-04 14:13:18,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989205367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:18,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:18,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819852813] [2024-06-04 14:13:18,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:18,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:18,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:18,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:18,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:18,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:18,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 147 transitions, 943 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:18,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:18,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:18,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:18,929 INFO L124 PetriNetUnfolderBase]: 418/844 cut-off events. [2024-06-04 14:13:18,929 INFO L125 PetriNetUnfolderBase]: For 60265/60265 co-relation queries the response was YES. [2024-06-04 14:13:18,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3085 conditions, 844 events. 418/844 cut-off events. For 60265/60265 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4442 event pairs, 75 based on Foata normal form. 6/849 useless extension candidates. Maximal degree in co-relation 2971. Up to 661 conditions per place. [2024-06-04 14:13:18,934 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 126 selfloop transitions, 22 changer transitions 17/167 dead transitions. [2024-06-04 14:13:18,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 167 transitions, 1319 flow [2024-06-04 14:13:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:13:18,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-04 14:13:18,935 INFO L175 Difference]: Start difference. First operand has 252 places, 147 transitions, 943 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:13:18,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 167 transitions, 1319 flow [2024-06-04 14:13:19,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 167 transitions, 1265 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:19,048 INFO L231 Difference]: Finished difference. Result has 244 places, 140 transitions, 898 flow [2024-06-04 14:13:19,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=898, PETRI_PLACES=244, PETRI_TRANSITIONS=140} [2024-06-04 14:13:19,049 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 212 predicate places. [2024-06-04 14:13:19,049 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 140 transitions, 898 flow [2024-06-04 14:13:19,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:19,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:19,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:19,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-04 14:13:19,049 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:19,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:19,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1677080394, now seen corresponding path program 8 times [2024-06-04 14:13:19,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:19,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062265749] [2024-06-04 14:13:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:19,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:21,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:21,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062265749] [2024-06-04 14:13:21,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062265749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:21,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:21,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:21,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436711593] [2024-06-04 14:13:21,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:21,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:21,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:21,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:21,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:22,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:22,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 140 transitions, 898 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:22,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:22,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:22,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:22,453 INFO L124 PetriNetUnfolderBase]: 396/802 cut-off events. [2024-06-04 14:13:22,453 INFO L125 PetriNetUnfolderBase]: For 55555/55555 co-relation queries the response was YES. [2024-06-04 14:13:22,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2947 conditions, 802 events. 396/802 cut-off events. For 55555/55555 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4150 event pairs, 84 based on Foata normal form. 6/807 useless extension candidates. Maximal degree in co-relation 2837. Up to 669 conditions per place. [2024-06-04 14:13:22,459 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 128 selfloop transitions, 21 changer transitions 11/162 dead transitions. [2024-06-04 14:13:22,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 162 transitions, 1272 flow [2024-06-04 14:13:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:22,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:13:22,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-04 14:13:22,460 INFO L175 Difference]: Start difference. First operand has 244 places, 140 transitions, 898 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:13:22,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 162 transitions, 1272 flow [2024-06-04 14:13:22,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 162 transitions, 1216 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 14:13:22,572 INFO L231 Difference]: Finished difference. Result has 234 places, 137 transitions, 873 flow [2024-06-04 14:13:22,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=873, PETRI_PLACES=234, PETRI_TRANSITIONS=137} [2024-06-04 14:13:22,573 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2024-06-04 14:13:22,573 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 137 transitions, 873 flow [2024-06-04 14:13:22,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:22,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:22,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:22,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-04 14:13:22,573 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:22,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:22,573 INFO L85 PathProgramCache]: Analyzing trace with hash 264753086, now seen corresponding path program 9 times [2024-06-04 14:13:22,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:22,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203036372] [2024-06-04 14:13:22,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:22,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:24,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:24,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203036372] [2024-06-04 14:13:24,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203036372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:24,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:24,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:24,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114858839] [2024-06-04 14:13:24,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:24,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:24,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:25,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:25,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 137 transitions, 873 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:25,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:25,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:25,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:25,674 INFO L124 PetriNetUnfolderBase]: 386/784 cut-off events. [2024-06-04 14:13:25,674 INFO L125 PetriNetUnfolderBase]: For 49909/49909 co-relation queries the response was YES. [2024-06-04 14:13:25,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 784 events. 386/784 cut-off events. For 49909/49909 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4025 event pairs, 84 based on Foata normal form. 6/789 useless extension candidates. Maximal degree in co-relation 2755. Up to 632 conditions per place. [2024-06-04 14:13:25,679 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 125 selfloop transitions, 18 changer transitions 15/160 dead transitions. [2024-06-04 14:13:25,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 160 transitions, 1247 flow [2024-06-04 14:13:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-04 14:13:25,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-04 14:13:25,680 INFO L175 Difference]: Start difference. First operand has 234 places, 137 transitions, 873 flow. Second operand 12 states and 121 transitions. [2024-06-04 14:13:25,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 160 transitions, 1247 flow [2024-06-04 14:13:25,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 160 transitions, 1199 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:25,777 INFO L231 Difference]: Finished difference. Result has 230 places, 131 transitions, 824 flow [2024-06-04 14:13:25,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=824, PETRI_PLACES=230, PETRI_TRANSITIONS=131} [2024-06-04 14:13:25,777 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 198 predicate places. [2024-06-04 14:13:25,778 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 131 transitions, 824 flow [2024-06-04 14:13:25,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:25,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:25,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:25,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-04 14:13:25,778 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:25,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:25,778 INFO L85 PathProgramCache]: Analyzing trace with hash -402883968, now seen corresponding path program 10 times [2024-06-04 14:13:25,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:25,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373874402] [2024-06-04 14:13:25,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:25,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:27,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:27,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373874402] [2024-06-04 14:13:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373874402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:27,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:27,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587595002] [2024-06-04 14:13:27,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:27,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:27,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:27,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:27,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:27,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:27,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 131 transitions, 824 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:27,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:27,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:27,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:28,353 INFO L124 PetriNetUnfolderBase]: 371/755 cut-off events. [2024-06-04 14:13:28,354 INFO L125 PetriNetUnfolderBase]: For 47735/47735 co-relation queries the response was YES. [2024-06-04 14:13:28,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 755 events. 371/755 cut-off events. For 47735/47735 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3849 event pairs, 84 based on Foata normal form. 6/760 useless extension candidates. Maximal degree in co-relation 2639. Up to 622 conditions per place. [2024-06-04 14:13:28,359 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 120 selfloop transitions, 18 changer transitions 11/151 dead transitions. [2024-06-04 14:13:28,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 151 transitions, 1170 flow [2024-06-04 14:13:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:28,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-04 14:13:28,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29292929292929293 [2024-06-04 14:13:28,359 INFO L175 Difference]: Start difference. First operand has 230 places, 131 transitions, 824 flow. Second operand 12 states and 116 transitions. [2024-06-04 14:13:28,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 151 transitions, 1170 flow [2024-06-04 14:13:28,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 151 transitions, 1126 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:28,449 INFO L231 Difference]: Finished difference. Result has 223 places, 128 transitions, 805 flow [2024-06-04 14:13:28,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=805, PETRI_PLACES=223, PETRI_TRANSITIONS=128} [2024-06-04 14:13:28,450 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 191 predicate places. [2024-06-04 14:13:28,450 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 128 transitions, 805 flow [2024-06-04 14:13:28,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:28,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:28,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:28,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-04 14:13:28,450 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:28,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash -196607410, now seen corresponding path program 11 times [2024-06-04 14:13:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:28,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303290249] [2024-06-04 14:13:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:28,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:30,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:30,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303290249] [2024-06-04 14:13:30,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303290249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:30,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:30,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:30,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974280765] [2024-06-04 14:13:30,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:30,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:30,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:30,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:30,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:30,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:30,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 128 transitions, 805 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:30,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:30,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:30,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:31,161 INFO L124 PetriNetUnfolderBase]: 361/737 cut-off events. [2024-06-04 14:13:31,161 INFO L125 PetriNetUnfolderBase]: For 44597/44597 co-relation queries the response was YES. [2024-06-04 14:13:31,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 737 events. 361/737 cut-off events. For 44597/44597 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3731 event pairs, 82 based on Foata normal form. 6/742 useless extension candidates. Maximal degree in co-relation 2569. Up to 604 conditions per place. [2024-06-04 14:13:31,167 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 117 selfloop transitions, 13 changer transitions 18/150 dead transitions. [2024-06-04 14:13:31,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 150 transitions, 1155 flow [2024-06-04 14:13:31,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-04 14:13:31,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29797979797979796 [2024-06-04 14:13:31,167 INFO L175 Difference]: Start difference. First operand has 223 places, 128 transitions, 805 flow. Second operand 12 states and 118 transitions. [2024-06-04 14:13:31,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 150 transitions, 1155 flow [2024-06-04 14:13:31,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 150 transitions, 1113 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:31,242 INFO L231 Difference]: Finished difference. Result has 219 places, 121 transitions, 748 flow [2024-06-04 14:13:31,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=748, PETRI_PLACES=219, PETRI_TRANSITIONS=121} [2024-06-04 14:13:31,242 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2024-06-04 14:13:31,243 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 121 transitions, 748 flow [2024-06-04 14:13:31,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:31,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:31,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:31,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-04 14:13:31,243 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:31,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1846709238, now seen corresponding path program 12 times [2024-06-04 14:13:31,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:31,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388984653] [2024-06-04 14:13:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:31,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:33,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:33,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388984653] [2024-06-04 14:13:33,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388984653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:33,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:33,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:33,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986119190] [2024-06-04 14:13:33,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:33,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:33,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:33,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:33,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:33,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:33,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 121 transitions, 748 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:33,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:33,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:33,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:33,974 INFO L124 PetriNetUnfolderBase]: 342/700 cut-off events. [2024-06-04 14:13:33,975 INFO L125 PetriNetUnfolderBase]: For 42529/42529 co-relation queries the response was YES. [2024-06-04 14:13:33,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 700 events. 342/700 cut-off events. For 42529/42529 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3483 event pairs, 80 based on Foata normal form. 6/705 useless extension candidates. Maximal degree in co-relation 2431. Up to 586 conditions per place. [2024-06-04 14:13:33,979 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 112 selfloop transitions, 13 changer transitions 14/141 dead transitions. [2024-06-04 14:13:33,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 141 transitions, 1074 flow [2024-06-04 14:13:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-04 14:13:33,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2024-06-04 14:13:33,980 INFO L175 Difference]: Start difference. First operand has 219 places, 121 transitions, 748 flow. Second operand 12 states and 114 transitions. [2024-06-04 14:13:33,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 141 transitions, 1074 flow [2024-06-04 14:13:34,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 141 transitions, 1038 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:34,056 INFO L231 Difference]: Finished difference. Result has 210 places, 117 transitions, 723 flow [2024-06-04 14:13:34,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=723, PETRI_PLACES=210, PETRI_TRANSITIONS=117} [2024-06-04 14:13:34,056 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 178 predicate places. [2024-06-04 14:13:34,056 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 117 transitions, 723 flow [2024-06-04 14:13:34,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:34,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:34,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:34,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-04 14:13:34,056 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:34,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:34,057 INFO L85 PathProgramCache]: Analyzing trace with hash 729857078, now seen corresponding path program 13 times [2024-06-04 14:13:34,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:34,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092633643] [2024-06-04 14:13:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:34,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:36,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:36,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092633643] [2024-06-04 14:13:36,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092633643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:36,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:36,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:36,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232559167] [2024-06-04 14:13:36,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:36,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:36,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:36,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:36,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:36,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:36,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 117 transitions, 723 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:36,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:36,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:36,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:37,069 INFO L124 PetriNetUnfolderBase]: 328/674 cut-off events. [2024-06-04 14:13:37,069 INFO L125 PetriNetUnfolderBase]: For 38589/38589 co-relation queries the response was YES. [2024-06-04 14:13:37,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 674 events. 328/674 cut-off events. For 38589/38589 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3303 event pairs, 76 based on Foata normal form. 6/679 useless extension candidates. Maximal degree in co-relation 2337. Up to 560 conditions per place. [2024-06-04 14:13:37,074 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 98 selfloop transitions, 3 changer transitions 34/137 dead transitions. [2024-06-04 14:13:37,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 137 transitions, 1041 flow [2024-06-04 14:13:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-04 14:13:37,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28535353535353536 [2024-06-04 14:13:37,074 INFO L175 Difference]: Start difference. First operand has 210 places, 117 transitions, 723 flow. Second operand 12 states and 113 transitions. [2024-06-04 14:13:37,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 137 transitions, 1041 flow [2024-06-04 14:13:37,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 137 transitions, 1007 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:37,140 INFO L231 Difference]: Finished difference. Result has 204 places, 102 transitions, 598 flow [2024-06-04 14:13:37,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=598, PETRI_PLACES=204, PETRI_TRANSITIONS=102} [2024-06-04 14:13:37,140 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 172 predicate places. [2024-06-04 14:13:37,140 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 102 transitions, 598 flow [2024-06-04 14:13:37,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:37,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:37,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:37,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-04 14:13:37,141 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:37,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:37,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1058945624, now seen corresponding path program 14 times [2024-06-04 14:13:37,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:37,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105263713] [2024-06-04 14:13:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:37,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:38,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:38,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:38,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105263713] [2024-06-04 14:13:38,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105263713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:38,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:38,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:38,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083039982] [2024-06-04 14:13:38,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:38,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:38,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:38,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:38,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:38,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:38,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 102 transitions, 598 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:38,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:38,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:38,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:39,180 INFO L124 PetriNetUnfolderBase]: 289/589 cut-off events. [2024-06-04 14:13:39,180 INFO L125 PetriNetUnfolderBase]: For 35556/35556 co-relation queries the response was YES. [2024-06-04 14:13:39,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 589 events. 289/589 cut-off events. For 35556/35556 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2856 event pairs, 73 based on Foata normal form. 6/594 useless extension candidates. Maximal degree in co-relation 2015. Up to 526 conditions per place. [2024-06-04 14:13:39,184 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 91 selfloop transitions, 8 changer transitions 16/117 dead transitions. [2024-06-04 14:13:39,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 117 transitions, 862 flow [2024-06-04 14:13:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 107 transitions. [2024-06-04 14:13:39,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2702020202020202 [2024-06-04 14:13:39,184 INFO L175 Difference]: Start difference. First operand has 204 places, 102 transitions, 598 flow. Second operand 12 states and 107 transitions. [2024-06-04 14:13:39,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 117 transitions, 862 flow [2024-06-04 14:13:39,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 117 transitions, 830 flow, removed 11 selfloop flow, removed 15 redundant places. [2024-06-04 14:13:39,233 INFO L231 Difference]: Finished difference. Result has 182 places, 97 transitions, 561 flow [2024-06-04 14:13:39,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=561, PETRI_PLACES=182, PETRI_TRANSITIONS=97} [2024-06-04 14:13:39,234 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2024-06-04 14:13:39,234 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 97 transitions, 561 flow [2024-06-04 14:13:39,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:39,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:39,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:39,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-04 14:13:39,234 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:39,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:39,234 INFO L85 PathProgramCache]: Analyzing trace with hash 604984732, now seen corresponding path program 15 times [2024-06-04 14:13:39,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:39,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401307405] [2024-06-04 14:13:39,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:39,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:41,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:41,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401307405] [2024-06-04 14:13:41,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401307405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:41,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:41,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:41,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831574013] [2024-06-04 14:13:41,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:41,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:41,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:41,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:41,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:42,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:42,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 97 transitions, 561 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:42,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:42,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:42,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:42,432 INFO L124 PetriNetUnfolderBase]: 278/564 cut-off events. [2024-06-04 14:13:42,433 INFO L125 PetriNetUnfolderBase]: For 29364/29364 co-relation queries the response was YES. [2024-06-04 14:13:42,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 564 events. 278/564 cut-off events. For 29364/29364 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2683 event pairs, 43 based on Foata normal form. 6/569 useless extension candidates. Maximal degree in co-relation 1892. Up to 384 conditions per place. [2024-06-04 14:13:42,436 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 75 selfloop transitions, 31 changer transitions 13/121 dead transitions. [2024-06-04 14:13:42,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 121 transitions, 849 flow [2024-06-04 14:13:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 14:13:42,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-04 14:13:42,437 INFO L175 Difference]: Start difference. First operand has 182 places, 97 transitions, 561 flow. Second operand 12 states and 125 transitions. [2024-06-04 14:13:42,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 121 transitions, 849 flow [2024-06-04 14:13:42,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 121 transitions, 823 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:42,481 INFO L231 Difference]: Finished difference. Result has 174 places, 93 transitions, 580 flow [2024-06-04 14:13:42,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=580, PETRI_PLACES=174, PETRI_TRANSITIONS=93} [2024-06-04 14:13:42,482 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 142 predicate places. [2024-06-04 14:13:42,482 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 93 transitions, 580 flow [2024-06-04 14:13:42,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:42,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:42,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:42,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-04 14:13:42,482 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:42,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1015570510, now seen corresponding path program 16 times [2024-06-04 14:13:42,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:42,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783674555] [2024-06-04 14:13:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:42,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:45,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:45,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783674555] [2024-06-04 14:13:45,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783674555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:45,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:45,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:45,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701536002] [2024-06-04 14:13:45,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:45,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:45,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:45,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:45,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:45,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:45,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 93 transitions, 580 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:45,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:45,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:45,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:45,822 INFO L124 PetriNetUnfolderBase]: 266/540 cut-off events. [2024-06-04 14:13:45,823 INFO L125 PetriNetUnfolderBase]: For 26184/26184 co-relation queries the response was YES. [2024-06-04 14:13:45,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 540 events. 266/540 cut-off events. For 26184/26184 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2520 event pairs, 45 based on Foata normal form. 6/545 useless extension candidates. Maximal degree in co-relation 1878. Up to 352 conditions per place. [2024-06-04 14:13:45,826 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 74 selfloop transitions, 28 changer transitions 13/117 dead transitions. [2024-06-04 14:13:45,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 117 transitions, 860 flow [2024-06-04 14:13:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-04 14:13:45,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 14:13:45,826 INFO L175 Difference]: Start difference. First operand has 174 places, 93 transitions, 580 flow. Second operand 12 states and 126 transitions. [2024-06-04 14:13:45,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 117 transitions, 860 flow [2024-06-04 14:13:45,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 117 transitions, 790 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:45,863 INFO L231 Difference]: Finished difference. Result has 168 places, 89 transitions, 549 flow [2024-06-04 14:13:45,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=549, PETRI_PLACES=168, PETRI_TRANSITIONS=89} [2024-06-04 14:13:45,863 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 136 predicate places. [2024-06-04 14:13:45,863 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 89 transitions, 549 flow [2024-06-04 14:13:45,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:45,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:45,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:45,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-04 14:13:45,863 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:45,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash 377083582, now seen corresponding path program 17 times [2024-06-04 14:13:45,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:45,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830266462] [2024-06-04 14:13:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:48,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:48,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830266462] [2024-06-04 14:13:48,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830266462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:48,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:48,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:13:48,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063144895] [2024-06-04 14:13:48,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:48,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:13:48,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:48,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:13:48,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:13:48,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:48,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 89 transitions, 549 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:48,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:48,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:48,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:48,659 INFO L124 PetriNetUnfolderBase]: 254/516 cut-off events. [2024-06-04 14:13:48,659 INFO L125 PetriNetUnfolderBase]: For 23866/23866 co-relation queries the response was YES. [2024-06-04 14:13:48,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 516 events. 254/516 cut-off events. For 23866/23866 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2379 event pairs, 43 based on Foata normal form. 6/521 useless extension candidates. Maximal degree in co-relation 1782. Up to 350 conditions per place. [2024-06-04 14:13:48,662 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 69 selfloop transitions, 29 changer transitions 11/111 dead transitions. [2024-06-04 14:13:48,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 111 transitions, 813 flow [2024-06-04 14:13:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-04 14:13:48,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-04 14:13:48,663 INFO L175 Difference]: Start difference. First operand has 168 places, 89 transitions, 549 flow. Second operand 12 states and 121 transitions. [2024-06-04 14:13:48,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 111 transitions, 813 flow [2024-06-04 14:13:48,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 111 transitions, 749 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:48,697 INFO L231 Difference]: Finished difference. Result has 162 places, 86 transitions, 532 flow [2024-06-04 14:13:48,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=532, PETRI_PLACES=162, PETRI_TRANSITIONS=86} [2024-06-04 14:13:48,697 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 130 predicate places. [2024-06-04 14:13:48,697 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 86 transitions, 532 flow [2024-06-04 14:13:48,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:13:48,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:48,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:48,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-04 14:13:48,698 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:48,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:48,698 INFO L85 PathProgramCache]: Analyzing trace with hash 376910602, now seen corresponding path program 18 times [2024-06-04 14:13:48,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:48,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261407505] [2024-06-04 14:13:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:48,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:50,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:50,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261407505] [2024-06-04 14:13:50,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261407505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:50,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:50,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:50,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762156873] [2024-06-04 14:13:50,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:50,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:50,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:50,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:50,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:50,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 86 transitions, 532 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:50,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:50,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:50,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:51,273 INFO L124 PetriNetUnfolderBase]: 244/498 cut-off events. [2024-06-04 14:13:51,273 INFO L125 PetriNetUnfolderBase]: For 21640/21640 co-relation queries the response was YES. [2024-06-04 14:13:51,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1794 conditions, 498 events. 244/498 cut-off events. For 21640/21640 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2273 event pairs, 41 based on Foata normal form. 6/503 useless extension candidates. Maximal degree in co-relation 1722. Up to 332 conditions per place. [2024-06-04 14:13:51,275 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 63 selfloop transitions, 25 changer transitions 18/108 dead transitions. [2024-06-04 14:13:51,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 108 transitions, 790 flow [2024-06-04 14:13:51,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:51,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:13:51,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-04 14:13:51,276 INFO L175 Difference]: Start difference. First operand has 162 places, 86 transitions, 532 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:13:51,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 108 transitions, 790 flow [2024-06-04 14:13:51,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 108 transitions, 726 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:13:51,306 INFO L231 Difference]: Finished difference. Result has 158 places, 80 transitions, 491 flow [2024-06-04 14:13:51,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=491, PETRI_PLACES=158, PETRI_TRANSITIONS=80} [2024-06-04 14:13:51,306 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 126 predicate places. [2024-06-04 14:13:51,306 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 80 transitions, 491 flow [2024-06-04 14:13:51,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:51,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:51,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:51,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-04 14:13:51,307 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:51,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:51,307 INFO L85 PathProgramCache]: Analyzing trace with hash 567416724, now seen corresponding path program 19 times [2024-06-04 14:13:51,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:51,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439063250] [2024-06-04 14:13:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:51,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:54,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:54,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439063250] [2024-06-04 14:13:54,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439063250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:54,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:54,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:54,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068823214] [2024-06-04 14:13:54,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:54,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:54,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:54,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:54,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:54,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:54,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 80 transitions, 491 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:54,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:54,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:54,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:55,046 INFO L124 PetriNetUnfolderBase]: 229/465 cut-off events. [2024-06-04 14:13:55,047 INFO L125 PetriNetUnfolderBase]: For 20272/20272 co-relation queries the response was YES. [2024-06-04 14:13:55,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1684 conditions, 465 events. 229/465 cut-off events. For 20272/20272 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2048 event pairs, 51 based on Foata normal form. 6/470 useless extension candidates. Maximal degree in co-relation 1614. Up to 292 conditions per place. [2024-06-04 14:13:55,049 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 61 selfloop transitions, 25 changer transitions 11/99 dead transitions. [2024-06-04 14:13:55,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 99 transitions, 725 flow [2024-06-04 14:13:55,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:13:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:13:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 14:13:55,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3085399449035813 [2024-06-04 14:13:55,050 INFO L175 Difference]: Start difference. First operand has 158 places, 80 transitions, 491 flow. Second operand 11 states and 112 transitions. [2024-06-04 14:13:55,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 99 transitions, 725 flow [2024-06-04 14:13:55,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 99 transitions, 663 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:55,079 INFO L231 Difference]: Finished difference. Result has 147 places, 76 transitions, 462 flow [2024-06-04 14:13:55,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=462, PETRI_PLACES=147, PETRI_TRANSITIONS=76} [2024-06-04 14:13:55,079 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2024-06-04 14:13:55,079 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 76 transitions, 462 flow [2024-06-04 14:13:55,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:55,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:55,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:55,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-04 14:13:55,080 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:55,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:55,080 INFO L85 PathProgramCache]: Analyzing trace with hash 787669360, now seen corresponding path program 20 times [2024-06-04 14:13:55,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:55,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221725428] [2024-06-04 14:13:55,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:55,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:57,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:57,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221725428] [2024-06-04 14:13:57,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221725428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:57,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:57,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:57,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926648246] [2024-06-04 14:13:57,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:57,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:57,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:57,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:57,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:13:57,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:13:57,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 76 transitions, 462 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:57,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:13:57,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:13:57,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:13:57,745 INFO L124 PetriNetUnfolderBase]: 217/441 cut-off events. [2024-06-04 14:13:57,745 INFO L125 PetriNetUnfolderBase]: For 16896/16896 co-relation queries the response was YES. [2024-06-04 14:13:57,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1579 conditions, 441 events. 217/441 cut-off events. For 16896/16896 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1914 event pairs, 43 based on Foata normal form. 6/446 useless extension candidates. Maximal degree in co-relation 1514. Up to 290 conditions per place. [2024-06-04 14:13:57,747 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 63 selfloop transitions, 22 changer transitions 11/98 dead transitions. [2024-06-04 14:13:57,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 98 transitions, 700 flow [2024-06-04 14:13:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:13:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:13:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-04 14:13:57,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30808080808080807 [2024-06-04 14:13:57,748 INFO L175 Difference]: Start difference. First operand has 147 places, 76 transitions, 462 flow. Second operand 12 states and 122 transitions. [2024-06-04 14:13:57,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 98 transitions, 700 flow [2024-06-04 14:13:57,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 98 transitions, 642 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:13:57,771 INFO L231 Difference]: Finished difference. Result has 142 places, 73 transitions, 437 flow [2024-06-04 14:13:57,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=437, PETRI_PLACES=142, PETRI_TRANSITIONS=73} [2024-06-04 14:13:57,771 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2024-06-04 14:13:57,771 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 73 transitions, 437 flow [2024-06-04 14:13:57,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:13:57,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:13:57,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:13:57,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-04 14:13:57,771 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:13:57,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:13:57,772 INFO L85 PathProgramCache]: Analyzing trace with hash 787496380, now seen corresponding path program 21 times [2024-06-04 14:13:57,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:13:57,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889918701] [2024-06-04 14:13:57,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:13:57,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:13:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:13:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:13:59,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:13:59,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889918701] [2024-06-04 14:13:59,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889918701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:13:59,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:13:59,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:13:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627777854] [2024-06-04 14:13:59,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:13:59,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:13:59,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:13:59,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:13:59,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:14:00,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:00,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 73 transitions, 437 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:14:00,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:00,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:00,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:00,388 INFO L124 PetriNetUnfolderBase]: 207/423 cut-off events. [2024-06-04 14:14:00,388 INFO L125 PetriNetUnfolderBase]: For 15038/15038 co-relation queries the response was YES. [2024-06-04 14:14:00,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 423 events. 207/423 cut-off events. For 15038/15038 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1796 event pairs, 41 based on Foata normal form. 6/428 useless extension candidates. Maximal degree in co-relation 1438. Up to 272 conditions per place. [2024-06-04 14:14:00,390 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 58 selfloop transitions, 19 changer transitions 16/95 dead transitions. [2024-06-04 14:14:00,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 95 transitions, 669 flow [2024-06-04 14:14:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:00,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-04 14:14:00,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-04 14:14:00,390 INFO L175 Difference]: Start difference. First operand has 142 places, 73 transitions, 437 flow. Second operand 12 states and 121 transitions. [2024-06-04 14:14:00,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 95 transitions, 669 flow [2024-06-04 14:14:00,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 95 transitions, 619 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:14:00,411 INFO L231 Difference]: Finished difference. Result has 138 places, 68 transitions, 404 flow [2024-06-04 14:14:00,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=126, 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=12, PETRI_FLOW=404, PETRI_PLACES=138, PETRI_TRANSITIONS=68} [2024-06-04 14:14:00,412 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2024-06-04 14:14:00,412 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 68 transitions, 404 flow [2024-06-04 14:14:00,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:14:00,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:00,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:00,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-04 14:14:00,412 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:00,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:00,413 INFO L85 PathProgramCache]: Analyzing trace with hash 339515574, now seen corresponding path program 22 times [2024-06-04 14:14:00,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:00,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969011781] [2024-06-04 14:14:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:00,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:02,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:02,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969011781] [2024-06-04 14:14:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969011781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:02,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055354484] [2024-06-04 14:14:02,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:02,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:02,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:02,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:02,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 68 transitions, 404 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:02,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:02,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:02,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:02,966 INFO L124 PetriNetUnfolderBase]: 191/391 cut-off events. [2024-06-04 14:14:02,967 INFO L125 PetriNetUnfolderBase]: For 13896/13896 co-relation queries the response was YES. [2024-06-04 14:14:02,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1394 conditions, 391 events. 191/391 cut-off events. For 13896/13896 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1605 event pairs, 47 based on Foata normal form. 6/396 useless extension candidates. Maximal degree in co-relation 1334. Up to 254 conditions per place. [2024-06-04 14:14:02,968 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 54 selfloop transitions, 21 changer transitions 9/86 dead transitions. [2024-06-04 14:14:02,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 86 transitions, 610 flow [2024-06-04 14:14:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:02,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-04 14:14:02,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30578512396694213 [2024-06-04 14:14:02,969 INFO L175 Difference]: Start difference. First operand has 138 places, 68 transitions, 404 flow. Second operand 11 states and 111 transitions. [2024-06-04 14:14:02,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 86 transitions, 610 flow [2024-06-04 14:14:02,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 86 transitions, 562 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:14:02,985 INFO L231 Difference]: Finished difference. Result has 129 places, 65 transitions, 387 flow [2024-06-04 14:14:02,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=387, PETRI_PLACES=129, PETRI_TRANSITIONS=65} [2024-06-04 14:14:02,986 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2024-06-04 14:14:02,986 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 65 transitions, 387 flow [2024-06-04 14:14:02,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:02,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:02,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:02,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-04 14:14:02,986 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:02,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1095718834, now seen corresponding path program 23 times [2024-06-04 14:14:02,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:02,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530496843] [2024-06-04 14:14:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:02,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:05,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530496843] [2024-06-04 14:14:05,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530496843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:05,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:05,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:05,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452457814] [2024-06-04 14:14:05,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:05,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:05,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:05,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:05,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:05,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:05,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 65 transitions, 387 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:05,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:05,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:05,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:05,615 INFO L124 PetriNetUnfolderBase]: 181/373 cut-off events. [2024-06-04 14:14:05,615 INFO L125 PetriNetUnfolderBase]: For 11644/11644 co-relation queries the response was YES. [2024-06-04 14:14:05,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 373 events. 181/373 cut-off events. For 11644/11644 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1511 event pairs, 41 based on Foata normal form. 6/378 useless extension candidates. Maximal degree in co-relation 1268. Up to 236 conditions per place. [2024-06-04 14:14:05,617 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 54 selfloop transitions, 18 changer transitions 11/85 dead transitions. [2024-06-04 14:14:05,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 85 transitions, 595 flow [2024-06-04 14:14:05,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-04 14:14:05,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-04 14:14:05,617 INFO L175 Difference]: Start difference. First operand has 129 places, 65 transitions, 387 flow. Second operand 12 states and 117 transitions. [2024-06-04 14:14:05,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 85 transitions, 595 flow [2024-06-04 14:14:05,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 85 transitions, 547 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:14:05,630 INFO L231 Difference]: Finished difference. Result has 126 places, 62 transitions, 364 flow [2024-06-04 14:14:05,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=364, PETRI_PLACES=126, PETRI_TRANSITIONS=62} [2024-06-04 14:14:05,630 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2024-06-04 14:14:05,630 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 62 transitions, 364 flow [2024-06-04 14:14:05,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:05,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:05,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:05,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-04 14:14:05,631 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:05,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:05,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1385959212, now seen corresponding path program 24 times [2024-06-04 14:14:05,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:05,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495897179] [2024-06-04 14:14:05,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:05,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:07,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:07,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495897179] [2024-06-04 14:14:07,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495897179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:07,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:07,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:07,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759367414] [2024-06-04 14:14:07,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:07,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:07,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:07,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:07,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:07,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:07,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 62 transitions, 364 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:07,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:07,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:07,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:08,012 INFO L124 PetriNetUnfolderBase]: 171/355 cut-off events. [2024-06-04 14:14:08,012 INFO L125 PetriNetUnfolderBase]: For 10608/10608 co-relation queries the response was YES. [2024-06-04 14:14:08,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 355 events. 171/355 cut-off events. For 10608/10608 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1413 event pairs, 39 based on Foata normal form. 6/360 useless extension candidates. Maximal degree in co-relation 1196. Up to 218 conditions per place. [2024-06-04 14:14:08,014 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 47 selfloop transitions, 17 changer transitions 16/82 dead transitions. [2024-06-04 14:14:08,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 82 transitions, 566 flow [2024-06-04 14:14:08,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-04 14:14:08,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29292929292929293 [2024-06-04 14:14:08,014 INFO L175 Difference]: Start difference. First operand has 126 places, 62 transitions, 364 flow. Second operand 12 states and 116 transitions. [2024-06-04 14:14:08,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 82 transitions, 566 flow [2024-06-04 14:14:08,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 82 transitions, 524 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:14:08,025 INFO L231 Difference]: Finished difference. Result has 122 places, 57 transitions, 335 flow [2024-06-04 14:14:08,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=335, PETRI_PLACES=122, PETRI_TRANSITIONS=57} [2024-06-04 14:14:08,025 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2024-06-04 14:14:08,025 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 57 transitions, 335 flow [2024-06-04 14:14:08,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:08,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:08,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:08,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-04 14:14:08,025 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:08,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:08,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1095891814, now seen corresponding path program 25 times [2024-06-04 14:14:08,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:08,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083350103] [2024-06-04 14:14:08,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:08,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:10,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:10,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083350103] [2024-06-04 14:14:10,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083350103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:10,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:10,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:10,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138300747] [2024-06-04 14:14:10,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:10,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:10,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:10,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:10,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:10,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 57 transitions, 335 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:10,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:10,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:10,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:10,499 INFO L124 PetriNetUnfolderBase]: 155/323 cut-off events. [2024-06-04 14:14:10,499 INFO L125 PetriNetUnfolderBase]: For 9610/9610 co-relation queries the response was YES. [2024-06-04 14:14:10,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 323 events. 155/323 cut-off events. For 9610/9610 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1243 event pairs, 37 based on Foata normal form. 6/328 useless extension candidates. Maximal degree in co-relation 1100. Up to 200 conditions per place. [2024-06-04 14:14:10,501 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 46 selfloop transitions, 15 changer transitions 14/77 dead transitions. [2024-06-04 14:14:10,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 77 transitions, 527 flow [2024-06-04 14:14:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-04 14:14:10,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29292929292929293 [2024-06-04 14:14:10,501 INFO L175 Difference]: Start difference. First operand has 122 places, 57 transitions, 335 flow. Second operand 12 states and 116 transitions. [2024-06-04 14:14:10,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 77 transitions, 527 flow [2024-06-04 14:14:10,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 77 transitions, 483 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:14:10,510 INFO L231 Difference]: Finished difference. Result has 114 places, 53 transitions, 306 flow [2024-06-04 14:14:10,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=306, PETRI_PLACES=114, PETRI_TRANSITIONS=53} [2024-06-04 14:14:10,510 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2024-06-04 14:14:10,510 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 53 transitions, 306 flow [2024-06-04 14:14:10,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:10,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:10,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:10,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-04 14:14:10,510 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:10,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:10,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1100360464, now seen corresponding path program 26 times [2024-06-04 14:14:10,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:10,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795863780] [2024-06-04 14:14:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:10,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:12,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795863780] [2024-06-04 14:14:12,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795863780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:12,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:12,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:14:12,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853246585] [2024-06-04 14:14:12,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:12,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:14:12,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:12,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:14:12,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:14:13,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:13,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 53 transitions, 306 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:14:13,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:13,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:13,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:13,346 INFO L124 PetriNetUnfolderBase]: 141/297 cut-off events. [2024-06-04 14:14:13,347 INFO L125 PetriNetUnfolderBase]: For 7796/7796 co-relation queries the response was YES. [2024-06-04 14:14:13,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 297 events. 141/297 cut-off events. For 7796/7796 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1102 event pairs, 33 based on Foata normal form. 6/302 useless extension candidates. Maximal degree in co-relation 1000. Up to 174 conditions per place. [2024-06-04 14:14:13,348 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 39 selfloop transitions, 11 changer transitions 21/73 dead transitions. [2024-06-04 14:14:13,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 73 transitions, 490 flow [2024-06-04 14:14:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-04 14:14:13,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2904040404040404 [2024-06-04 14:14:13,348 INFO L175 Difference]: Start difference. First operand has 114 places, 53 transitions, 306 flow. Second operand 12 states and 115 transitions. [2024-06-04 14:14:13,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 73 transitions, 490 flow [2024-06-04 14:14:13,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 73 transitions, 452 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:14:13,357 INFO L231 Difference]: Finished difference. Result has 108 places, 46 transitions, 259 flow [2024-06-04 14:14:13,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=259, PETRI_PLACES=108, PETRI_TRANSITIONS=46} [2024-06-04 14:14:13,358 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 76 predicate places. [2024-06-04 14:14:13,358 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 46 transitions, 259 flow [2024-06-04 14:14:13,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:14:13,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:13,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:13,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-04 14:14:13,358 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:13,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash 103007124, now seen corresponding path program 27 times [2024-06-04 14:14:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:13,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600474084] [2024-06-04 14:14:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:13,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:15,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:15,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600474084] [2024-06-04 14:14:15,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600474084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:15,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:15,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:15,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362392844] [2024-06-04 14:14:15,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:15,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:15,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:15,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:15,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:15,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:15,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 46 transitions, 259 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:15,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:15,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:15,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:15,921 INFO L124 PetriNetUnfolderBase]: 122/256 cut-off events. [2024-06-04 14:14:15,921 INFO L125 PetriNetUnfolderBase]: For 6575/6575 co-relation queries the response was YES. [2024-06-04 14:14:15,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 256 events. 122/256 cut-off events. For 6575/6575 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 876 event pairs, 37 based on Foata normal form. 6/261 useless extension candidates. Maximal degree in co-relation 866. Up to 156 conditions per place. [2024-06-04 14:14:15,922 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 38 selfloop transitions, 13 changer transitions 9/62 dead transitions. [2024-06-04 14:14:15,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 62 transitions, 413 flow [2024-06-04 14:14:15,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:14:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:14:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-04 14:14:15,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2865013774104683 [2024-06-04 14:14:15,923 INFO L175 Difference]: Start difference. First operand has 108 places, 46 transitions, 259 flow. Second operand 11 states and 104 transitions. [2024-06-04 14:14:15,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 62 transitions, 413 flow [2024-06-04 14:14:15,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 62 transitions, 377 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-04 14:14:15,929 INFO L231 Difference]: Finished difference. Result has 95 places, 43 transitions, 238 flow [2024-06-04 14:14:15,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=238, PETRI_PLACES=95, PETRI_TRANSITIONS=43} [2024-06-04 14:14:15,929 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2024-06-04 14:14:15,929 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 43 transitions, 238 flow [2024-06-04 14:14:15,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:15,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:15,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:15,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-04 14:14:15,929 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:15,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:15,929 INFO L85 PathProgramCache]: Analyzing trace with hash -63399636, now seen corresponding path program 28 times [2024-06-04 14:14:15,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:15,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868668216] [2024-06-04 14:14:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:15,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:17,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:17,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868668216] [2024-06-04 14:14:17,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868668216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:17,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:17,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:14:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694579924] [2024-06-04 14:14:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:17,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:14:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:14:17,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:14:18,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:18,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 43 transitions, 238 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:14:18,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:18,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:18,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:18,420 INFO L124 PetriNetUnfolderBase]: 112/238 cut-off events. [2024-06-04 14:14:18,421 INFO L125 PetriNetUnfolderBase]: For 4384/4384 co-relation queries the response was YES. [2024-06-04 14:14:18,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 238 events. 112/238 cut-off events. For 4384/4384 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 793 event pairs, 29 based on Foata normal form. 6/243 useless extension candidates. Maximal degree in co-relation 786. Up to 138 conditions per place. [2024-06-04 14:14:18,421 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 34 selfloop transitions, 11 changer transitions 14/61 dead transitions. [2024-06-04 14:14:18,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 61 transitions, 394 flow [2024-06-04 14:14:18,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:18,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-04 14:14:18,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2024-06-04 14:14:18,422 INFO L175 Difference]: Start difference. First operand has 95 places, 43 transitions, 238 flow. Second operand 12 states and 110 transitions. [2024-06-04 14:14:18,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 61 transitions, 394 flow [2024-06-04 14:14:18,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 61 transitions, 362 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:14:18,426 INFO L231 Difference]: Finished difference. Result has 92 places, 39 transitions, 213 flow [2024-06-04 14:14:18,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=213, PETRI_PLACES=92, PETRI_TRANSITIONS=39} [2024-06-04 14:14:18,426 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 60 predicate places. [2024-06-04 14:14:18,426 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 39 transitions, 213 flow [2024-06-04 14:14:18,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:14:18,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:18,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:18,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-04 14:14:18,427 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:18,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash -501897632, now seen corresponding path program 29 times [2024-06-04 14:14:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:18,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269903028] [2024-06-04 14:14:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:18,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:20,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:20,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269903028] [2024-06-04 14:14:20,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269903028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:20,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:20,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:20,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860664582] [2024-06-04 14:14:20,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:20,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:20,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:20,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:20,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:21,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:21,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 39 transitions, 213 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:21,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:21,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:21,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:21,291 INFO L124 PetriNetUnfolderBase]: 98/212 cut-off events. [2024-06-04 14:14:21,291 INFO L125 PetriNetUnfolderBase]: For 3754/3754 co-relation queries the response was YES. [2024-06-04 14:14:21,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 212 events. 98/212 cut-off events. For 3754/3754 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 659 event pairs, 25 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 700. Up to 112 conditions per place. [2024-06-04 14:14:21,292 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 28 selfloop transitions, 8 changer transitions 19/57 dead transitions. [2024-06-04 14:14:21,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 57 transitions, 361 flow [2024-06-04 14:14:21,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-04 14:14:21,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27525252525252525 [2024-06-04 14:14:21,293 INFO L175 Difference]: Start difference. First operand has 92 places, 39 transitions, 213 flow. Second operand 12 states and 109 transitions. [2024-06-04 14:14:21,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 57 transitions, 361 flow [2024-06-04 14:14:21,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 57 transitions, 331 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:14:21,296 INFO L231 Difference]: Finished difference. Result has 86 places, 33 transitions, 174 flow [2024-06-04 14:14:21,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=174, PETRI_PLACES=86, PETRI_TRANSITIONS=33} [2024-06-04 14:14:21,296 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2024-06-04 14:14:21,296 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 33 transitions, 174 flow [2024-06-04 14:14:21,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:21,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:21,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:21,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-04 14:14:21,297 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:21,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:21,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1333706964, now seen corresponding path program 30 times [2024-06-04 14:14:21,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:21,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070887946] [2024-06-04 14:14:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:21,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:23,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:23,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070887946] [2024-06-04 14:14:23,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070887946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:23,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:23,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:23,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214532404] [2024-06-04 14:14:23,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:23,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:23,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:23,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:23,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:23,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 33 transitions, 174 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:23,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:23,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:23,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:23,949 INFO L124 PetriNetUnfolderBase]: 78/172 cut-off events. [2024-06-04 14:14:23,949 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-04 14:14:23,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 172 events. 78/172 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 491 event pairs, 23 based on Foata normal form. 6/177 useless extension candidates. Maximal degree in co-relation 570. Up to 94 conditions per place. [2024-06-04 14:14:23,950 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 25 selfloop transitions, 8 changer transitions 14/49 dead transitions. [2024-06-04 14:14:23,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 49 transitions, 302 flow [2024-06-04 14:14:23,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-06-04 14:14:23,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26515151515151514 [2024-06-04 14:14:23,950 INFO L175 Difference]: Start difference. First operand has 86 places, 33 transitions, 174 flow. Second operand 12 states and 105 transitions. [2024-06-04 14:14:23,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 49 transitions, 302 flow [2024-06-04 14:14:23,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 49 transitions, 272 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 14:14:23,952 INFO L231 Difference]: Finished difference. Result has 75 places, 29 transitions, 145 flow [2024-06-04 14:14:23,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=145, PETRI_PLACES=75, PETRI_TRANSITIONS=29} [2024-06-04 14:14:23,953 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 43 predicate places. [2024-06-04 14:14:23,953 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 29 transitions, 145 flow [2024-06-04 14:14:23,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:23,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:23,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:23,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-04 14:14:23,953 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:23,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:23,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1338175614, now seen corresponding path program 31 times [2024-06-04 14:14:23,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:23,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698241187] [2024-06-04 14:14:23,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:23,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:25,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:25,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698241187] [2024-06-04 14:14:25,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698241187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:25,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:25,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:14:25,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091036719] [2024-06-04 14:14:25,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:25,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:14:25,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:25,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:14:25,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:14:26,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:26,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 29 transitions, 145 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:26,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:26,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:26,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:26,252 INFO L124 PetriNetUnfolderBase]: 64/146 cut-off events. [2024-06-04 14:14:26,252 INFO L125 PetriNetUnfolderBase]: For 1728/1728 co-relation queries the response was YES. [2024-06-04 14:14:26,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 146 events. 64/146 cut-off events. For 1728/1728 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 369 event pairs, 19 based on Foata normal form. 6/151 useless extension candidates. Maximal degree in co-relation 470. Up to 68 conditions per place. [2024-06-04 14:14:26,253 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 20 selfloop transitions, 6 changer transitions 17/45 dead transitions. [2024-06-04 14:14:26,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 45 transitions, 265 flow [2024-06-04 14:14:26,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:26,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2024-06-04 14:14:26,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26262626262626265 [2024-06-04 14:14:26,254 INFO L175 Difference]: Start difference. First operand has 75 places, 29 transitions, 145 flow. Second operand 12 states and 104 transitions. [2024-06-04 14:14:26,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 45 transitions, 265 flow [2024-06-04 14:14:26,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 45 transitions, 241 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:14:26,255 INFO L231 Difference]: Finished difference. Result has 69 places, 24 transitions, 114 flow [2024-06-04 14:14:26,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=114, PETRI_PLACES=69, PETRI_TRANSITIONS=24} [2024-06-04 14:14:26,255 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2024-06-04 14:14:26,255 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 24 transitions, 114 flow [2024-06-04 14:14:26,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:14:26,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:14:26,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:26,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-04 14:14:26,256 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:14:26,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:14:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1448998134, now seen corresponding path program 32 times [2024-06-04 14:14:26,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:14:26,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617698554] [2024-06-04 14:14:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:14:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:14:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:14:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:14:28,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:14:28,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617698554] [2024-06-04 14:14:28,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617698554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:14:28,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:14:28,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-04 14:14:28,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383501235] [2024-06-04 14:14:28,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:14:28,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-04 14:14:28,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:14:28,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-04 14:14:28,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-04 14:14:28,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-04 14:14:28,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 24 transitions, 114 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:14:28,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:14:28,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-04 14:14:28,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:14:28,668 INFO L124 PetriNetUnfolderBase]: 31/79 cut-off events. [2024-06-04 14:14:28,669 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2024-06-04 14:14:28,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 79 events. 31/79 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 6/84 useless extension candidates. Maximal degree in co-relation 202. Up to 24 conditions per place. [2024-06-04 14:14:28,669 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2024-06-04 14:14:28,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 35 transitions, 174 flow [2024-06-04 14:14:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:14:28,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:14:28,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 94 transitions. [2024-06-04 14:14:28,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23737373737373738 [2024-06-04 14:14:28,669 INFO L175 Difference]: Start difference. First operand has 69 places, 24 transitions, 114 flow. Second operand 12 states and 94 transitions. [2024-06-04 14:14:28,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 35 transitions, 174 flow [2024-06-04 14:14:28,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 35 transitions, 142 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-04 14:14:28,670 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-06-04 14:14:28,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-06-04 14:14:28,670 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2024-06-04 14:14:28,670 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-06-04 14:14:28,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 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) [2024-06-04 14:14:28,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 14:14:28,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 14:14:28,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 14:14:28,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 14:14:28,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-04 14:14:28,674 INFO L445 BasicCegarLoop]: Path program histogram: [34, 32, 24, 20, 18, 15, 11, 10, 6, 6, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:14:28,676 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 14:14:28,676 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 14:14:28,680 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 14:14:28,680 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 14:14:28,681 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 02:14:28 BasicIcfg [2024-06-04 14:14:28,681 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 14:14:28,681 INFO L158 Benchmark]: Toolchain (without parser) took 517212.19ms. Allocated memory was 161.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 98.4MB in the beginning and 931.9MB in the end (delta: -833.6MB). Peak memory consumption was 496.2MB. Max. memory is 16.1GB. [2024-06-04 14:14:28,681 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 161.5MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:14:28,681 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 161.5MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:14:28,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.19ms. Allocated memory is still 161.5MB. Free memory was 98.4MB in the beginning and 61.1MB in the end (delta: 37.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-06-04 14:14:28,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.66ms. Allocated memory is still 161.5MB. Free memory was 61.1MB in the beginning and 57.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 14:14:28,682 INFO L158 Benchmark]: Boogie Preprocessor took 60.99ms. Allocated memory is still 161.5MB. Free memory was 57.9MB in the beginning and 53.4MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 14:14:28,682 INFO L158 Benchmark]: RCFGBuilder took 777.69ms. Allocated memory is still 161.5MB. Free memory was 53.4MB in the beginning and 65.4MB in the end (delta: -12.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-04 14:14:28,682 INFO L158 Benchmark]: TraceAbstraction took 515739.68ms. Allocated memory was 161.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 65.4MB in the beginning and 931.9MB in the end (delta: -866.5MB). Peak memory consumption was 462.8MB. Max. memory is 16.1GB. [2024-06-04 14:14:28,683 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 161.5MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 161.5MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 566.19ms. Allocated memory is still 161.5MB. Free memory was 98.4MB in the beginning and 61.1MB in the end (delta: 37.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.66ms. Allocated memory is still 161.5MB. Free memory was 61.1MB in the beginning and 57.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.99ms. Allocated memory is still 161.5MB. Free memory was 57.9MB in the beginning and 53.4MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 777.69ms. Allocated memory is still 161.5MB. Free memory was 53.4MB in the beginning and 65.4MB in the end (delta: -12.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 515739.68ms. Allocated memory was 161.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 65.4MB in the beginning and 931.9MB in the end (delta: -866.5MB). Peak memory consumption was 462.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 839]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 840]: 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, 53 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: 515.7s, OverallIterations: 218, TraceHistogramMax: 1, PathProgramHistogramMax: 34, EmptinessCheckTime: 0.0s, AutomataDifference: 186.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12622 SdHoareTripleChecker+Valid, 67.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10978 mSDsluCounter, 7287 SdHoareTripleChecker+Invalid, 58.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6629 mSDsCounter, 5129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108435 IncrementalHoareTripleChecker+Invalid, 113564 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5129 mSolverCounterUnsat, 658 mSDtfsCounter, 108435 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2860 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2805 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8275 ImplicationChecksByTransitivity, 76.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2508occurred in iteration=117, InterpolantAutomatonStates: 2218, 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: 0.3s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 324.5s InterpolantComputationTime, 4018 NumberOfCodeBlocks, 4018 NumberOfCodeBlocksAsserted, 218 NumberOfCheckSat, 3800 ConstructedInterpolants, 0 QuantifiedInterpolants, 170365 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 218 InterpolantComputations, 218 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! [2024-06-04 14:14:28,743 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