./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:32:51,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:32:51,945 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:32:51,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:32:51,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:32:51,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:32:51,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:32:51,977 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:32:51,977 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:32:51,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:32:51,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:32:51,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:32:51,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:32:51,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:32:51,986 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:32:51,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:32:51,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:32:51,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:32:51,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:32:51,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:32:51,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:32:51,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:32:51,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:32:51,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:32:51,989 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:32:51,989 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:32:51,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:32:51,990 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:32:51,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:32:51,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:32:51,992 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:32:51,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:32:51,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:51,992 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:32:51,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:32:51,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:32:51,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:32:51,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:32:51,994 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:32:51,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:32:51,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:32:51,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:32:51,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:32:51,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:32:52,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:32:52,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:32:52,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:32:52,287 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:32:52,288 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:32:52,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-28 01:32:53,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:32:53,662 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:32:53,663 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-28 01:32:53,680 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ad7f869a/fc7b12ded82e40ba8a87f549d51a2451/FLAG3597ba9b3 [2024-06-28 01:32:53,699 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ad7f869a/fc7b12ded82e40ba8a87f549d51a2451 [2024-06-28 01:32:53,701 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:32:53,702 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:32:53,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-28 01:32:53,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:32:53,860 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:32:53,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:53,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:32:53,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:32:53,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:53" (1/2) ... [2024-06-28 01:32:53,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a99eda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:53, skipping insertion in model container [2024-06-28 01:32:53,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:53" (1/2) ... [2024-06-28 01:32:53,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b2d6f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:53, skipping insertion in model container [2024-06-28 01:32:53,869 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:53" (2/2) ... [2024-06-28 01:32:53,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a99eda5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:53, skipping insertion in model container [2024-06-28 01:32:53,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:53" (2/2) ... [2024-06-28 01:32:53,870 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:32:53,945 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:32:53,946 INFO L97 edCorrectnessWitness]: Location invariant before [L820-L820] ((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:32:53,946 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:32:53,946 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:32:53,947 INFO L106 edCorrectnessWitness]: ghost_update [L818-L818] multithreaded = 1; [2024-06-28 01:32:53,999 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:32:54,189 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i[996,1009] [2024-06-28 01:32:54,385 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:54,403 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:32:54,441 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:32:54,516 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:54,560 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:32:54,560 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54 WrapperNode [2024-06-28 01:32:54,560 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:54,561 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:54,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:32:54,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:32:54,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,635 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 111 [2024-06-28 01:32:54,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:54,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:32:54,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:32:54,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:32:54,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,674 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:32:54,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,689 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:32:54,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:32:54,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:32:54,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:32:54,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (1/1) ... [2024-06-28 01:32:54,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:54,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:32:54,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:32:54,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:32:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:32:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:32:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:32:54,784 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:32:54,784 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:32:54,784 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:32:54,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:32:54,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:32:54,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:32:54,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:32:54,786 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:32:54,941 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:32:54,943 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:32:55,249 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:32:55,250 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:32:55,464 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:32:55,465 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:32:55,467 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:55 BoogieIcfgContainer [2024-06-28 01:32:55,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:32:55,471 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:32:55,471 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:32:55,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:32:55,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:32:53" (1/4) ... [2024-06-28 01:32:55,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8f39c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:32:55, skipping insertion in model container [2024-06-28 01:32:55,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:53" (2/4) ... [2024-06-28 01:32:55,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8f39c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:55, skipping insertion in model container [2024-06-28 01:32:55,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:54" (3/4) ... [2024-06-28 01:32:55,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8f39c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:55, skipping insertion in model container [2024-06-28 01:32:55,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:55" (4/4) ... [2024-06-28 01:32:55,485 INFO L112 eAbstractionObserver]: Analyzing ICFG mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-28 01:32:55,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:32:55,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:32:55,501 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:32:55,541 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:32:55,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:32:55,607 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-28 01:32:55,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:55,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-28 01:32:55,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:32:55,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-28 01:32:55,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:32:55,638 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;@612ffab0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:32:55,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:32:55,643 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:32:55,643 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:32:55,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:55,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:55,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:32:55,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:55,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash 315417610, now seen corresponding path program 1 times [2024-06-28 01:32:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:55,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324331888] [2024-06-28 01:32:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:55,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:56,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:56,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324331888] [2024-06-28 01:32:56,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324331888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:56,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:56,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745209276] [2024-06-28 01:32:56,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:56,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:56,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:56,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:56,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:56,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-28 01:32:56,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:56,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:56,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-28 01:32:56,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:56,997 INFO L124 PetriNetUnfolderBase]: 471/933 cut-off events. [2024-06-28 01:32:56,997 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 01:32:57,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 933 events. 471/933 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5179 event pairs, 319 based on Foata normal form. 37/869 useless extension candidates. Maximal degree in co-relation 1728. Up to 779 conditions per place. [2024-06-28 01:32:57,009 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 30 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 01:32:57,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 167 flow [2024-06-28 01:32:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-28 01:32:57,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2024-06-28 01:32:57,023 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 77 transitions. [2024-06-28 01:32:57,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 167 flow [2024-06-28 01:32:57,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:57,028 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-28 01:32:57,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-28 01:32:57,034 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-28 01:32:57,035 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-28 01:32:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:57,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:57,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:32:57,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:32:57,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:57,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:57,037 INFO L85 PathProgramCache]: Analyzing trace with hash 315418578, now seen corresponding path program 1 times [2024-06-28 01:32:57,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:57,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662485526] [2024-06-28 01:32:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:57,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662485526] [2024-06-28 01:32:57,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662485526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:57,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:57,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:57,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298928434] [2024-06-28 01:32:57,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:57,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:57,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:57,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:57,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:57,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-28 01:32:57,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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) [2024-06-28 01:32:57,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:57,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-28 01:32:57,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:57,247 INFO L124 PetriNetUnfolderBase]: 169/402 cut-off events. [2024-06-28 01:32:57,248 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-28 01:32:57,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 402 events. 169/402 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2143 event pairs, 96 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 759. Up to 256 conditions per place. [2024-06-28 01:32:57,252 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 23 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2024-06-28 01:32:57,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 171 flow [2024-06-28 01:32:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:57,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-06-28 01:32:57,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7657657657657657 [2024-06-28 01:32:57,254 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 3 states and 85 transitions. [2024-06-28 01:32:57,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 171 flow [2024-06-28 01:32:57,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:57,258 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 92 flow [2024-06-28 01:32:57,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-28 01:32:57,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-28 01:32:57,260 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 92 flow [2024-06-28 01:32:57,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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) [2024-06-28 01:32:57,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:57,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:57,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:32:57,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:57,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:57,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1825445526, now seen corresponding path program 1 times [2024-06-28 01:32:57,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:57,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212210656] [2024-06-28 01:32:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:57,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:57,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:57,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212210656] [2024-06-28 01:32:57,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212210656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:57,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:57,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:32:57,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557020423] [2024-06-28 01:32:57,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:57,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:32:57,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:57,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:32:57,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:32:57,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-28 01:32:57,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:57,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:57,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-28 01:32:57,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:58,112 INFO L124 PetriNetUnfolderBase]: 327/671 cut-off events. [2024-06-28 01:32:58,112 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-06-28 01:32:58,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 671 events. 327/671 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3505 event pairs, 145 based on Foata normal form. 2/645 useless extension candidates. Maximal degree in co-relation 1386. Up to 537 conditions per place. [2024-06-28 01:32:58,116 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 34 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-06-28 01:32:58,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 218 flow [2024-06-28 01:32:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:32:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:32:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-28 01:32:58,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-28 01:32:58,118 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 92 flow. Second operand 4 states and 92 transitions. [2024-06-28 01:32:58,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 218 flow [2024-06-28 01:32:58,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:58,120 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 135 flow [2024-06-28 01:32:58,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-28 01:32:58,121 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-28 01:32:58,122 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 135 flow [2024-06-28 01:32:58,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:58,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:58,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:58,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:32:58,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:58,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:58,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1906475223, now seen corresponding path program 1 times [2024-06-28 01:32:58,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:58,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050709765] [2024-06-28 01:32:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:59,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:59,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050709765] [2024-06-28 01:32:59,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050709765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:59,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:59,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:59,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426945482] [2024-06-28 01:32:59,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:59,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:59,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:59,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:59,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:59,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:32:59,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:59,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:59,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:32:59,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:59,442 INFO L124 PetriNetUnfolderBase]: 399/806 cut-off events. [2024-06-28 01:32:59,442 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2024-06-28 01:32:59,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 806 events. 399/806 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4271 event pairs, 169 based on Foata normal form. 2/775 useless extension candidates. Maximal degree in co-relation 1805. Up to 613 conditions per place. [2024-06-28 01:32:59,448 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 49 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2024-06-28 01:32:59,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 73 transitions, 362 flow [2024-06-28 01:32:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 01:32:59,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-06-28 01:32:59,450 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 135 flow. Second operand 6 states and 132 transitions. [2024-06-28 01:32:59,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 73 transitions, 362 flow [2024-06-28 01:32:59,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 352 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:59,454 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 212 flow [2024-06-28 01:32:59,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-06-28 01:32:59,455 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-28 01:32:59,455 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 212 flow [2024-06-28 01:32:59,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:59,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:59,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:59,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:32:59,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:59,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash 173504216, now seen corresponding path program 1 times [2024-06-28 01:32:59,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:59,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68098920] [2024-06-28 01:32:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:59,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:00,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:00,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68098920] [2024-06-28 01:33:00,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68098920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:00,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:00,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:00,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555894057] [2024-06-28 01:33:00,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:00,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:00,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:00,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:00,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:00,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:33:00,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:00,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:00,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:33:00,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:00,946 INFO L124 PetriNetUnfolderBase]: 395/721 cut-off events. [2024-06-28 01:33:00,947 INFO L125 PetriNetUnfolderBase]: For 642/642 co-relation queries the response was YES. [2024-06-28 01:33:00,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 721 events. 395/721 cut-off events. For 642/642 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3546 event pairs, 40 based on Foata normal form. 4/712 useless extension candidates. Maximal degree in co-relation 1929. Up to 575 conditions per place. [2024-06-28 01:33:00,953 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 52 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2024-06-28 01:33:00,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 418 flow [2024-06-28 01:33:00,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-28 01:33:00,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 01:33:00,955 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 212 flow. Second operand 7 states and 148 transitions. [2024-06-28 01:33:00,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 418 flow [2024-06-28 01:33:00,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 405 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:00,959 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 225 flow [2024-06-28 01:33:00,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-28 01:33:00,960 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-06-28 01:33:00,960 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 225 flow [2024-06-28 01:33:00,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:00,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:00,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:00,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:33:00,961 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:00,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash 42367208, now seen corresponding path program 1 times [2024-06-28 01:33:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:00,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608933900] [2024-06-28 01:33:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:00,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:01,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:01,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608933900] [2024-06-28 01:33:01,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608933900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:01,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:01,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:33:01,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309734457] [2024-06-28 01:33:01,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:01,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:33:01,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:01,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:33:01,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:33:01,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:01,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:01,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:01,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:01,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:01,907 INFO L124 PetriNetUnfolderBase]: 464/922 cut-off events. [2024-06-28 01:33:01,907 INFO L125 PetriNetUnfolderBase]: For 918/918 co-relation queries the response was YES. [2024-06-28 01:33:01,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 922 events. 464/922 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4930 event pairs, 147 based on Foata normal form. 1/892 useless extension candidates. Maximal degree in co-relation 2407. Up to 754 conditions per place. [2024-06-28 01:33:01,914 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 43 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2024-06-28 01:33:01,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 361 flow [2024-06-28 01:33:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:33:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:33:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-28 01:33:01,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-28 01:33:01,916 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 225 flow. Second operand 5 states and 91 transitions. [2024-06-28 01:33:01,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 361 flow [2024-06-28 01:33:01,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 318 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:01,920 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 214 flow [2024-06-28 01:33:01,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 01:33:01,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-28 01:33:01,921 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 214 flow [2024-06-28 01:33:01,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:01,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:01,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:01,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:33:01,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:01,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:01,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1313384271, now seen corresponding path program 1 times [2024-06-28 01:33:01,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:01,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35340400] [2024-06-28 01:33:01,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:01,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:02,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:02,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35340400] [2024-06-28 01:33:02,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35340400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:02,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:02,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:02,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107751752] [2024-06-28 01:33:02,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:02,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:02,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:02,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:02,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:02,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:02,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:02,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:02,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:02,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:02,985 INFO L124 PetriNetUnfolderBase]: 533/1031 cut-off events. [2024-06-28 01:33:02,985 INFO L125 PetriNetUnfolderBase]: For 1189/1189 co-relation queries the response was YES. [2024-06-28 01:33:02,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2720 conditions, 1031 events. 533/1031 cut-off events. For 1189/1189 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5458 event pairs, 169 based on Foata normal form. 1/995 useless extension candidates. Maximal degree in co-relation 2697. Up to 853 conditions per place. [2024-06-28 01:33:02,992 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 49 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-06-28 01:33:02,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 380 flow [2024-06-28 01:33:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:02,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:02,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-28 01:33:02,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-28 01:33:02,994 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 214 flow. Second operand 6 states and 103 transitions. [2024-06-28 01:33:02,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 380 flow [2024-06-28 01:33:02,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 366 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:02,997 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 237 flow [2024-06-28 01:33:02,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-28 01:33:02,998 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2024-06-28 01:33:02,998 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 237 flow [2024-06-28 01:33:02,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:02,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:02,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:02,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:33:02,999 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:02,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:03,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1265307772, now seen corresponding path program 1 times [2024-06-28 01:33:03,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:03,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503376765] [2024-06-28 01:33:03,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:03,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:03,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:03,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503376765] [2024-06-28 01:33:03,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503376765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:03,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:03,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:03,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970630848] [2024-06-28 01:33:03,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:03,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:03,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:03,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:03,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:03,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:03,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 237 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:03,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:03,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:03,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:03,993 INFO L124 PetriNetUnfolderBase]: 497/960 cut-off events. [2024-06-28 01:33:03,993 INFO L125 PetriNetUnfolderBase]: For 1508/1508 co-relation queries the response was YES. [2024-06-28 01:33:03,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2702 conditions, 960 events. 497/960 cut-off events. For 1508/1508 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5044 event pairs, 121 based on Foata normal form. 1/929 useless extension candidates. Maximal degree in co-relation 2678. Up to 770 conditions per place. [2024-06-28 01:33:03,999 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 55 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-06-28 01:33:03,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 472 flow [2024-06-28 01:33:04,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:04,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 01:33:04,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509009009009009 [2024-06-28 01:33:04,001 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 237 flow. Second operand 6 states and 113 transitions. [2024-06-28 01:33:04,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 472 flow [2024-06-28 01:33:04,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 448 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:04,005 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 307 flow [2024-06-28 01:33:04,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-28 01:33:04,008 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-28 01:33:04,008 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 307 flow [2024-06-28 01:33:04,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:04,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:04,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:04,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:33:04,009 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:04,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:04,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1232897272, now seen corresponding path program 2 times [2024-06-28 01:33:04,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:04,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357938402] [2024-06-28 01:33:04,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:04,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:04,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357938402] [2024-06-28 01:33:04,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357938402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:04,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:04,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:04,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567074583] [2024-06-28 01:33:04,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:04,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:04,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:04,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:04,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:04,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:04,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:04,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:04,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:04,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:04,979 INFO L124 PetriNetUnfolderBase]: 504/988 cut-off events. [2024-06-28 01:33:04,979 INFO L125 PetriNetUnfolderBase]: For 1989/1989 co-relation queries the response was YES. [2024-06-28 01:33:04,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2960 conditions, 988 events. 504/988 cut-off events. For 1989/1989 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5300 event pairs, 160 based on Foata normal form. 1/957 useless extension candidates. Maximal degree in co-relation 2933. Up to 808 conditions per place. [2024-06-28 01:33:04,986 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 52 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2024-06-28 01:33:04,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 465 flow [2024-06-28 01:33:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 01:33:04,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:33:04,987 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 307 flow. Second operand 6 states and 106 transitions. [2024-06-28 01:33:04,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 465 flow [2024-06-28 01:33:04,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 71 transitions, 457 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:04,993 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 324 flow [2024-06-28 01:33:04,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-06-28 01:33:04,994 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-28 01:33:04,994 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 324 flow [2024-06-28 01:33:04,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:04,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:04,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:04,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:33:04,995 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:04,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2060207591, now seen corresponding path program 1 times [2024-06-28 01:33:04,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:05,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332551491] [2024-06-28 01:33:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:05,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:05,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:05,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332551491] [2024-06-28 01:33:05,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332551491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:05,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:05,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:05,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141184345] [2024-06-28 01:33:05,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:05,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:05,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:05,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:05,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:05,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:05,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-28 01:33:05,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:05,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:05,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:06,274 INFO L124 PetriNetUnfolderBase]: 539/1010 cut-off events. [2024-06-28 01:33:06,275 INFO L125 PetriNetUnfolderBase]: For 2354/2354 co-relation queries the response was YES. [2024-06-28 01:33:06,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 1010 events. 539/1010 cut-off events. For 2354/2354 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5258 event pairs, 161 based on Foata normal form. 3/983 useless extension candidates. Maximal degree in co-relation 3095. Up to 830 conditions per place. [2024-06-28 01:33:06,282 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 61 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2024-06-28 01:33:06,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 82 transitions, 540 flow [2024-06-28 01:33:06,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 01:33:06,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671814671814672 [2024-06-28 01:33:06,284 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 324 flow. Second operand 7 states and 121 transitions. [2024-06-28 01:33:06,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 82 transitions, 540 flow [2024-06-28 01:33:06,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 517 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:06,291 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 348 flow [2024-06-28 01:33:06,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=348, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-06-28 01:33:06,292 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-28 01:33:06,293 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 348 flow [2024-06-28 01:33:06,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-28 01:33:06,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:06,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:06,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:33:06,294 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:06,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:06,294 INFO L85 PathProgramCache]: Analyzing trace with hash -764084819, now seen corresponding path program 1 times [2024-06-28 01:33:06,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:06,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421461560] [2024-06-28 01:33:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:06,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:07,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:07,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421461560] [2024-06-28 01:33:07,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421461560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:07,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:07,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:07,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013222029] [2024-06-28 01:33:07,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:07,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:07,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:07,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:07,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:07,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:07,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 348 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:07,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:07,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:07,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:07,650 INFO L124 PetriNetUnfolderBase]: 500/964 cut-off events. [2024-06-28 01:33:07,651 INFO L125 PetriNetUnfolderBase]: For 2561/2563 co-relation queries the response was YES. [2024-06-28 01:33:07,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3130 conditions, 964 events. 500/964 cut-off events. For 2561/2563 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5054 event pairs, 113 based on Foata normal form. 3/935 useless extension candidates. Maximal degree in co-relation 3100. Up to 775 conditions per place. [2024-06-28 01:33:07,657 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 68 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2024-06-28 01:33:07,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 88 transitions, 590 flow [2024-06-28 01:33:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 01:33:07,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-28 01:33:07,659 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 348 flow. Second operand 7 states and 130 transitions. [2024-06-28 01:33:07,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 88 transitions, 590 flow [2024-06-28 01:33:07,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 88 transitions, 559 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:07,665 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 360 flow [2024-06-28 01:33:07,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-06-28 01:33:07,665 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-28 01:33:07,666 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 360 flow [2024-06-28 01:33:07,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:07,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:07,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:07,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:33:07,667 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:07,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:07,667 INFO L85 PathProgramCache]: Analyzing trace with hash -764080169, now seen corresponding path program 2 times [2024-06-28 01:33:07,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:07,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421331605] [2024-06-28 01:33:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:07,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:08,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:08,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421331605] [2024-06-28 01:33:08,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421331605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:08,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:08,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3669512] [2024-06-28 01:33:08,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:08,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:08,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:08,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:08,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:08,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:08,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 360 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:08,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:08,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:08,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:08,690 INFO L124 PetriNetUnfolderBase]: 514/989 cut-off events. [2024-06-28 01:33:08,691 INFO L125 PetriNetUnfolderBase]: For 3012/3014 co-relation queries the response was YES. [2024-06-28 01:33:08,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 989 events. 514/989 cut-off events. For 3012/3014 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5213 event pairs, 119 based on Foata normal form. 3/960 useless extension candidates. Maximal degree in co-relation 3262. Up to 747 conditions per place. [2024-06-28 01:33:08,698 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 62 selfloop transitions, 19 changer transitions 0/90 dead transitions. [2024-06-28 01:33:08,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 640 flow [2024-06-28 01:33:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 01:33:08,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2024-06-28 01:33:08,700 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 360 flow. Second operand 7 states and 132 transitions. [2024-06-28 01:33:08,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 640 flow [2024-06-28 01:33:08,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 609 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:08,707 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 408 flow [2024-06-28 01:33:08,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-06-28 01:33:08,707 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2024-06-28 01:33:08,708 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 408 flow [2024-06-28 01:33:08,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:08,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:08,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:08,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:33:08,709 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:08,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash -764079983, now seen corresponding path program 1 times [2024-06-28 01:33:08,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:08,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883135099] [2024-06-28 01:33:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:08,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:09,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:09,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883135099] [2024-06-28 01:33:09,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883135099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:09,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:09,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:09,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860124661] [2024-06-28 01:33:09,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:09,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:09,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:09,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:09,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 408 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-28 01:33:09,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:09,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:09,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:09,765 INFO L124 PetriNetUnfolderBase]: 578/1087 cut-off events. [2024-06-28 01:33:09,765 INFO L125 PetriNetUnfolderBase]: For 3702/3702 co-relation queries the response was YES. [2024-06-28 01:33:09,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 1087 events. 578/1087 cut-off events. For 3702/3702 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5729 event pairs, 131 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 3682. Up to 872 conditions per place. [2024-06-28 01:33:09,773 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 72 selfloop transitions, 18 changer transitions 0/97 dead transitions. [2024-06-28 01:33:09,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 712 flow [2024-06-28 01:33:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 01:33:09,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:33:09,775 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 408 flow. Second operand 7 states and 126 transitions. [2024-06-28 01:33:09,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 712 flow [2024-06-28 01:33:09,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 686 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:09,787 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 477 flow [2024-06-28 01:33:09,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2024-06-28 01:33:09,788 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-06-28 01:33:09,788 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 477 flow [2024-06-28 01:33:09,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-28 01:33:09,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:09,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:09,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:33:09,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:09,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:09,789 INFO L85 PathProgramCache]: Analyzing trace with hash 435157035, now seen corresponding path program 2 times [2024-06-28 01:33:09,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:09,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367609872] [2024-06-28 01:33:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:09,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:10,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:10,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367609872] [2024-06-28 01:33:10,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367609872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:10,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:10,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:10,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734040848] [2024-06-28 01:33:10,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:10,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:10,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:10,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:10,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:10,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:10,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 477 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-28 01:33:10,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:10,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:10,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:10,868 INFO L124 PetriNetUnfolderBase]: 589/1140 cut-off events. [2024-06-28 01:33:10,868 INFO L125 PetriNetUnfolderBase]: For 4459/4459 co-relation queries the response was YES. [2024-06-28 01:33:10,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4045 conditions, 1140 events. 589/1140 cut-off events. For 4459/4459 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6161 event pairs, 174 based on Foata normal form. 1/1099 useless extension candidates. Maximal degree in co-relation 4010. Up to 942 conditions per place. [2024-06-28 01:33:10,877 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 71 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-06-28 01:33:10,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 91 transitions, 701 flow [2024-06-28 01:33:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:10,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 01:33:10,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44787644787644787 [2024-06-28 01:33:10,879 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 477 flow. Second operand 7 states and 116 transitions. [2024-06-28 01:33:10,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 91 transitions, 701 flow [2024-06-28 01:33:10,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 690 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:10,887 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 515 flow [2024-06-28 01:33:10,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=77, 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=7, PETRI_FLOW=515, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-28 01:33:10,888 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-06-28 01:33:10,888 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 515 flow [2024-06-28 01:33:10,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-28 01:33:10,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:10,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:10,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:33:10,889 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:10,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:10,890 INFO L85 PathProgramCache]: Analyzing trace with hash -558349103, now seen corresponding path program 3 times [2024-06-28 01:33:10,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:10,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135019229] [2024-06-28 01:33:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:10,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:11,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:11,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135019229] [2024-06-28 01:33:11,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135019229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:11,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:11,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:11,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588980838] [2024-06-28 01:33:11,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:11,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:11,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:11,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:11,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:11,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:11,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 515 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-28 01:33:11,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:11,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:11,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:12,029 INFO L124 PetriNetUnfolderBase]: 587/1147 cut-off events. [2024-06-28 01:33:12,030 INFO L125 PetriNetUnfolderBase]: For 5144/5144 co-relation queries the response was YES. [2024-06-28 01:33:12,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4112 conditions, 1147 events. 587/1147 cut-off events. For 5144/5144 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6251 event pairs, 298 based on Foata normal form. 1/1106 useless extension candidates. Maximal degree in co-relation 4074. Up to 919 conditions per place. [2024-06-28 01:33:12,039 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 69 selfloop transitions, 18 changer transitions 0/94 dead transitions. [2024-06-28 01:33:12,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 94 transitions, 759 flow [2024-06-28 01:33:12,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:12,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 01:33:12,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358108108108108 [2024-06-28 01:33:12,041 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 515 flow. Second operand 8 states and 129 transitions. [2024-06-28 01:33:12,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 94 transitions, 759 flow [2024-06-28 01:33:12,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 94 transitions, 717 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:12,054 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 539 flow [2024-06-28 01:33:12,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=539, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-06-28 01:33:12,055 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-06-28 01:33:12,056 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 539 flow [2024-06-28 01:33:12,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-28 01:33:12,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:12,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:12,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:33:12,057 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:12,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:12,058 INFO L85 PathProgramCache]: Analyzing trace with hash -558349289, now seen corresponding path program 3 times [2024-06-28 01:33:12,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:12,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110506512] [2024-06-28 01:33:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:12,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:12,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:12,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110506512] [2024-06-28 01:33:12,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110506512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:12,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:12,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:12,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28380109] [2024-06-28 01:33:12,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:12,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:12,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:12,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:12,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:12,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:12,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 539 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:12,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:12,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:12,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:13,185 INFO L124 PetriNetUnfolderBase]: 547/1086 cut-off events. [2024-06-28 01:33:13,186 INFO L125 PetriNetUnfolderBase]: For 5430/5430 co-relation queries the response was YES. [2024-06-28 01:33:13,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3942 conditions, 1086 events. 547/1086 cut-off events. For 5430/5430 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5983 event pairs, 272 based on Foata normal form. 1/1050 useless extension candidates. Maximal degree in co-relation 3903. Up to 855 conditions per place. [2024-06-28 01:33:13,194 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 68 selfloop transitions, 13 changer transitions 0/94 dead transitions. [2024-06-28 01:33:13,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 751 flow [2024-06-28 01:33:13,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:13,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:13,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 01:33:13,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-28 01:33:13,198 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 539 flow. Second operand 7 states and 123 transitions. [2024-06-28 01:33:13,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 751 flow [2024-06-28 01:33:13,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 94 transitions, 695 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:13,211 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 514 flow [2024-06-28 01:33:13,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=514, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2024-06-28 01:33:13,212 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-06-28 01:33:13,212 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 514 flow [2024-06-28 01:33:13,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:13,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:13,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:13,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:33:13,213 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:13,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:13,214 INFO L85 PathProgramCache]: Analyzing trace with hash 676882905, now seen corresponding path program 1 times [2024-06-28 01:33:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609521075] [2024-06-28 01:33:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:13,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:14,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:14,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609521075] [2024-06-28 01:33:14,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609521075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:14,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:14,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:14,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747943392] [2024-06-28 01:33:14,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:14,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:14,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:14,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:14,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 514 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:14,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:14,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:14,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:14,746 INFO L124 PetriNetUnfolderBase]: 614/1210 cut-off events. [2024-06-28 01:33:14,747 INFO L125 PetriNetUnfolderBase]: For 5956/5958 co-relation queries the response was YES. [2024-06-28 01:33:14,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4344 conditions, 1210 events. 614/1210 cut-off events. For 5956/5958 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6798 event pairs, 184 based on Foata normal form. 3/1169 useless extension candidates. Maximal degree in co-relation 4304. Up to 895 conditions per place. [2024-06-28 01:33:14,755 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 99 selfloop transitions, 30 changer transitions 0/142 dead transitions. [2024-06-28 01:33:14,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 142 transitions, 1057 flow [2024-06-28 01:33:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:33:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:33:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-06-28 01:33:14,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-28 01:33:14,757 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 514 flow. Second operand 12 states and 213 transitions. [2024-06-28 01:33:14,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 142 transitions, 1057 flow [2024-06-28 01:33:14,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 142 transitions, 1014 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:14,769 INFO L231 Difference]: Finished difference. Result has 99 places, 100 transitions, 750 flow [2024-06-28 01:33:14,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=750, PETRI_PLACES=99, PETRI_TRANSITIONS=100} [2024-06-28 01:33:14,770 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2024-06-28 01:33:14,770 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 750 flow [2024-06-28 01:33:14,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:14,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:14,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:14,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:33:14,771 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:14,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:14,771 INFO L85 PathProgramCache]: Analyzing trace with hash 148782407, now seen corresponding path program 2 times [2024-06-28 01:33:14,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:14,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416183511] [2024-06-28 01:33:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:14,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:15,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:15,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416183511] [2024-06-28 01:33:15,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416183511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:15,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:15,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565636952] [2024-06-28 01:33:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:15,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:15,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:15,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:15,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:15,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:15,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 750 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:15,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:15,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:15,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:16,378 INFO L124 PetriNetUnfolderBase]: 712/1404 cut-off events. [2024-06-28 01:33:16,378 INFO L125 PetriNetUnfolderBase]: For 8231/8231 co-relation queries the response was YES. [2024-06-28 01:33:16,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 1404 events. 712/1404 cut-off events. For 8231/8231 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8234 event pairs, 236 based on Foata normal form. 1/1354 useless extension candidates. Maximal degree in co-relation 5677. Up to 1009 conditions per place. [2024-06-28 01:33:16,390 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 112 selfloop transitions, 45 changer transitions 0/170 dead transitions. [2024-06-28 01:33:16,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 170 transitions, 1542 flow [2024-06-28 01:33:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:16,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:33:16,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-28 01:33:16,392 INFO L175 Difference]: Start difference. First operand has 99 places, 100 transitions, 750 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:33:16,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 170 transitions, 1542 flow [2024-06-28 01:33:16,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 170 transitions, 1461 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:16,413 INFO L231 Difference]: Finished difference. Result has 112 places, 133 transitions, 1188 flow [2024-06-28 01:33:16,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1188, PETRI_PLACES=112, PETRI_TRANSITIONS=133} [2024-06-28 01:33:16,414 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-28 01:33:16,414 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 133 transitions, 1188 flow [2024-06-28 01:33:16,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:16,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:16,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:16,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:33:16,415 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:16,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:16,415 INFO L85 PathProgramCache]: Analyzing trace with hash -183180917, now seen corresponding path program 3 times [2024-06-28 01:33:16,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:16,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121586821] [2024-06-28 01:33:16,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:16,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:16,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121586821] [2024-06-28 01:33:16,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121586821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:16,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:16,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:16,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301357374] [2024-06-28 01:33:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:16,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:16,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:16,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:16,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:17,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:17,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 133 transitions, 1188 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:17,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:17,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:17,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:17,594 INFO L124 PetriNetUnfolderBase]: 786/1547 cut-off events. [2024-06-28 01:33:17,594 INFO L125 PetriNetUnfolderBase]: For 11192/11194 co-relation queries the response was YES. [2024-06-28 01:33:17,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6906 conditions, 1547 events. 786/1547 cut-off events. For 11192/11194 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9309 event pairs, 228 based on Foata normal form. 1/1489 useless extension candidates. Maximal degree in co-relation 6854. Up to 975 conditions per place. [2024-06-28 01:33:17,605 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 104 selfloop transitions, 71 changer transitions 0/188 dead transitions. [2024-06-28 01:33:17,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 188 transitions, 1925 flow [2024-06-28 01:33:17,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:33:17,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-28 01:33:17,607 INFO L175 Difference]: Start difference. First operand has 112 places, 133 transitions, 1188 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:33:17,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 188 transitions, 1925 flow [2024-06-28 01:33:17,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 188 transitions, 1853 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:17,642 INFO L231 Difference]: Finished difference. Result has 121 places, 150 transitions, 1499 flow [2024-06-28 01:33:17,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1499, PETRI_PLACES=121, PETRI_TRANSITIONS=150} [2024-06-28 01:33:17,642 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-06-28 01:33:17,643 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 150 transitions, 1499 flow [2024-06-28 01:33:17,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:17,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:17,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:17,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:33:17,643 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:17,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:17,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1012151780, now seen corresponding path program 1 times [2024-06-28 01:33:17,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:17,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121963364] [2024-06-28 01:33:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:17,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:18,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:18,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121963364] [2024-06-28 01:33:18,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121963364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:18,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:18,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:18,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330082816] [2024-06-28 01:33:18,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:18,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:18,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:18,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:18,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:18,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:18,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 150 transitions, 1499 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:18,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:18,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:18,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:18,895 INFO L124 PetriNetUnfolderBase]: 840/1655 cut-off events. [2024-06-28 01:33:18,896 INFO L125 PetriNetUnfolderBase]: For 13573/13573 co-relation queries the response was YES. [2024-06-28 01:33:18,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7758 conditions, 1655 events. 840/1655 cut-off events. For 13573/13573 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10027 event pairs, 256 based on Foata normal form. 1/1589 useless extension candidates. Maximal degree in co-relation 7703. Up to 1234 conditions per place. [2024-06-28 01:33:18,911 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 144 selfloop transitions, 43 changer transitions 0/194 dead transitions. [2024-06-28 01:33:18,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 194 transitions, 2161 flow [2024-06-28 01:33:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:33:18,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:33:18,913 INFO L175 Difference]: Start difference. First operand has 121 places, 150 transitions, 1499 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:33:18,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 194 transitions, 2161 flow [2024-06-28 01:33:18,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 194 transitions, 2096 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:18,950 INFO L231 Difference]: Finished difference. Result has 129 places, 158 transitions, 1620 flow [2024-06-28 01:33:18,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1620, PETRI_PLACES=129, PETRI_TRANSITIONS=158} [2024-06-28 01:33:18,950 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-28 01:33:18,951 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 158 transitions, 1620 flow [2024-06-28 01:33:18,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:18,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:18,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:18,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:33:18,959 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:18,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:18,960 INFO L85 PathProgramCache]: Analyzing trace with hash 148872772, now seen corresponding path program 2 times [2024-06-28 01:33:18,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:18,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740216314] [2024-06-28 01:33:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:18,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:19,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740216314] [2024-06-28 01:33:19,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740216314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:19,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:19,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:19,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982989250] [2024-06-28 01:33:19,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:19,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:19,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:19,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:19,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:19,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:19,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 158 transitions, 1620 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:19,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:19,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:19,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:20,207 INFO L124 PetriNetUnfolderBase]: 865/1709 cut-off events. [2024-06-28 01:33:20,207 INFO L125 PetriNetUnfolderBase]: For 14559/14559 co-relation queries the response was YES. [2024-06-28 01:33:20,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8224 conditions, 1709 events. 865/1709 cut-off events. For 14559/14559 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10478 event pairs, 267 based on Foata normal form. 1/1639 useless extension candidates. Maximal degree in co-relation 8167. Up to 1297 conditions per place. [2024-06-28 01:33:20,221 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 148 selfloop transitions, 43 changer transitions 0/198 dead transitions. [2024-06-28 01:33:20,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 198 transitions, 2281 flow [2024-06-28 01:33:20,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:33:20,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:33:20,223 INFO L175 Difference]: Start difference. First operand has 129 places, 158 transitions, 1620 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:33:20,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 198 transitions, 2281 flow [2024-06-28 01:33:20,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 198 transitions, 2162 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:20,256 INFO L231 Difference]: Finished difference. Result has 132 places, 166 transitions, 1717 flow [2024-06-28 01:33:20,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1717, PETRI_PLACES=132, PETRI_TRANSITIONS=166} [2024-06-28 01:33:20,257 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-28 01:33:20,257 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 166 transitions, 1717 flow [2024-06-28 01:33:20,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:20,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:20,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:20,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:33:20,258 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:20,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:20,258 INFO L85 PathProgramCache]: Analyzing trace with hash 152597422, now seen corresponding path program 3 times [2024-06-28 01:33:20,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:20,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895741092] [2024-06-28 01:33:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:20,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:20,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:20,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895741092] [2024-06-28 01:33:20,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895741092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:20,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:20,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:20,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621468844] [2024-06-28 01:33:20,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:20,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:20,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:20,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:20,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:20,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 166 transitions, 1717 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:20,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:20,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:20,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:21,500 INFO L124 PetriNetUnfolderBase]: 978/1918 cut-off events. [2024-06-28 01:33:21,500 INFO L125 PetriNetUnfolderBase]: For 16352/16352 co-relation queries the response was YES. [2024-06-28 01:33:21,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 1918 events. 978/1918 cut-off events. For 16352/16352 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12078 event pairs, 233 based on Foata normal form. 1/1839 useless extension candidates. Maximal degree in co-relation 9258. Up to 1223 conditions per place. [2024-06-28 01:33:21,515 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 157 selfloop transitions, 82 changer transitions 0/246 dead transitions. [2024-06-28 01:33:21,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 246 transitions, 2822 flow [2024-06-28 01:33:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:33:21,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-28 01:33:21,517 INFO L175 Difference]: Start difference. First operand has 132 places, 166 transitions, 1717 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:33:21,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 246 transitions, 2822 flow [2024-06-28 01:33:21,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 246 transitions, 2724 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:21,560 INFO L231 Difference]: Finished difference. Result has 137 places, 195 transitions, 2126 flow [2024-06-28 01:33:21,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2126, PETRI_PLACES=137, PETRI_TRANSITIONS=195} [2024-06-28 01:33:21,561 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-28 01:33:21,561 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 195 transitions, 2126 flow [2024-06-28 01:33:21,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:21,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:21,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:21,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:33:21,562 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:21,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:21,563 INFO L85 PathProgramCache]: Analyzing trace with hash 152597639, now seen corresponding path program 1 times [2024-06-28 01:33:21,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:21,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697938347] [2024-06-28 01:33:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:21,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:22,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:22,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697938347] [2024-06-28 01:33:22,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697938347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:22,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:22,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:22,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507400140] [2024-06-28 01:33:22,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:22,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:22,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:22,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:22,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:22,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 195 transitions, 2126 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:22,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:22,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:22,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:22,990 INFO L124 PetriNetUnfolderBase]: 1032/2029 cut-off events. [2024-06-28 01:33:22,990 INFO L125 PetriNetUnfolderBase]: For 20463/20463 co-relation queries the response was YES. [2024-06-28 01:33:22,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10333 conditions, 2029 events. 1032/2029 cut-off events. For 20463/20463 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12943 event pairs, 305 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 10270. Up to 1455 conditions per place. [2024-06-28 01:33:23,006 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 207 selfloop transitions, 44 changer transitions 0/258 dead transitions. [2024-06-28 01:33:23,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 258 transitions, 3120 flow [2024-06-28 01:33:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:33:23,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-28 01:33:23,008 INFO L175 Difference]: Start difference. First operand has 137 places, 195 transitions, 2126 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:33:23,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 258 transitions, 3120 flow [2024-06-28 01:33:23,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 258 transitions, 3059 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:23,061 INFO L231 Difference]: Finished difference. Result has 146 places, 219 transitions, 2423 flow [2024-06-28 01:33:23,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2423, PETRI_PLACES=146, PETRI_TRANSITIONS=219} [2024-06-28 01:33:23,061 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 105 predicate places. [2024-06-28 01:33:23,062 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 219 transitions, 2423 flow [2024-06-28 01:33:23,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:23,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:23,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:23,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:33:23,063 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:23,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:23,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1773442391, now seen corresponding path program 4 times [2024-06-28 01:33:23,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:23,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366137867] [2024-06-28 01:33:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:23,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:23,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:23,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366137867] [2024-06-28 01:33:23,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366137867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:23,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:23,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:23,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207105899] [2024-06-28 01:33:23,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:23,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:23,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:23,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:23,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:23,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:23,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 219 transitions, 2423 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:23,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:23,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:23,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:24,490 INFO L124 PetriNetUnfolderBase]: 984/1978 cut-off events. [2024-06-28 01:33:24,491 INFO L125 PetriNetUnfolderBase]: For 21833/21837 co-relation queries the response was YES. [2024-06-28 01:33:24,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10549 conditions, 1978 events. 984/1978 cut-off events. For 21833/21837 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12855 event pairs, 217 based on Foata normal form. 2/1894 useless extension candidates. Maximal degree in co-relation 10482. Up to 1345 conditions per place. [2024-06-28 01:33:24,504 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 169 selfloop transitions, 63 changer transitions 0/263 dead transitions. [2024-06-28 01:33:24,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 263 transitions, 3267 flow [2024-06-28 01:33:24,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:24,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:33:24,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-28 01:33:24,514 INFO L175 Difference]: Start difference. First operand has 146 places, 219 transitions, 2423 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:33:24,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 263 transitions, 3267 flow [2024-06-28 01:33:24,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 263 transitions, 3189 flow, removed 38 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:24,570 INFO L231 Difference]: Finished difference. Result has 155 places, 233 transitions, 2674 flow [2024-06-28 01:33:24,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2674, PETRI_PLACES=155, PETRI_TRANSITIONS=233} [2024-06-28 01:33:24,570 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-28 01:33:24,571 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 233 transitions, 2674 flow [2024-06-28 01:33:24,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:24,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:24,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:24,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:33:24,571 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:24,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash 152591842, now seen corresponding path program 4 times [2024-06-28 01:33:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:24,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99404911] [2024-06-28 01:33:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:25,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:25,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99404911] [2024-06-28 01:33:25,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99404911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:25,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:25,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:25,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527364932] [2024-06-28 01:33:25,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:25,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:25,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:25,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:25,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:25,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:25,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 233 transitions, 2674 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:25,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:25,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:25,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:25,816 INFO L124 PetriNetUnfolderBase]: 1041/2035 cut-off events. [2024-06-28 01:33:25,816 INFO L125 PetriNetUnfolderBase]: For 23585/23585 co-relation queries the response was YES. [2024-06-28 01:33:25,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11213 conditions, 2035 events. 1041/2035 cut-off events. For 23585/23585 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12902 event pairs, 233 based on Foata normal form. 1/1951 useless extension candidates. Maximal degree in co-relation 11142. Up to 1322 conditions per place. [2024-06-28 01:33:25,833 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 174 selfloop transitions, 83 changer transitions 0/264 dead transitions. [2024-06-28 01:33:25,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 264 transitions, 3460 flow [2024-06-28 01:33:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:25,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:33:25,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-28 01:33:25,835 INFO L175 Difference]: Start difference. First operand has 155 places, 233 transitions, 2674 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:33:25,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 264 transitions, 3460 flow [2024-06-28 01:33:25,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 264 transitions, 3351 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:25,903 INFO L231 Difference]: Finished difference. Result has 159 places, 233 transitions, 2736 flow [2024-06-28 01:33:25,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2736, PETRI_PLACES=159, PETRI_TRANSITIONS=233} [2024-06-28 01:33:25,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-06-28 01:33:25,904 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 233 transitions, 2736 flow [2024-06-28 01:33:25,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:25,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:25,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:25,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:33:25,905 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:25,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1676122149, now seen corresponding path program 5 times [2024-06-28 01:33:25,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:25,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589702800] [2024-06-28 01:33:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:26,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:26,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589702800] [2024-06-28 01:33:26,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589702800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:26,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:26,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:26,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138617236] [2024-06-28 01:33:26,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:26,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:26,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:26,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:26,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:26,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 233 transitions, 2736 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:26,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:26,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:26,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:27,468 INFO L124 PetriNetUnfolderBase]: 1044/2072 cut-off events. [2024-06-28 01:33:27,468 INFO L125 PetriNetUnfolderBase]: For 25423/25433 co-relation queries the response was YES. [2024-06-28 01:33:27,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11500 conditions, 2072 events. 1044/2072 cut-off events. For 25423/25433 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13458 event pairs, 216 based on Foata normal form. 1/1988 useless extension candidates. Maximal degree in co-relation 11428. Up to 1327 conditions per place. [2024-06-28 01:33:27,485 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 161 selfloop transitions, 93 changer transitions 0/285 dead transitions. [2024-06-28 01:33:27,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 285 transitions, 3702 flow [2024-06-28 01:33:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:33:27,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105105105105106 [2024-06-28 01:33:27,487 INFO L175 Difference]: Start difference. First operand has 159 places, 233 transitions, 2736 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:33:27,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 285 transitions, 3702 flow [2024-06-28 01:33:27,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 285 transitions, 3508 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:27,557 INFO L231 Difference]: Finished difference. Result has 161 places, 247 transitions, 2924 flow [2024-06-28 01:33:27,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2542, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2924, PETRI_PLACES=161, PETRI_TRANSITIONS=247} [2024-06-28 01:33:27,558 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 120 predicate places. [2024-06-28 01:33:27,558 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 247 transitions, 2924 flow [2024-06-28 01:33:27,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:27,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:27,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:27,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:33:27,559 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:27,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash 320089490, now seen corresponding path program 1 times [2024-06-28 01:33:27,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:27,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353824393] [2024-06-28 01:33:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:27,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:28,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353824393] [2024-06-28 01:33:28,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353824393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:28,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:28,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:28,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097454091] [2024-06-28 01:33:28,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:28,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:28,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:28,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:28,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:28,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:28,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 247 transitions, 2924 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:28,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:28,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:28,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:28,925 INFO L124 PetriNetUnfolderBase]: 1128/2237 cut-off events. [2024-06-28 01:33:28,925 INFO L125 PetriNetUnfolderBase]: For 28416/28416 co-relation queries the response was YES. [2024-06-28 01:33:28,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12482 conditions, 2237 events. 1128/2237 cut-off events. For 28416/28416 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14613 event pairs, 278 based on Foata normal form. 3/2142 useless extension candidates. Maximal degree in co-relation 12408. Up to 1665 conditions per place. [2024-06-28 01:33:28,940 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 232 selfloop transitions, 45 changer transitions 0/284 dead transitions. [2024-06-28 01:33:28,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 284 transitions, 3730 flow [2024-06-28 01:33:28,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:33:28,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-28 01:33:28,945 INFO L175 Difference]: Start difference. First operand has 161 places, 247 transitions, 2924 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:33:28,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 284 transitions, 3730 flow [2024-06-28 01:33:29,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 284 transitions, 3605 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:29,011 INFO L231 Difference]: Finished difference. Result has 166 places, 249 transitions, 2923 flow [2024-06-28 01:33:29,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2923, PETRI_PLACES=166, PETRI_TRANSITIONS=249} [2024-06-28 01:33:29,012 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-28 01:33:29,012 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 249 transitions, 2923 flow [2024-06-28 01:33:29,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:29,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:29,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:29,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:33:29,013 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:29,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:29,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1676118429, now seen corresponding path program 6 times [2024-06-28 01:33:29,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:29,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328309669] [2024-06-28 01:33:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:29,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:30,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:30,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328309669] [2024-06-28 01:33:30,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328309669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:30,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:30,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:30,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415188413] [2024-06-28 01:33:30,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:30,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:30,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:30,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:30,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:30,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:30,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 249 transitions, 2923 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:30,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:30,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:30,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:30,667 INFO L124 PetriNetUnfolderBase]: 1071/2150 cut-off events. [2024-06-28 01:33:30,667 INFO L125 PetriNetUnfolderBase]: For 28516/28525 co-relation queries the response was YES. [2024-06-28 01:33:30,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12031 conditions, 2150 events. 1071/2150 cut-off events. For 28516/28525 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14256 event pairs, 248 based on Foata normal form. 1/2059 useless extension candidates. Maximal degree in co-relation 11956. Up to 1509 conditions per place. [2024-06-28 01:33:30,682 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 191 selfloop transitions, 58 changer transitions 0/280 dead transitions. [2024-06-28 01:33:30,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 280 transitions, 3658 flow [2024-06-28 01:33:30,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:30,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:33:30,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-28 01:33:30,683 INFO L175 Difference]: Start difference. First operand has 166 places, 249 transitions, 2923 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:33:30,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 280 transitions, 3658 flow [2024-06-28 01:33:30,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 280 transitions, 3550 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:30,742 INFO L231 Difference]: Finished difference. Result has 167 places, 251 transitions, 2987 flow [2024-06-28 01:33:30,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2821, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2987, PETRI_PLACES=167, PETRI_TRANSITIONS=251} [2024-06-28 01:33:30,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-28 01:33:30,743 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 251 transitions, 2987 flow [2024-06-28 01:33:30,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:30,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:30,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:30,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:33:30,743 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:30,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:30,744 INFO L85 PathProgramCache]: Analyzing trace with hash 435560150, now seen corresponding path program 2 times [2024-06-28 01:33:30,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:30,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731819863] [2024-06-28 01:33:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:30,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:31,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:31,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731819863] [2024-06-28 01:33:31,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731819863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:31,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:31,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:31,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131696718] [2024-06-28 01:33:31,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:31,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:31,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:31,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:31,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:31,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:31,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 251 transitions, 2987 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:31,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:31,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:31,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:32,153 INFO L124 PetriNetUnfolderBase]: 1222/2362 cut-off events. [2024-06-28 01:33:32,153 INFO L125 PetriNetUnfolderBase]: For 33066/33066 co-relation queries the response was YES. [2024-06-28 01:33:32,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13439 conditions, 2362 events. 1222/2362 cut-off events. For 33066/33066 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15324 event pairs, 243 based on Foata normal form. 3/2270 useless extension candidates. Maximal degree in co-relation 13363. Up to 1322 conditions per place. [2024-06-28 01:33:32,170 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 200 selfloop transitions, 97 changer transitions 0/304 dead transitions. [2024-06-28 01:33:32,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 304 transitions, 4127 flow [2024-06-28 01:33:32,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 01:33:32,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162162162162162 [2024-06-28 01:33:32,172 INFO L175 Difference]: Start difference. First operand has 167 places, 251 transitions, 2987 flow. Second operand 10 states and 191 transitions. [2024-06-28 01:33:32,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 304 transitions, 4127 flow [2024-06-28 01:33:32,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 304 transitions, 4035 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:32,232 INFO L231 Difference]: Finished difference. Result has 172 places, 261 transitions, 3282 flow [2024-06-28 01:33:32,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3282, PETRI_PLACES=172, PETRI_TRANSITIONS=261} [2024-06-28 01:33:32,233 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 131 predicate places. [2024-06-28 01:33:32,233 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 261 transitions, 3282 flow [2024-06-28 01:33:32,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:32,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:32,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:32,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:33:32,234 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:32,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:32,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2079600290, now seen corresponding path program 5 times [2024-06-28 01:33:32,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:32,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375053338] [2024-06-28 01:33:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:32,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:33,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375053338] [2024-06-28 01:33:33,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375053338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:33,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:33,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:33,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84132411] [2024-06-28 01:33:33,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:33,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:33,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:33,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:33,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:33,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:33,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 261 transitions, 3282 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:33,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:33,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:33,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:33,640 INFO L124 PetriNetUnfolderBase]: 1223/2413 cut-off events. [2024-06-28 01:33:33,640 INFO L125 PetriNetUnfolderBase]: For 36223/36223 co-relation queries the response was YES. [2024-06-28 01:33:33,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14121 conditions, 2413 events. 1223/2413 cut-off events. For 36223/36223 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15962 event pairs, 294 based on Foata normal form. 1/2310 useless extension candidates. Maximal degree in co-relation 14043. Up to 1794 conditions per place. [2024-06-28 01:33:33,655 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 226 selfloop transitions, 58 changer transitions 0/291 dead transitions. [2024-06-28 01:33:33,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 291 transitions, 4098 flow [2024-06-28 01:33:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:33,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:33:33,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:33:33,657 INFO L175 Difference]: Start difference. First operand has 172 places, 261 transitions, 3282 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:33:33,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 291 transitions, 4098 flow [2024-06-28 01:33:33,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 291 transitions, 3970 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:33,726 INFO L231 Difference]: Finished difference. Result has 176 places, 263 transitions, 3346 flow [2024-06-28 01:33:33,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3346, PETRI_PLACES=176, PETRI_TRANSITIONS=263} [2024-06-28 01:33:33,727 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-06-28 01:33:33,727 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 263 transitions, 3346 flow [2024-06-28 01:33:33,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:33,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:33,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:33,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:33:33,728 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:33,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:33,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2083324940, now seen corresponding path program 6 times [2024-06-28 01:33:33,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:33,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099215014] [2024-06-28 01:33:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:33,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:34,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:34,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099215014] [2024-06-28 01:33:34,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099215014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:34,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:34,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:34,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541866146] [2024-06-28 01:33:34,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:34,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:34,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:34,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:34,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:34,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:34,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 263 transitions, 3346 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:34,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:34,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:34,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:35,008 INFO L124 PetriNetUnfolderBase]: 1348/2659 cut-off events. [2024-06-28 01:33:35,008 INFO L125 PetriNetUnfolderBase]: For 38969/38969 co-relation queries the response was YES. [2024-06-28 01:33:35,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15625 conditions, 2659 events. 1348/2659 cut-off events. For 38969/38969 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18173 event pairs, 410 based on Foata normal form. 1/2544 useless extension candidates. Maximal degree in co-relation 15545. Up to 1818 conditions per place. [2024-06-28 01:33:35,028 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 242 selfloop transitions, 100 changer transitions 0/349 dead transitions. [2024-06-28 01:33:35,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 349 transitions, 5334 flow [2024-06-28 01:33:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:33:35,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-28 01:33:35,029 INFO L175 Difference]: Start difference. First operand has 176 places, 263 transitions, 3346 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:33:35,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 349 transitions, 5334 flow [2024-06-28 01:33:35,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 349 transitions, 5164 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:35,105 INFO L231 Difference]: Finished difference. Result has 181 places, 307 transitions, 4301 flow [2024-06-28 01:33:35,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3222, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4301, PETRI_PLACES=181, PETRI_TRANSITIONS=307} [2024-06-28 01:33:35,106 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 140 predicate places. [2024-06-28 01:33:35,106 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 307 transitions, 4301 flow [2024-06-28 01:33:35,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:35,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:35,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:35,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:33:35,107 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:35,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:35,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2083325157, now seen corresponding path program 2 times [2024-06-28 01:33:35,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:35,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9328529] [2024-06-28 01:33:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:35,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:35,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:35,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9328529] [2024-06-28 01:33:35,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9328529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:35,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:35,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:35,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24219881] [2024-06-28 01:33:35,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:35,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:35,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:35,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:35,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 307 transitions, 4301 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:35,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:35,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:35,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:36,356 INFO L124 PetriNetUnfolderBase]: 1431/2811 cut-off events. [2024-06-28 01:33:36,356 INFO L125 PetriNetUnfolderBase]: For 42960/42960 co-relation queries the response was YES. [2024-06-28 01:33:36,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16872 conditions, 2811 events. 1431/2811 cut-off events. For 42960/42960 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 19409 event pairs, 346 based on Foata normal form. 3/2693 useless extension candidates. Maximal degree in co-relation 16789. Up to 1960 conditions per place. [2024-06-28 01:33:36,378 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 284 selfloop transitions, 62 changer transitions 0/353 dead transitions. [2024-06-28 01:33:36,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 353 transitions, 5446 flow [2024-06-28 01:33:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 01:33:36,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:33:36,379 INFO L175 Difference]: Start difference. First operand has 181 places, 307 transitions, 4301 flow. Second operand 8 states and 148 transitions. [2024-06-28 01:33:36,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 353 transitions, 5446 flow [2024-06-28 01:33:36,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 353 transitions, 5359 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:36,466 INFO L231 Difference]: Finished difference. Result has 186 places, 314 transitions, 4423 flow [2024-06-28 01:33:36,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4214, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4423, PETRI_PLACES=186, PETRI_TRANSITIONS=314} [2024-06-28 01:33:36,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-28 01:33:36,466 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 314 transitions, 4423 flow [2024-06-28 01:33:36,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:36,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:36,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:36,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:33:36,467 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:36,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:36,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2083319205, now seen corresponding path program 7 times [2024-06-28 01:33:36,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:36,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685873687] [2024-06-28 01:33:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:36,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:37,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:37,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685873687] [2024-06-28 01:33:37,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685873687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:37,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:37,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:37,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557983274] [2024-06-28 01:33:37,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:37,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:37,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:37,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:37,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:37,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:37,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 314 transitions, 4423 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:37,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:37,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:37,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:37,917 INFO L124 PetriNetUnfolderBase]: 1358/2725 cut-off events. [2024-06-28 01:33:37,918 INFO L125 PetriNetUnfolderBase]: For 43155/43160 co-relation queries the response was YES. [2024-06-28 01:33:37,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16621 conditions, 2725 events. 1358/2725 cut-off events. For 43155/43160 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19085 event pairs, 270 based on Foata normal form. 1/2602 useless extension candidates. Maximal degree in co-relation 16536. Up to 1830 conditions per place. [2024-06-28 01:33:37,938 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 215 selfloop transitions, 87 changer transitions 0/347 dead transitions. [2024-06-28 01:33:37,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 347 transitions, 5349 flow [2024-06-28 01:33:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 01:33:37,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:33:37,939 INFO L175 Difference]: Start difference. First operand has 186 places, 314 transitions, 4423 flow. Second operand 8 states and 148 transitions. [2024-06-28 01:33:37,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 347 transitions, 5349 flow [2024-06-28 01:33:38,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 347 transitions, 5266 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:38,031 INFO L231 Difference]: Finished difference. Result has 188 places, 316 transitions, 4555 flow [2024-06-28 01:33:38,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4555, PETRI_PLACES=188, PETRI_TRANSITIONS=316} [2024-06-28 01:33:38,031 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-28 01:33:38,031 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 316 transitions, 4555 flow [2024-06-28 01:33:38,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:38,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:38,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:38,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:33:38,032 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:38,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2083319360, now seen corresponding path program 7 times [2024-06-28 01:33:38,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:38,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593588435] [2024-06-28 01:33:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:38,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:38,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:38,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593588435] [2024-06-28 01:33:38,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593588435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:38,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:38,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:38,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129571255] [2024-06-28 01:33:38,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:38,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:38,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:38,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:38,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:38,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:38,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 316 transitions, 4555 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:38,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:38,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:38,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:39,370 INFO L124 PetriNetUnfolderBase]: 1440/2804 cut-off events. [2024-06-28 01:33:39,370 INFO L125 PetriNetUnfolderBase]: For 44214/44214 co-relation queries the response was YES. [2024-06-28 01:33:39,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17487 conditions, 2804 events. 1440/2804 cut-off events. For 44214/44214 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 19171 event pairs, 291 based on Foata normal form. 1/2684 useless extension candidates. Maximal degree in co-relation 17401. Up to 1803 conditions per place. [2024-06-28 01:33:39,392 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 220 selfloop transitions, 127 changer transitions 0/354 dead transitions. [2024-06-28 01:33:39,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 354 transitions, 5723 flow [2024-06-28 01:33:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:33:39,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-28 01:33:39,406 INFO L175 Difference]: Start difference. First operand has 188 places, 316 transitions, 4555 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:33:39,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 354 transitions, 5723 flow [2024-06-28 01:33:39,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 354 transitions, 5514 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:39,511 INFO L231 Difference]: Finished difference. Result has 190 places, 316 transitions, 4619 flow [2024-06-28 01:33:39,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4619, PETRI_PLACES=190, PETRI_TRANSITIONS=316} [2024-06-28 01:33:39,512 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-06-28 01:33:39,512 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 316 transitions, 4619 flow [2024-06-28 01:33:39,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:39,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:39,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:39,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:33:39,512 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:39,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:39,513 INFO L85 PathProgramCache]: Analyzing trace with hash 596721671, now seen corresponding path program 3 times [2024-06-28 01:33:39,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:39,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923053427] [2024-06-28 01:33:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:39,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:40,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:40,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923053427] [2024-06-28 01:33:40,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923053427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:40,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:40,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:40,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615160270] [2024-06-28 01:33:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:40,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:40,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:40,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:40,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:40,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 316 transitions, 4619 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:40,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:40,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:40,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:40,791 INFO L124 PetriNetUnfolderBase]: 1494/2944 cut-off events. [2024-06-28 01:33:40,791 INFO L125 PetriNetUnfolderBase]: For 46752/46752 co-relation queries the response was YES. [2024-06-28 01:33:40,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18059 conditions, 2944 events. 1494/2944 cut-off events. For 46752/46752 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20545 event pairs, 454 based on Foata normal form. 3/2816 useless extension candidates. Maximal degree in co-relation 17972. Up to 2197 conditions per place. [2024-06-28 01:33:40,809 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 315 selfloop transitions, 38 changer transitions 0/360 dead transitions. [2024-06-28 01:33:40,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 360 transitions, 5784 flow [2024-06-28 01:33:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 01:33:40,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-28 01:33:40,810 INFO L175 Difference]: Start difference. First operand has 190 places, 316 transitions, 4619 flow. Second operand 8 states and 142 transitions. [2024-06-28 01:33:40,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 360 transitions, 5784 flow [2024-06-28 01:33:40,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 360 transitions, 5509 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:40,896 INFO L231 Difference]: Finished difference. Result has 191 places, 321 transitions, 4489 flow [2024-06-28 01:33:40,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4346, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4489, PETRI_PLACES=191, PETRI_TRANSITIONS=321} [2024-06-28 01:33:40,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-28 01:33:40,897 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 321 transitions, 4489 flow [2024-06-28 01:33:40,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:40,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:40,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:40,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:33:40,897 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:40,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash -128952372, now seen corresponding path program 8 times [2024-06-28 01:33:40,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:40,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098564786] [2024-06-28 01:33:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:40,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:41,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098564786] [2024-06-28 01:33:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098564786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:41,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:41,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:41,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257124596] [2024-06-28 01:33:41,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:41,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:41,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:41,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:41,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:41,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 321 transitions, 4489 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:41,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:41,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:41,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:42,158 INFO L124 PetriNetUnfolderBase]: 1532/3013 cut-off events. [2024-06-28 01:33:42,158 INFO L125 PetriNetUnfolderBase]: For 46040/46040 co-relation queries the response was YES. [2024-06-28 01:33:42,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18358 conditions, 3013 events. 1532/3013 cut-off events. For 46040/46040 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 21133 event pairs, 454 based on Foata normal form. 1/2881 useless extension candidates. Maximal degree in co-relation 18271. Up to 2306 conditions per place. [2024-06-28 01:33:42,181 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 315 selfloop transitions, 47 changer transitions 0/369 dead transitions. [2024-06-28 01:33:42,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 369 transitions, 5951 flow [2024-06-28 01:33:42,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:42,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 01:33:42,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-28 01:33:42,183 INFO L175 Difference]: Start difference. First operand has 191 places, 321 transitions, 4489 flow. Second operand 8 states and 139 transitions. [2024-06-28 01:33:42,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 369 transitions, 5951 flow [2024-06-28 01:33:42,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 369 transitions, 5833 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:42,285 INFO L231 Difference]: Finished difference. Result has 193 places, 333 transitions, 4690 flow [2024-06-28 01:33:42,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4371, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4690, PETRI_PLACES=193, PETRI_TRANSITIONS=333} [2024-06-28 01:33:42,286 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-28 01:33:42,286 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 333 transitions, 4690 flow [2024-06-28 01:33:42,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:42,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:42,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:42,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:33:42,286 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:42,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:42,287 INFO L85 PathProgramCache]: Analyzing trace with hash -128958107, now seen corresponding path program 8 times [2024-06-28 01:33:42,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:42,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645466382] [2024-06-28 01:33:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:42,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:43,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:43,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645466382] [2024-06-28 01:33:43,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645466382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:43,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:43,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:43,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258809261] [2024-06-28 01:33:43,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:43,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:43,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:43,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:43,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:43,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:43,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 333 transitions, 4690 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:43,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:43,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:43,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:43,748 INFO L124 PetriNetUnfolderBase]: 1445/2905 cut-off events. [2024-06-28 01:33:43,748 INFO L125 PetriNetUnfolderBase]: For 45111/45119 co-relation queries the response was YES. [2024-06-28 01:33:43,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17499 conditions, 2905 events. 1445/2905 cut-off events. For 45111/45119 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 20767 event pairs, 426 based on Foata normal form. 1/2778 useless extension candidates. Maximal degree in co-relation 17412. Up to 2173 conditions per place. [2024-06-28 01:33:43,771 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 286 selfloop transitions, 23 changer transitions 0/360 dead transitions. [2024-06-28 01:33:43,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 360 transitions, 5564 flow [2024-06-28 01:33:43,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:33:43,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:33:43,772 INFO L175 Difference]: Start difference. First operand has 193 places, 333 transitions, 4690 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:33:43,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 360 transitions, 5564 flow [2024-06-28 01:33:43,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 360 transitions, 5427 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:43,862 INFO L231 Difference]: Finished difference. Result has 197 places, 335 transitions, 4636 flow [2024-06-28 01:33:43,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4553, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4636, PETRI_PLACES=197, PETRI_TRANSITIONS=335} [2024-06-28 01:33:43,862 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-28 01:33:43,862 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 335 transitions, 4636 flow [2024-06-28 01:33:43,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:43,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:43,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:43,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:33:43,863 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:43,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:43,863 INFO L85 PathProgramCache]: Analyzing trace with hash -128957952, now seen corresponding path program 9 times [2024-06-28 01:33:43,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:43,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754619258] [2024-06-28 01:33:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:43,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:44,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:44,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754619258] [2024-06-28 01:33:44,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754619258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:44,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:44,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:44,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528067944] [2024-06-28 01:33:44,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:44,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:44,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:44,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:44,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:44,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:44,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 335 transitions, 4636 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:44,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:44,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:44,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:45,375 INFO L124 PetriNetUnfolderBase]: 1531/3012 cut-off events. [2024-06-28 01:33:45,375 INFO L125 PetriNetUnfolderBase]: For 46099/46099 co-relation queries the response was YES. [2024-06-28 01:33:45,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18124 conditions, 3012 events. 1531/3012 cut-off events. For 46099/46099 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 21146 event pairs, 455 based on Foata normal form. 1/2880 useless extension candidates. Maximal degree in co-relation 18036. Up to 2306 conditions per place. [2024-06-28 01:33:45,394 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 309 selfloop transitions, 50 changer transitions 0/366 dead transitions. [2024-06-28 01:33:45,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 366 transitions, 5748 flow [2024-06-28 01:33:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:33:45,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-28 01:33:45,396 INFO L175 Difference]: Start difference. First operand has 197 places, 335 transitions, 4636 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:33:45,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 366 transitions, 5748 flow [2024-06-28 01:33:45,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 366 transitions, 5655 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:45,491 INFO L231 Difference]: Finished difference. Result has 199 places, 335 transitions, 4654 flow [2024-06-28 01:33:45,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4543, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4654, PETRI_PLACES=199, PETRI_TRANSITIONS=335} [2024-06-28 01:33:45,492 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 158 predicate places. [2024-06-28 01:33:45,492 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 335 transitions, 4654 flow [2024-06-28 01:33:45,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:45,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:45,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:45,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:33:45,492 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:45,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:45,493 INFO L85 PathProgramCache]: Analyzing trace with hash -120706992, now seen corresponding path program 10 times [2024-06-28 01:33:45,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:45,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146376775] [2024-06-28 01:33:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:45,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:46,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:46,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146376775] [2024-06-28 01:33:46,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146376775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:46,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:46,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:46,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528180233] [2024-06-28 01:33:46,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:46,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:46,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:46,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:46,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:46,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:46,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 335 transitions, 4654 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:46,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:46,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:46,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:46,777 INFO L124 PetriNetUnfolderBase]: 1529/3009 cut-off events. [2024-06-28 01:33:46,777 INFO L125 PetriNetUnfolderBase]: For 46719/46719 co-relation queries the response was YES. [2024-06-28 01:33:46,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18111 conditions, 3009 events. 1529/3009 cut-off events. For 46719/46719 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 21146 event pairs, 455 based on Foata normal form. 1/2877 useless extension candidates. Maximal degree in co-relation 18022. Up to 2388 conditions per place. [2024-06-28 01:33:46,800 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 327 selfloop transitions, 24 changer transitions 0/358 dead transitions. [2024-06-28 01:33:46,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 358 transitions, 5558 flow [2024-06-28 01:33:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:33:46,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:33:46,801 INFO L175 Difference]: Start difference. First operand has 199 places, 335 transitions, 4654 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:33:46,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 358 transitions, 5558 flow [2024-06-28 01:33:46,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 358 transitions, 5430 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:46,897 INFO L231 Difference]: Finished difference. Result has 201 places, 335 transitions, 4585 flow [2024-06-28 01:33:46,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4526, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4585, PETRI_PLACES=201, PETRI_TRANSITIONS=335} [2024-06-28 01:33:46,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-28 01:33:46,898 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 335 transitions, 4585 flow [2024-06-28 01:33:46,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:46,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:46,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:46,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:33:46,898 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:46,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:46,899 INFO L85 PathProgramCache]: Analyzing trace with hash -120706775, now seen corresponding path program 4 times [2024-06-28 01:33:46,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:46,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559713036] [2024-06-28 01:33:46,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:46,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:47,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:47,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559713036] [2024-06-28 01:33:47,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559713036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:47,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:47,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:47,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995007788] [2024-06-28 01:33:47,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:47,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:47,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 335 transitions, 4585 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:47,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:47,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:47,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:48,275 INFO L124 PetriNetUnfolderBase]: 1583/3126 cut-off events. [2024-06-28 01:33:48,275 INFO L125 PetriNetUnfolderBase]: For 49244/49244 co-relation queries the response was YES. [2024-06-28 01:33:48,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18504 conditions, 3126 events. 1583/3126 cut-off events. For 49244/49244 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 22139 event pairs, 463 based on Foata normal form. 3/2988 useless extension candidates. Maximal degree in co-relation 18414. Up to 2376 conditions per place. [2024-06-28 01:33:48,302 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 336 selfloop transitions, 31 changer transitions 0/374 dead transitions. [2024-06-28 01:33:48,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 374 transitions, 5712 flow [2024-06-28 01:33:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:33:48,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-28 01:33:48,303 INFO L175 Difference]: Start difference. First operand has 201 places, 335 transitions, 4585 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:33:48,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 374 transitions, 5712 flow [2024-06-28 01:33:48,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 374 transitions, 5620 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:48,412 INFO L231 Difference]: Finished difference. Result has 202 places, 340 transitions, 4616 flow [2024-06-28 01:33:48,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4493, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4616, PETRI_PLACES=202, PETRI_TRANSITIONS=340} [2024-06-28 01:33:48,413 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-28 01:33:48,413 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 340 transitions, 4616 flow [2024-06-28 01:33:48,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:48,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:48,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:48,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:33:48,413 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:48,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:48,413 INFO L85 PathProgramCache]: Analyzing trace with hash -120411035, now seen corresponding path program 5 times [2024-06-28 01:33:48,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:48,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230520676] [2024-06-28 01:33:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:48,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:48,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:48,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230520676] [2024-06-28 01:33:48,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230520676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:48,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:48,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071666773] [2024-06-28 01:33:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:48,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:48,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:48,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:48,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:49,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:49,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 340 transitions, 4616 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:49,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:49,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:49,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:49,637 INFO L124 PetriNetUnfolderBase]: 1577/3109 cut-off events. [2024-06-28 01:33:49,637 INFO L125 PetriNetUnfolderBase]: For 48700/48700 co-relation queries the response was YES. [2024-06-28 01:33:49,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18460 conditions, 3109 events. 1577/3109 cut-off events. For 48700/48700 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 22006 event pairs, 461 based on Foata normal form. 3/2973 useless extension candidates. Maximal degree in co-relation 18369. Up to 2438 conditions per place. [2024-06-28 01:33:49,662 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 337 selfloop transitions, 20 changer transitions 0/364 dead transitions. [2024-06-28 01:33:49,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 364 transitions, 5510 flow [2024-06-28 01:33:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 01:33:49,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-28 01:33:49,663 INFO L175 Difference]: Start difference. First operand has 202 places, 340 transitions, 4616 flow. Second operand 8 states and 133 transitions. [2024-06-28 01:33:49,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 364 transitions, 5510 flow [2024-06-28 01:33:49,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 364 transitions, 5417 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:49,776 INFO L231 Difference]: Finished difference. Result has 203 places, 340 transitions, 4571 flow [2024-06-28 01:33:49,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4523, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4571, PETRI_PLACES=203, PETRI_TRANSITIONS=340} [2024-06-28 01:33:49,777 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-28 01:33:49,777 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 340 transitions, 4571 flow [2024-06-28 01:33:49,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:49,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:49,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:49,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:33:49,778 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:49,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:49,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1691434914, now seen corresponding path program 1 times [2024-06-28 01:33:49,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:49,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562190486] [2024-06-28 01:33:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:49,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:50,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:50,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562190486] [2024-06-28 01:33:50,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562190486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:50,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:50,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:50,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638437400] [2024-06-28 01:33:50,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:50,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:50,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:50,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:50,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:50,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:50,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 340 transitions, 4571 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:50,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:50,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:50,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:51,213 INFO L124 PetriNetUnfolderBase]: 1562/3122 cut-off events. [2024-06-28 01:33:51,213 INFO L125 PetriNetUnfolderBase]: For 53152/53172 co-relation queries the response was YES. [2024-06-28 01:33:51,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18496 conditions, 3122 events. 1562/3122 cut-off events. For 53152/53172 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 22476 event pairs, 253 based on Foata normal form. 2/2987 useless extension candidates. Maximal degree in co-relation 18404. Up to 1858 conditions per place. [2024-06-28 01:33:51,239 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 244 selfloop transitions, 93 changer transitions 0/388 dead transitions. [2024-06-28 01:33:51,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 388 transitions, 5681 flow [2024-06-28 01:33:51,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:33:51,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-28 01:33:51,240 INFO L175 Difference]: Start difference. First operand has 203 places, 340 transitions, 4571 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:33:51,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 388 transitions, 5681 flow [2024-06-28 01:33:51,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 388 transitions, 5624 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:51,370 INFO L231 Difference]: Finished difference. Result has 208 places, 345 transitions, 4816 flow [2024-06-28 01:33:51,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4514, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4816, PETRI_PLACES=208, PETRI_TRANSITIONS=345} [2024-06-28 01:33:51,371 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-28 01:33:51,371 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 345 transitions, 4816 flow [2024-06-28 01:33:51,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:51,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:51,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:51,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:33:51,372 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:51,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:51,372 INFO L85 PathProgramCache]: Analyzing trace with hash 431218138, now seen corresponding path program 3 times [2024-06-28 01:33:51,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:51,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721999507] [2024-06-28 01:33:51,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:51,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:51,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:51,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721999507] [2024-06-28 01:33:51,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721999507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:51,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:51,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:51,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188618528] [2024-06-28 01:33:51,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:51,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:51,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:51,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:51,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:52,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:52,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 345 transitions, 4816 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:52,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:52,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:52,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:52,913 INFO L124 PetriNetUnfolderBase]: 1711/3317 cut-off events. [2024-06-28 01:33:52,913 INFO L125 PetriNetUnfolderBase]: For 58803/58803 co-relation queries the response was YES. [2024-06-28 01:33:52,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20274 conditions, 3317 events. 1711/3317 cut-off events. For 58803/58803 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 23458 event pairs, 323 based on Foata normal form. 3/3182 useless extension candidates. Maximal degree in co-relation 20179. Up to 1785 conditions per place. [2024-06-28 01:33:52,939 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 266 selfloop transitions, 122 changer transitions 0/395 dead transitions. [2024-06-28 01:33:52,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 395 transitions, 6174 flow [2024-06-28 01:33:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 01:33:52,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297297297297298 [2024-06-28 01:33:52,940 INFO L175 Difference]: Start difference. First operand has 208 places, 345 transitions, 4816 flow. Second operand 10 states and 196 transitions. [2024-06-28 01:33:52,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 395 transitions, 6174 flow [2024-06-28 01:33:53,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 395 transitions, 6009 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:53,085 INFO L231 Difference]: Finished difference. Result has 212 places, 349 transitions, 4945 flow [2024-06-28 01:33:53,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4651, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4945, PETRI_PLACES=212, PETRI_TRANSITIONS=349} [2024-06-28 01:33:53,086 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-28 01:33:53,086 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 349 transitions, 4945 flow [2024-06-28 01:33:53,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:53,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:53,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:53,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:33:53,087 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:53,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash -964040496, now seen corresponding path program 2 times [2024-06-28 01:33:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:53,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065590849] [2024-06-28 01:33:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:53,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:53,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:53,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065590849] [2024-06-28 01:33:53,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065590849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:53,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:53,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:53,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469716273] [2024-06-28 01:33:53,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:53,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:53,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:53,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:53,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:53,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:53,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 349 transitions, 4945 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:53,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:53,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:53,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:54,569 INFO L124 PetriNetUnfolderBase]: 1709/3433 cut-off events. [2024-06-28 01:33:54,569 INFO L125 PetriNetUnfolderBase]: For 62269/62301 co-relation queries the response was YES. [2024-06-28 01:33:54,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20708 conditions, 3433 events. 1709/3433 cut-off events. For 62269/62301 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25383 event pairs, 345 based on Foata normal form. 5/3289 useless extension candidates. Maximal degree in co-relation 20612. Up to 2145 conditions per place. [2024-06-28 01:33:54,596 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 250 selfloop transitions, 102 changer transitions 0/403 dead transitions. [2024-06-28 01:33:54,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 403 transitions, 6106 flow [2024-06-28 01:33:54,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:54,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 01:33:54,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085995085995086 [2024-06-28 01:33:54,597 INFO L175 Difference]: Start difference. First operand has 212 places, 349 transitions, 4945 flow. Second operand 11 states and 207 transitions. [2024-06-28 01:33:54,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 403 transitions, 6106 flow [2024-06-28 01:33:54,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 403 transitions, 5900 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:54,727 INFO L231 Difference]: Finished difference. Result has 218 places, 356 transitions, 5039 flow [2024-06-28 01:33:54,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4739, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5039, PETRI_PLACES=218, PETRI_TRANSITIONS=356} [2024-06-28 01:33:54,727 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-28 01:33:54,728 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 356 transitions, 5039 flow [2024-06-28 01:33:54,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:54,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:54,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:54,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:33:54,728 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:54,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1383605898, now seen corresponding path program 1 times [2024-06-28 01:33:54,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:54,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3456802] [2024-06-28 01:33:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:54,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:55,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:55,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3456802] [2024-06-28 01:33:55,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3456802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:55,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:55,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:55,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585961344] [2024-06-28 01:33:55,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:55,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:55,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:55,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:55,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:55,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:55,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 356 transitions, 5039 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:55,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:55,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:55,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:56,259 INFO L124 PetriNetUnfolderBase]: 1837/3638 cut-off events. [2024-06-28 01:33:56,259 INFO L125 PetriNetUnfolderBase]: For 64700/64700 co-relation queries the response was YES. [2024-06-28 01:33:56,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21998 conditions, 3638 events. 1837/3638 cut-off events. For 64700/64700 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 26669 event pairs, 398 based on Foata normal form. 1/3481 useless extension candidates. Maximal degree in co-relation 21900. Up to 2392 conditions per place. [2024-06-28 01:33:56,289 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 304 selfloop transitions, 95 changer transitions 0/406 dead transitions. [2024-06-28 01:33:56,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 406 transitions, 6337 flow [2024-06-28 01:33:56,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-28 01:33:56,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-28 01:33:56,292 INFO L175 Difference]: Start difference. First operand has 218 places, 356 transitions, 5039 flow. Second operand 11 states and 197 transitions. [2024-06-28 01:33:56,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 406 transitions, 6337 flow [2024-06-28 01:33:56,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 406 transitions, 6199 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:56,450 INFO L231 Difference]: Finished difference. Result has 223 places, 363 transitions, 5239 flow [2024-06-28 01:33:56,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4901, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5239, PETRI_PLACES=223, PETRI_TRANSITIONS=363} [2024-06-28 01:33:56,451 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 182 predicate places. [2024-06-28 01:33:56,451 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 363 transitions, 5239 flow [2024-06-28 01:33:56,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:56,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:56,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:56,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:33:56,452 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:56,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1383609742, now seen corresponding path program 3 times [2024-06-28 01:33:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:56,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194523573] [2024-06-28 01:33:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:56,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194523573] [2024-06-28 01:33:56,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194523573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:56,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:56,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:56,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422505575] [2024-06-28 01:33:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:56,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:56,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:56,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:57,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:33:57,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 363 transitions, 5239 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:57,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:57,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:33:57,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:58,005 INFO L124 PetriNetUnfolderBase]: 1749/3544 cut-off events. [2024-06-28 01:33:58,005 INFO L125 PetriNetUnfolderBase]: For 67311/67343 co-relation queries the response was YES. [2024-06-28 01:33:58,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21650 conditions, 3544 events. 1749/3544 cut-off events. For 67311/67343 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 26550 event pairs, 379 based on Foata normal form. 5/3388 useless extension candidates. Maximal degree in co-relation 21549. Up to 2332 conditions per place. [2024-06-28 01:33:58,035 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 255 selfloop transitions, 97 changer transitions 0/406 dead transitions. [2024-06-28 01:33:58,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 406 transitions, 6267 flow [2024-06-28 01:33:58,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:33:58,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987714987714988 [2024-06-28 01:33:58,036 INFO L175 Difference]: Start difference. First operand has 223 places, 363 transitions, 5239 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:33:58,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 406 transitions, 6267 flow [2024-06-28 01:33:58,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 406 transitions, 6133 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:58,197 INFO L231 Difference]: Finished difference. Result has 228 places, 364 transitions, 5329 flow [2024-06-28 01:33:58,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5115, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5329, PETRI_PLACES=228, PETRI_TRANSITIONS=364} [2024-06-28 01:33:58,198 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-06-28 01:33:58,198 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 364 transitions, 5329 flow [2024-06-28 01:33:58,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:58,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:58,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:58,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:33:58,198 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:58,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:58,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1311934962, now seen corresponding path program 4 times [2024-06-28 01:33:58,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:58,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457762504] [2024-06-28 01:33:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:58,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:58,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457762504] [2024-06-28 01:33:58,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457762504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:58,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:58,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:58,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745711378] [2024-06-28 01:33:58,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:58,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:58,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:58,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:58,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:58,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:33:58,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 364 transitions, 5329 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:58,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:58,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:33:58,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:59,862 INFO L124 PetriNetUnfolderBase]: 1911/3794 cut-off events. [2024-06-28 01:33:59,863 INFO L125 PetriNetUnfolderBase]: For 70223/70223 co-relation queries the response was YES. [2024-06-28 01:33:59,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23228 conditions, 3794 events. 1911/3794 cut-off events. For 70223/70223 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 28193 event pairs, 428 based on Foata normal form. 3/3630 useless extension candidates. Maximal degree in co-relation 23125. Up to 2787 conditions per place. [2024-06-28 01:33:59,893 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 339 selfloop transitions, 77 changer transitions 0/423 dead transitions. [2024-06-28 01:33:59,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 423 transitions, 6740 flow [2024-06-28 01:33:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:33:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:33:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-28 01:33:59,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47072072072072074 [2024-06-28 01:33:59,895 INFO L175 Difference]: Start difference. First operand has 228 places, 364 transitions, 5329 flow. Second operand 12 states and 209 transitions. [2024-06-28 01:33:59,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 423 transitions, 6740 flow [2024-06-28 01:34:00,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 423 transitions, 6550 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:00,068 INFO L231 Difference]: Finished difference. Result has 233 places, 378 transitions, 5536 flow [2024-06-28 01:34:00,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5139, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5536, PETRI_PLACES=233, PETRI_TRANSITIONS=378} [2024-06-28 01:34:00,069 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-28 01:34:00,069 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 378 transitions, 5536 flow [2024-06-28 01:34:00,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:00,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:00,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:00,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:34:00,070 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:00,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash 317227570, now seen corresponding path program 4 times [2024-06-28 01:34:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:00,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972058548] [2024-06-28 01:34:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:00,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:00,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:00,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972058548] [2024-06-28 01:34:00,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972058548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:00,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:00,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:00,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186343153] [2024-06-28 01:34:00,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:00,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:00,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:00,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:00,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:00,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:00,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 378 transitions, 5536 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:00,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:00,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:00,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:01,916 INFO L124 PetriNetUnfolderBase]: 1939/3951 cut-off events. [2024-06-28 01:34:01,916 INFO L125 PetriNetUnfolderBase]: For 76388/76414 co-relation queries the response was YES. [2024-06-28 01:34:01,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24126 conditions, 3951 events. 1939/3951 cut-off events. For 76388/76414 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30501 event pairs, 457 based on Foata normal form. 14/3790 useless extension candidates. Maximal degree in co-relation 24020. Up to 2668 conditions per place. [2024-06-28 01:34:01,951 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 302 selfloop transitions, 78 changer transitions 0/434 dead transitions. [2024-06-28 01:34:01,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 434 transitions, 6814 flow [2024-06-28 01:34:01,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:34:01,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987714987714988 [2024-06-28 01:34:01,953 INFO L175 Difference]: Start difference. First operand has 233 places, 378 transitions, 5536 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:34:01,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 434 transitions, 6814 flow [2024-06-28 01:34:02,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 434 transitions, 6664 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:02,149 INFO L231 Difference]: Finished difference. Result has 237 places, 389 transitions, 5698 flow [2024-06-28 01:34:02,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5386, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5698, PETRI_PLACES=237, PETRI_TRANSITIONS=389} [2024-06-28 01:34:02,150 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 01:34:02,150 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 389 transitions, 5698 flow [2024-06-28 01:34:02,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:02,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:02,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:02,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:34:02,151 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:02,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 317288020, now seen corresponding path program 5 times [2024-06-28 01:34:02,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:02,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895922812] [2024-06-28 01:34:02,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:02,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:02,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:02,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895922812] [2024-06-28 01:34:02,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895922812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:02,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:02,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:02,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317755559] [2024-06-28 01:34:02,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:02,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:02,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:02,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:02,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:03,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:03,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 389 transitions, 5698 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:03,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:03,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:03,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:04,130 INFO L124 PetriNetUnfolderBase]: 1936/3974 cut-off events. [2024-06-28 01:34:04,130 INFO L125 PetriNetUnfolderBase]: For 76090/76114 co-relation queries the response was YES. [2024-06-28 01:34:04,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24429 conditions, 3974 events. 1936/3974 cut-off events. For 76090/76114 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30925 event pairs, 493 based on Foata normal form. 14/3806 useless extension candidates. Maximal degree in co-relation 24320. Up to 2794 conditions per place. [2024-06-28 01:34:04,167 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 302 selfloop transitions, 74 changer transitions 0/430 dead transitions. [2024-06-28 01:34:04,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 430 transitions, 6751 flow [2024-06-28 01:34:04,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:34:04,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-28 01:34:04,168 INFO L175 Difference]: Start difference. First operand has 237 places, 389 transitions, 5698 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:34:04,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 430 transitions, 6751 flow [2024-06-28 01:34:04,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 430 transitions, 6651 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:04,400 INFO L231 Difference]: Finished difference. Result has 242 places, 389 transitions, 5760 flow [2024-06-28 01:34:04,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5598, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5760, PETRI_PLACES=242, PETRI_TRANSITIONS=389} [2024-06-28 01:34:04,401 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-28 01:34:04,401 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 389 transitions, 5760 flow [2024-06-28 01:34:04,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:04,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:04,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:04,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:34:04,401 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:04,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash 317288144, now seen corresponding path program 2 times [2024-06-28 01:34:04,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:04,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807460983] [2024-06-28 01:34:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:04,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:05,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:05,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:05,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807460983] [2024-06-28 01:34:05,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807460983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:05,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:05,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:05,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569124864] [2024-06-28 01:34:05,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:05,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:05,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:05,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:05,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:05,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:05,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 389 transitions, 5760 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:05,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:05,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:05,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:06,317 INFO L124 PetriNetUnfolderBase]: 2065/4186 cut-off events. [2024-06-28 01:34:06,317 INFO L125 PetriNetUnfolderBase]: For 78492/78492 co-relation queries the response was YES. [2024-06-28 01:34:06,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25894 conditions, 4186 events. 2065/4186 cut-off events. For 78492/78492 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 32293 event pairs, 534 based on Foata normal form. 1/3991 useless extension candidates. Maximal degree in co-relation 25783. Up to 3054 conditions per place. [2024-06-28 01:34:06,359 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 344 selfloop transitions, 88 changer transitions 0/439 dead transitions. [2024-06-28 01:34:06,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 439 transitions, 7022 flow [2024-06-28 01:34:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:06,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-28 01:34:06,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-28 01:34:06,360 INFO L175 Difference]: Start difference. First operand has 242 places, 389 transitions, 5760 flow. Second operand 12 states and 205 transitions. [2024-06-28 01:34:06,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 439 transitions, 7022 flow [2024-06-28 01:34:06,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 439 transitions, 6874 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:34:06,615 INFO L231 Difference]: Finished difference. Result has 244 places, 395 transitions, 5890 flow [2024-06-28 01:34:06,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5612, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5890, PETRI_PLACES=244, PETRI_TRANSITIONS=395} [2024-06-28 01:34:06,616 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-28 01:34:06,616 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 395 transitions, 5890 flow [2024-06-28 01:34:06,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:06,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:06,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:06,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:34:06,617 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:06,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash 435375824, now seen corresponding path program 3 times [2024-06-28 01:34:06,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:06,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498832662] [2024-06-28 01:34:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:07,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:07,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498832662] [2024-06-28 01:34:07,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498832662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:07,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:07,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:07,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434363959] [2024-06-28 01:34:07,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:07,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:07,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:07,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:07,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:07,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:07,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 395 transitions, 5890 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:07,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:07,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:07,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:08,529 INFO L124 PetriNetUnfolderBase]: 2089/4165 cut-off events. [2024-06-28 01:34:08,530 INFO L125 PetriNetUnfolderBase]: For 82037/82037 co-relation queries the response was YES. [2024-06-28 01:34:08,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26323 conditions, 4165 events. 2089/4165 cut-off events. For 82037/82037 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 31777 event pairs, 463 based on Foata normal form. 1/3976 useless extension candidates. Maximal degree in co-relation 26211. Up to 2871 conditions per place. [2024-06-28 01:34:08,568 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 302 selfloop transitions, 131 changer transitions 0/440 dead transitions. [2024-06-28 01:34:08,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 440 transitions, 7278 flow [2024-06-28 01:34:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-28 01:34:08,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:34:08,570 INFO L175 Difference]: Start difference. First operand has 244 places, 395 transitions, 5890 flow. Second operand 11 states and 198 transitions. [2024-06-28 01:34:08,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 440 transitions, 7278 flow [2024-06-28 01:34:08,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 440 transitions, 7082 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 01:34:08,832 INFO L231 Difference]: Finished difference. Result has 245 places, 399 transitions, 6027 flow [2024-06-28 01:34:08,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5694, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6027, PETRI_PLACES=245, PETRI_TRANSITIONS=399} [2024-06-28 01:34:08,833 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-28 01:34:08,833 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 399 transitions, 6027 flow [2024-06-28 01:34:08,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:08,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:08,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:08,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:34:08,834 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:08,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:08,834 INFO L85 PathProgramCache]: Analyzing trace with hash 435375700, now seen corresponding path program 6 times [2024-06-28 01:34:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:08,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475942310] [2024-06-28 01:34:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:08,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:09,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:09,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475942310] [2024-06-28 01:34:09,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475942310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:09,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:09,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:09,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357641622] [2024-06-28 01:34:09,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:09,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:09,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:09,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:09,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:09,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:09,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 399 transitions, 6027 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:09,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:09,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:09,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:10,875 INFO L124 PetriNetUnfolderBase]: 1995/4086 cut-off events. [2024-06-28 01:34:10,875 INFO L125 PetriNetUnfolderBase]: For 84730/84743 co-relation queries the response was YES. [2024-06-28 01:34:10,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25762 conditions, 4086 events. 1995/4086 cut-off events. For 84730/84743 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 31908 event pairs, 464 based on Foata normal form. 5/3900 useless extension candidates. Maximal degree in co-relation 25649. Up to 2876 conditions per place. [2024-06-28 01:34:10,916 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 295 selfloop transitions, 82 changer transitions 0/436 dead transitions. [2024-06-28 01:34:10,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 436 transitions, 7121 flow [2024-06-28 01:34:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:34:10,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-28 01:34:10,917 INFO L175 Difference]: Start difference. First operand has 245 places, 399 transitions, 6027 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:34:10,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 436 transitions, 7121 flow [2024-06-28 01:34:11,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 436 transitions, 6927 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:11,212 INFO L231 Difference]: Finished difference. Result has 248 places, 400 transitions, 6023 flow [2024-06-28 01:34:11,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5833, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6023, PETRI_PLACES=248, PETRI_TRANSITIONS=400} [2024-06-28 01:34:11,212 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-28 01:34:11,213 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 400 transitions, 6023 flow [2024-06-28 01:34:11,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:11,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:11,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:11,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:34:11,214 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:11,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash 858039180, now seen corresponding path program 4 times [2024-06-28 01:34:11,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:11,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117673390] [2024-06-28 01:34:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:11,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:11,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:11,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117673390] [2024-06-28 01:34:11,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117673390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:11,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:11,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:11,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925425353] [2024-06-28 01:34:11,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:11,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:11,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:11,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:11,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:12,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:12,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 400 transitions, 6023 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:12,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:12,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:12,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:13,162 INFO L124 PetriNetUnfolderBase]: 2103/4206 cut-off events. [2024-06-28 01:34:13,162 INFO L125 PetriNetUnfolderBase]: For 85333/85333 co-relation queries the response was YES. [2024-06-28 01:34:13,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26875 conditions, 4206 events. 2103/4206 cut-off events. For 85333/85333 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 32218 event pairs, 469 based on Foata normal form. 1/4013 useless extension candidates. Maximal degree in co-relation 26760. Up to 2933 conditions per place. [2024-06-28 01:34:13,209 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 292 selfloop transitions, 136 changer transitions 0/435 dead transitions. [2024-06-28 01:34:13,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 435 transitions, 7197 flow [2024-06-28 01:34:13,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 01:34:13,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-28 01:34:13,210 INFO L175 Difference]: Start difference. First operand has 248 places, 400 transitions, 6023 flow. Second operand 10 states and 179 transitions. [2024-06-28 01:34:13,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 435 transitions, 7197 flow [2024-06-28 01:34:13,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 435 transitions, 7005 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:13,485 INFO L231 Difference]: Finished difference. Result has 250 places, 400 transitions, 6109 flow [2024-06-28 01:34:13,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5831, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6109, PETRI_PLACES=250, PETRI_TRANSITIONS=400} [2024-06-28 01:34:13,486 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-28 01:34:13,486 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 400 transitions, 6109 flow [2024-06-28 01:34:13,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:13,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:13,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:13,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:34:13,486 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:13,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:13,487 INFO L85 PathProgramCache]: Analyzing trace with hash 435553640, now seen corresponding path program 5 times [2024-06-28 01:34:13,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:13,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348157523] [2024-06-28 01:34:13,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:13,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:14,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:14,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348157523] [2024-06-28 01:34:14,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348157523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:14,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:14,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:14,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541180673] [2024-06-28 01:34:14,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:14,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:14,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:14,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:14,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:14,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 400 transitions, 6109 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:14,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:14,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:14,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:15,173 INFO L124 PetriNetUnfolderBase]: 2097/4153 cut-off events. [2024-06-28 01:34:15,174 INFO L125 PetriNetUnfolderBase]: For 85880/85880 co-relation queries the response was YES. [2024-06-28 01:34:15,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26761 conditions, 4153 events. 2097/4153 cut-off events. For 85880/85880 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 31520 event pairs, 452 based on Foata normal form. 3/3978 useless extension candidates. Maximal degree in co-relation 26645. Up to 2398 conditions per place. [2024-06-28 01:34:15,215 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 295 selfloop transitions, 142 changer transitions 0/444 dead transitions. [2024-06-28 01:34:15,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 444 transitions, 7437 flow [2024-06-28 01:34:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 01:34:15,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216216216216216 [2024-06-28 01:34:15,217 INFO L175 Difference]: Start difference. First operand has 250 places, 400 transitions, 6109 flow. Second operand 10 states and 193 transitions. [2024-06-28 01:34:15,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 444 transitions, 7437 flow [2024-06-28 01:34:15,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 444 transitions, 7147 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:15,630 INFO L231 Difference]: Finished difference. Result has 251 places, 400 transitions, 6109 flow [2024-06-28 01:34:15,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5819, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6109, PETRI_PLACES=251, PETRI_TRANSITIONS=400} [2024-06-28 01:34:15,631 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-28 01:34:15,631 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 400 transitions, 6109 flow [2024-06-28 01:34:15,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:15,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:15,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:15,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:34:15,632 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:15,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:15,632 INFO L85 PathProgramCache]: Analyzing trace with hash -588179604, now seen corresponding path program 7 times [2024-06-28 01:34:15,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:15,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597456346] [2024-06-28 01:34:15,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:16,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:16,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597456346] [2024-06-28 01:34:16,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597456346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:16,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:16,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:16,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353142026] [2024-06-28 01:34:16,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:16,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:16,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:16,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:16,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:16,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:16,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 400 transitions, 6109 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:16,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:16,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:16,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:17,702 INFO L124 PetriNetUnfolderBase]: 2029/4070 cut-off events. [2024-06-28 01:34:17,703 INFO L125 PetriNetUnfolderBase]: For 89764/89803 co-relation queries the response was YES. [2024-06-28 01:34:17,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26285 conditions, 4070 events. 2029/4070 cut-off events. For 89764/89803 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 31217 event pairs, 299 based on Foata normal form. 14/3910 useless extension candidates. Maximal degree in co-relation 26168. Up to 2313 conditions per place. [2024-06-28 01:34:17,744 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 257 selfloop transitions, 131 changer transitions 0/447 dead transitions. [2024-06-28 01:34:17,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 447 transitions, 7385 flow [2024-06-28 01:34:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:34:17,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-28 01:34:17,745 INFO L175 Difference]: Start difference. First operand has 251 places, 400 transitions, 6109 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:34:17,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 447 transitions, 7385 flow [2024-06-28 01:34:18,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 447 transitions, 7062 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:34:18,052 INFO L231 Difference]: Finished difference. Result has 252 places, 402 transitions, 6095 flow [2024-06-28 01:34:18,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5786, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6095, PETRI_PLACES=252, PETRI_TRANSITIONS=402} [2024-06-28 01:34:18,053 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-28 01:34:18,053 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 402 transitions, 6095 flow [2024-06-28 01:34:18,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:18,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:18,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:18,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:34:18,054 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:18,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2015278826, now seen corresponding path program 1 times [2024-06-28 01:34:18,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:18,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517988651] [2024-06-28 01:34:18,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:18,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:18,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:18,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517988651] [2024-06-28 01:34:18,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517988651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:18,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:18,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:18,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405200121] [2024-06-28 01:34:18,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:18,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:18,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:18,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:18,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:18,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:18,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 402 transitions, 6095 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:18,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:18,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:18,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:20,194 INFO L124 PetriNetUnfolderBase]: 2156/4337 cut-off events. [2024-06-28 01:34:20,194 INFO L125 PetriNetUnfolderBase]: For 92338/92338 co-relation queries the response was YES. [2024-06-28 01:34:20,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27662 conditions, 4337 events. 2156/4337 cut-off events. For 92338/92338 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 33552 event pairs, 513 based on Foata normal form. 3/4145 useless extension candidates. Maximal degree in co-relation 27544. Up to 3156 conditions per place. [2024-06-28 01:34:20,236 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 369 selfloop transitions, 80 changer transitions 0/456 dead transitions. [2024-06-28 01:34:20,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 456 transitions, 7535 flow [2024-06-28 01:34:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:34:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:34:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 227 transitions. [2024-06-28 01:34:20,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47193347193347196 [2024-06-28 01:34:20,238 INFO L175 Difference]: Start difference. First operand has 252 places, 402 transitions, 6095 flow. Second operand 13 states and 227 transitions. [2024-06-28 01:34:20,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 456 transitions, 7535 flow [2024-06-28 01:34:20,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 456 transitions, 7294 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:20,555 INFO L231 Difference]: Finished difference. Result has 256 places, 405 transitions, 6069 flow [2024-06-28 01:34:20,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5860, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6069, PETRI_PLACES=256, PETRI_TRANSITIONS=405} [2024-06-28 01:34:20,555 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 215 predicate places. [2024-06-28 01:34:20,556 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 405 transitions, 6069 flow [2024-06-28 01:34:20,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:20,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:20,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:20,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:34:20,556 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:20,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:20,557 INFO L85 PathProgramCache]: Analyzing trace with hash -588119154, now seen corresponding path program 8 times [2024-06-28 01:34:20,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:20,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956627560] [2024-06-28 01:34:20,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:20,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956627560] [2024-06-28 01:34:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956627560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:21,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:21,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:21,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402210837] [2024-06-28 01:34:21,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:21,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:21,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:21,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:21,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:21,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:21,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 405 transitions, 6069 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:21,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:21,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:21,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:22,637 INFO L124 PetriNetUnfolderBase]: 2159/4438 cut-off events. [2024-06-28 01:34:22,637 INFO L125 PetriNetUnfolderBase]: For 88453/88491 co-relation queries the response was YES. [2024-06-28 01:34:22,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27812 conditions, 4438 events. 2159/4438 cut-off events. For 88453/88491 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 35380 event pairs, 468 based on Foata normal form. 15/4245 useless extension candidates. Maximal degree in co-relation 27695. Up to 2928 conditions per place. [2024-06-28 01:34:22,687 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 278 selfloop transitions, 120 changer transitions 0/457 dead transitions. [2024-06-28 01:34:22,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 457 transitions, 7350 flow [2024-06-28 01:34:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-28 01:34:22,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:34:22,688 INFO L175 Difference]: Start difference. First operand has 256 places, 405 transitions, 6069 flow. Second operand 11 states and 198 transitions. [2024-06-28 01:34:22,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 457 transitions, 7350 flow [2024-06-28 01:34:23,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 457 transitions, 7180 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 01:34:23,024 INFO L231 Difference]: Finished difference. Result has 257 places, 414 transitions, 6301 flow [2024-06-28 01:34:23,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5899, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6301, PETRI_PLACES=257, PETRI_TRANSITIONS=414} [2024-06-28 01:34:23,024 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-28 01:34:23,024 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 414 transitions, 6301 flow [2024-06-28 01:34:23,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:23,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:23,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:23,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:34:23,025 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:23,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:23,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1245998726, now seen corresponding path program 2 times [2024-06-28 01:34:23,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:23,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711983094] [2024-06-28 01:34:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:23,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711983094] [2024-06-28 01:34:23,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711983094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:23,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:23,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:23,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894628664] [2024-06-28 01:34:23,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:23,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:23,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:23,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:23,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 414 transitions, 6301 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:23,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:23,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:23,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:25,275 INFO L124 PetriNetUnfolderBase]: 2318/4724 cut-off events. [2024-06-28 01:34:25,276 INFO L125 PetriNetUnfolderBase]: For 94960/94960 co-relation queries the response was YES. [2024-06-28 01:34:25,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29633 conditions, 4724 events. 2318/4724 cut-off events. For 94960/94960 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 37675 event pairs, 591 based on Foata normal form. 3/4505 useless extension candidates. Maximal degree in co-relation 29515. Up to 3311 conditions per place. [2024-06-28 01:34:25,322 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 369 selfloop transitions, 101 changer transitions 0/477 dead transitions. [2024-06-28 01:34:25,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 477 transitions, 7753 flow [2024-06-28 01:34:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:34:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:34:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 241 transitions. [2024-06-28 01:34:25,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46525096525096526 [2024-06-28 01:34:25,323 INFO L175 Difference]: Start difference. First operand has 257 places, 414 transitions, 6301 flow. Second operand 14 states and 241 transitions. [2024-06-28 01:34:25,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 477 transitions, 7753 flow [2024-06-28 01:34:25,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 477 transitions, 7520 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:25,653 INFO L231 Difference]: Finished difference. Result has 262 places, 420 transitions, 6357 flow [2024-06-28 01:34:25,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6068, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6357, PETRI_PLACES=262, PETRI_TRANSITIONS=420} [2024-06-28 01:34:25,654 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-28 01:34:25,654 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 420 transitions, 6357 flow [2024-06-28 01:34:25,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:25,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:25,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:25,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:34:25,655 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:25,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash -588119030, now seen corresponding path program 5 times [2024-06-28 01:34:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:25,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974761922] [2024-06-28 01:34:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:25,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:26,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:26,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974761922] [2024-06-28 01:34:26,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974761922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:26,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:26,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:26,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248000854] [2024-06-28 01:34:26,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:26,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:26,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:26,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:26,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:26,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:26,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 420 transitions, 6357 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:26,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:26,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:26,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:27,933 INFO L124 PetriNetUnfolderBase]: 2395/4795 cut-off events. [2024-06-28 01:34:27,933 INFO L125 PetriNetUnfolderBase]: For 95111/95111 co-relation queries the response was YES. [2024-06-28 01:34:27,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30815 conditions, 4795 events. 2395/4795 cut-off events. For 95111/95111 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 38041 event pairs, 779 based on Foata normal form. 1/4587 useless extension candidates. Maximal degree in co-relation 30696. Up to 3608 conditions per place. [2024-06-28 01:34:27,977 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 399 selfloop transitions, 85 changer transitions 0/491 dead transitions. [2024-06-28 01:34:27,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 491 transitions, 8158 flow [2024-06-28 01:34:27,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:34:27,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:34:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 01:34:27,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2024-06-28 01:34:27,978 INFO L175 Difference]: Start difference. First operand has 262 places, 420 transitions, 6357 flow. Second operand 12 states and 195 transitions. [2024-06-28 01:34:27,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 491 transitions, 8158 flow [2024-06-28 01:34:28,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 491 transitions, 7910 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-28 01:34:28,327 INFO L231 Difference]: Finished difference. Result has 265 places, 449 transitions, 6932 flow [2024-06-28 01:34:28,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6136, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6932, PETRI_PLACES=265, PETRI_TRANSITIONS=449} [2024-06-28 01:34:28,328 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-28 01:34:28,328 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 449 transitions, 6932 flow [2024-06-28 01:34:28,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:28,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:28,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:28,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:34:28,329 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:28,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:28,329 INFO L85 PathProgramCache]: Analyzing trace with hash -420058088, now seen corresponding path program 6 times [2024-06-28 01:34:28,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:28,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381339201] [2024-06-28 01:34:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:28,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:29,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:29,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381339201] [2024-06-28 01:34:29,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381339201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:29,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:29,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:29,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377742190] [2024-06-28 01:34:29,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:29,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:29,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:29,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:29,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:29,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:29,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 449 transitions, 6932 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:29,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:29,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:29,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:30,243 INFO L124 PetriNetUnfolderBase]: 2418/4914 cut-off events. [2024-06-28 01:34:30,243 INFO L125 PetriNetUnfolderBase]: For 100091/100091 co-relation queries the response was YES. [2024-06-28 01:34:30,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31246 conditions, 4914 events. 2418/4914 cut-off events. For 100091/100091 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 39472 event pairs, 592 based on Foata normal form. 3/4688 useless extension candidates. Maximal degree in co-relation 31123. Up to 3546 conditions per place. [2024-06-28 01:34:30,286 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 383 selfloop transitions, 96 changer transitions 0/486 dead transitions. [2024-06-28 01:34:30,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 486 transitions, 8236 flow [2024-06-28 01:34:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:34:30,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-28 01:34:30,287 INFO L175 Difference]: Start difference. First operand has 265 places, 449 transitions, 6932 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:34:30,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 486 transitions, 8236 flow [2024-06-28 01:34:30,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 486 transitions, 8027 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:30,597 INFO L231 Difference]: Finished difference. Result has 267 places, 451 transitions, 6986 flow [2024-06-28 01:34:30,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6723, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6986, PETRI_PLACES=267, PETRI_TRANSITIONS=451} [2024-06-28 01:34:30,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-28 01:34:30,597 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 451 transitions, 6986 flow [2024-06-28 01:34:30,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:30,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:30,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:30,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:34:30,598 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:30,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:30,599 INFO L85 PathProgramCache]: Analyzing trace with hash 43095444, now seen corresponding path program 9 times [2024-06-28 01:34:30,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:30,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579927113] [2024-06-28 01:34:30,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:30,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:31,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:31,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579927113] [2024-06-28 01:34:31,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579927113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:31,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:31,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:31,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331070453] [2024-06-28 01:34:31,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:31,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:31,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:31,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:31,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:31,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:31,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 451 transitions, 6986 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:31,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:31,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:31,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:32,739 INFO L124 PetriNetUnfolderBase]: 2309/4727 cut-off events. [2024-06-28 01:34:32,739 INFO L125 PetriNetUnfolderBase]: For 96442/96486 co-relation queries the response was YES. [2024-06-28 01:34:32,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30358 conditions, 4727 events. 2309/4727 cut-off events. For 96442/96486 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 38199 event pairs, 587 based on Foata normal form. 20/4533 useless extension candidates. Maximal degree in co-relation 30234. Up to 3290 conditions per place. [2024-06-28 01:34:32,784 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 336 selfloop transitions, 89 changer transitions 0/487 dead transitions. [2024-06-28 01:34:32,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 487 transitions, 8156 flow [2024-06-28 01:34:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:32,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:34:32,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-28 01:34:32,786 INFO L175 Difference]: Start difference. First operand has 267 places, 451 transitions, 6986 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:34:32,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 487 transitions, 8156 flow [2024-06-28 01:34:33,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 487 transitions, 7918 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:33,126 INFO L231 Difference]: Finished difference. Result has 268 places, 452 transitions, 6971 flow [2024-06-28 01:34:33,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6758, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6971, PETRI_PLACES=268, PETRI_TRANSITIONS=452} [2024-06-28 01:34:33,126 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-28 01:34:33,126 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 452 transitions, 6971 flow [2024-06-28 01:34:33,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:33,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:33,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:33,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:34:33,127 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:33,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:33,127 INFO L85 PathProgramCache]: Analyzing trace with hash 158571064, now seen corresponding path program 7 times [2024-06-28 01:34:33,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:33,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842972673] [2024-06-28 01:34:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:33,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:33,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:33,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842972673] [2024-06-28 01:34:33,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842972673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:33,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:33,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:33,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580056614] [2024-06-28 01:34:33,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:33,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:33,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:33,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:33,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 452 transitions, 6971 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:33,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:33,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:33,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:35,154 INFO L124 PetriNetUnfolderBase]: 2688/5317 cut-off events. [2024-06-28 01:34:35,154 INFO L125 PetriNetUnfolderBase]: For 112972/112972 co-relation queries the response was YES. [2024-06-28 01:34:35,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34308 conditions, 5317 events. 2688/5317 cut-off events. For 112972/112972 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 42753 event pairs, 846 based on Foata normal form. 3/5096 useless extension candidates. Maximal degree in co-relation 34184. Up to 3277 conditions per place. [2024-06-28 01:34:35,207 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 392 selfloop transitions, 139 changer transitions 0/538 dead transitions. [2024-06-28 01:34:35,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 538 transitions, 9238 flow [2024-06-28 01:34:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:35,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 01:34:35,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-28 01:34:35,208 INFO L175 Difference]: Start difference. First operand has 268 places, 452 transitions, 6971 flow. Second operand 10 states and 179 transitions. [2024-06-28 01:34:35,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 538 transitions, 9238 flow [2024-06-28 01:34:35,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 538 transitions, 9061 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:35,637 INFO L231 Difference]: Finished difference. Result has 272 places, 477 transitions, 7488 flow [2024-06-28 01:34:35,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6794, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7488, PETRI_PLACES=272, PETRI_TRANSITIONS=477} [2024-06-28 01:34:35,638 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 231 predicate places. [2024-06-28 01:34:35,638 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 477 transitions, 7488 flow [2024-06-28 01:34:35,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:35,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:35,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:35,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:34:35,639 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:35,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:35,639 INFO L85 PathProgramCache]: Analyzing trace with hash 158564368, now seen corresponding path program 6 times [2024-06-28 01:34:35,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:35,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370144481] [2024-06-28 01:34:35,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:35,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:36,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:36,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370144481] [2024-06-28 01:34:36,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370144481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:36,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:36,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:36,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009883588] [2024-06-28 01:34:36,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:36,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:36,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:36,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:36,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:36,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:36,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 477 transitions, 7488 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:36,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:36,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:36,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:37,894 INFO L124 PetriNetUnfolderBase]: 2714/5315 cut-off events. [2024-06-28 01:34:37,894 INFO L125 PetriNetUnfolderBase]: For 114228/114228 co-relation queries the response was YES. [2024-06-28 01:34:37,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35393 conditions, 5315 events. 2714/5315 cut-off events. For 114228/114228 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 42218 event pairs, 591 based on Foata normal form. 1/5102 useless extension candidates. Maximal degree in co-relation 35267. Up to 3792 conditions per place. [2024-06-28 01:34:37,952 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 357 selfloop transitions, 171 changer transitions 0/535 dead transitions. [2024-06-28 01:34:37,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 535 transitions, 9358 flow [2024-06-28 01:34:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:37,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 01:34:37,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-28 01:34:37,953 INFO L175 Difference]: Start difference. First operand has 272 places, 477 transitions, 7488 flow. Second operand 9 states and 161 transitions. [2024-06-28 01:34:37,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 535 transitions, 9358 flow [2024-06-28 01:34:38,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 535 transitions, 9162 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:38,580 INFO L231 Difference]: Finished difference. Result has 278 places, 489 transitions, 8040 flow [2024-06-28 01:34:38,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7292, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8040, PETRI_PLACES=278, PETRI_TRANSITIONS=489} [2024-06-28 01:34:38,580 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 237 predicate places. [2024-06-28 01:34:38,580 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 489 transitions, 8040 flow [2024-06-28 01:34:38,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:38,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:38,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:38,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:34:38,581 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:38,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:38,581 INFO L85 PathProgramCache]: Analyzing trace with hash 158564554, now seen corresponding path program 8 times [2024-06-28 01:34:38,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:38,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676993528] [2024-06-28 01:34:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:38,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:39,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:39,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676993528] [2024-06-28 01:34:39,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676993528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:39,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:39,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:39,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197678759] [2024-06-28 01:34:39,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:39,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:39,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:39,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:39,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:39,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 489 transitions, 8040 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:39,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:39,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:39,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:40,476 INFO L124 PetriNetUnfolderBase]: 2768/5471 cut-off events. [2024-06-28 01:34:40,476 INFO L125 PetriNetUnfolderBase]: For 122352/122352 co-relation queries the response was YES. [2024-06-28 01:34:40,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36639 conditions, 5471 events. 2768/5471 cut-off events. For 122352/122352 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 44120 event pairs, 859 based on Foata normal form. 3/5243 useless extension candidates. Maximal degree in co-relation 36509. Up to 3359 conditions per place. [2024-06-28 01:34:40,538 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 422 selfloop transitions, 134 changer transitions 0/563 dead transitions. [2024-06-28 01:34:40,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 563 transitions, 10252 flow [2024-06-28 01:34:40,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:40,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:34:40,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-28 01:34:40,539 INFO L175 Difference]: Start difference. First operand has 278 places, 489 transitions, 8040 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:34:40,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 563 transitions, 10252 flow [2024-06-28 01:34:41,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 563 transitions, 10108 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-28 01:34:41,063 INFO L231 Difference]: Finished difference. Result has 285 places, 494 transitions, 8263 flow [2024-06-28 01:34:41,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7900, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8263, PETRI_PLACES=285, PETRI_TRANSITIONS=494} [2024-06-28 01:34:41,064 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-28 01:34:41,064 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 494 transitions, 8263 flow [2024-06-28 01:34:41,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:41,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:41,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:41,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:34:41,065 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:41,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:41,065 INFO L85 PathProgramCache]: Analyzing trace with hash 158391574, now seen corresponding path program 9 times [2024-06-28 01:34:41,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:41,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611222105] [2024-06-28 01:34:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:41,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:41,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611222105] [2024-06-28 01:34:41,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611222105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:41,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:41,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:41,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958905953] [2024-06-28 01:34:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:41,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:41,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:41,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:41,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:41,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:41,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 494 transitions, 8263 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:41,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:41,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:41,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:42,995 INFO L124 PetriNetUnfolderBase]: 2762/5446 cut-off events. [2024-06-28 01:34:42,996 INFO L125 PetriNetUnfolderBase]: For 119541/119541 co-relation queries the response was YES. [2024-06-28 01:34:43,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36827 conditions, 5446 events. 2762/5446 cut-off events. For 119541/119541 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 43884 event pairs, 859 based on Foata normal form. 3/5222 useless extension candidates. Maximal degree in co-relation 36696. Up to 3355 conditions per place. [2024-06-28 01:34:43,053 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 424 selfloop transitions, 128 changer transitions 0/559 dead transitions. [2024-06-28 01:34:43,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 559 transitions, 10226 flow [2024-06-28 01:34:43,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:34:43,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-28 01:34:43,055 INFO L175 Difference]: Start difference. First operand has 285 places, 494 transitions, 8263 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:34:43,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 559 transitions, 10226 flow [2024-06-28 01:34:43,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 559 transitions, 10002 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:43,475 INFO L231 Difference]: Finished difference. Result has 290 places, 495 transitions, 8368 flow [2024-06-28 01:34:43,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8039, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8368, PETRI_PLACES=290, PETRI_TRANSITIONS=495} [2024-06-28 01:34:43,475 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2024-06-28 01:34:43,476 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 495 transitions, 8368 flow [2024-06-28 01:34:43,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:43,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:43,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:43,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:34:43,476 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:43,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:43,476 INFO L85 PathProgramCache]: Analyzing trace with hash -304767104, now seen corresponding path program 7 times [2024-06-28 01:34:43,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:43,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104121535] [2024-06-28 01:34:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:43,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:44,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:44,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104121535] [2024-06-28 01:34:44,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104121535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:44,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:44,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:44,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261722975] [2024-06-28 01:34:44,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:44,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:44,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:44,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:44,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:44,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:44,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 495 transitions, 8368 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:44,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:44,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:44,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:45,678 INFO L124 PetriNetUnfolderBase]: 2779/5406 cut-off events. [2024-06-28 01:34:45,678 INFO L125 PetriNetUnfolderBase]: For 118480/118480 co-relation queries the response was YES. [2024-06-28 01:34:45,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37076 conditions, 5406 events. 2779/5406 cut-off events. For 118480/118480 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 42911 event pairs, 446 based on Foata normal form. 1/5174 useless extension candidates. Maximal degree in co-relation 36943. Up to 3419 conditions per place. [2024-06-28 01:34:45,733 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 381 selfloop transitions, 152 changer transitions 0/540 dead transitions. [2024-06-28 01:34:45,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 540 transitions, 10118 flow [2024-06-28 01:34:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 01:34:45,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-28 01:34:45,734 INFO L175 Difference]: Start difference. First operand has 290 places, 495 transitions, 8368 flow. Second operand 8 states and 150 transitions. [2024-06-28 01:34:45,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 540 transitions, 10118 flow [2024-06-28 01:34:46,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 540 transitions, 9920 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:46,273 INFO L231 Difference]: Finished difference. Result has 293 places, 502 transitions, 8703 flow [2024-06-28 01:34:46,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8170, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8703, PETRI_PLACES=293, PETRI_TRANSITIONS=502} [2024-06-28 01:34:46,274 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-28 01:34:46,274 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 502 transitions, 8703 flow [2024-06-28 01:34:46,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:46,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:46,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:46,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:34:46,274 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:46,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:46,274 INFO L85 PathProgramCache]: Analyzing trace with hash -304771878, now seen corresponding path program 10 times [2024-06-28 01:34:46,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:46,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111437887] [2024-06-28 01:34:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:46,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:47,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:47,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111437887] [2024-06-28 01:34:47,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111437887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:47,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:47,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:47,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664142842] [2024-06-28 01:34:47,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:47,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:47,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:47,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:47,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:47,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:34:47,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 502 transitions, 8703 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:47,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:47,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:34:47,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:48,444 INFO L124 PetriNetUnfolderBase]: 2672/5383 cut-off events. [2024-06-28 01:34:48,445 INFO L125 PetriNetUnfolderBase]: For 124634/124681 co-relation queries the response was YES. [2024-06-28 01:34:48,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36503 conditions, 5383 events. 2672/5383 cut-off events. For 124634/124681 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 44079 event pairs, 626 based on Foata normal form. 21/5160 useless extension candidates. Maximal degree in co-relation 36368. Up to 3882 conditions per place. [2024-06-28 01:34:48,496 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 380 selfloop transitions, 90 changer transitions 0/540 dead transitions. [2024-06-28 01:34:48,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 540 transitions, 10059 flow [2024-06-28 01:34:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:48,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:34:48,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-28 01:34:48,497 INFO L175 Difference]: Start difference. First operand has 293 places, 502 transitions, 8703 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:34:48,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 540 transitions, 10059 flow [2024-06-28 01:34:48,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 540 transitions, 9909 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:48,953 INFO L231 Difference]: Finished difference. Result has 297 places, 503 transitions, 8765 flow [2024-06-28 01:34:48,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8553, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8765, PETRI_PLACES=297, PETRI_TRANSITIONS=503} [2024-06-28 01:34:48,954 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-28 01:34:48,954 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 503 transitions, 8765 flow [2024-06-28 01:34:48,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:48,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:48,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:48,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:34:48,955 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:48,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:48,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1318503254, now seen corresponding path program 10 times [2024-06-28 01:34:48,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:48,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338367492] [2024-06-28 01:34:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:48,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:49,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:49,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338367492] [2024-06-28 01:34:49,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338367492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:49,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:49,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:49,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126835168] [2024-06-28 01:34:49,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:49,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:49,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:49,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:49,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:49,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:49,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 503 transitions, 8765 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:49,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:49,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:49,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:51,092 INFO L124 PetriNetUnfolderBase]: 2909/5739 cut-off events. [2024-06-28 01:34:51,092 INFO L125 PetriNetUnfolderBase]: For 136620/136620 co-relation queries the response was YES. [2024-06-28 01:34:51,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39568 conditions, 5739 events. 2909/5739 cut-off events. For 136620/136620 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 46706 event pairs, 972 based on Foata normal form. 3/5500 useless extension candidates. Maximal degree in co-relation 39433. Up to 4136 conditions per place. [2024-06-28 01:34:51,145 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 504 selfloop transitions, 64 changer transitions 0/575 dead transitions. [2024-06-28 01:34:51,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 575 transitions, 11062 flow [2024-06-28 01:34:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:51,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:51,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:34:51,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-28 01:34:51,146 INFO L175 Difference]: Start difference. First operand has 297 places, 503 transitions, 8765 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:34:51,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 575 transitions, 11062 flow [2024-06-28 01:34:51,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 575 transitions, 10858 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:51,638 INFO L231 Difference]: Finished difference. Result has 299 places, 513 transitions, 8899 flow [2024-06-28 01:34:51,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8565, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8899, PETRI_PLACES=299, PETRI_TRANSITIONS=513} [2024-06-28 01:34:51,639 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-28 01:34:51,639 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 513 transitions, 8899 flow [2024-06-28 01:34:51,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:51,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:51,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:51,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:34:51,639 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:51,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash -138954804, now seen corresponding path program 11 times [2024-06-28 01:34:51,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:51,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115926947] [2024-06-28 01:34:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:51,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:52,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:52,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115926947] [2024-06-28 01:34:52,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115926947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:52,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:52,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161115512] [2024-06-28 01:34:52,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:52,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:52,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:52,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:52,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 513 transitions, 8899 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:52,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:52,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:52,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:53,649 INFO L124 PetriNetUnfolderBase]: 2963/5848 cut-off events. [2024-06-28 01:34:53,649 INFO L125 PetriNetUnfolderBase]: For 138526/138526 co-relation queries the response was YES. [2024-06-28 01:34:53,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40196 conditions, 5848 events. 2963/5848 cut-off events. For 138526/138526 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 47667 event pairs, 980 based on Foata normal form. 3/5603 useless extension candidates. Maximal degree in co-relation 40060. Up to 4176 conditions per place. [2024-06-28 01:34:53,711 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 515 selfloop transitions, 66 changer transitions 0/588 dead transitions. [2024-06-28 01:34:53,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 588 transitions, 11268 flow [2024-06-28 01:34:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:34:53,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-28 01:34:53,713 INFO L175 Difference]: Start difference. First operand has 299 places, 513 transitions, 8899 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:34:53,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 588 transitions, 11268 flow [2024-06-28 01:34:54,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 588 transitions, 10972 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:54,433 INFO L231 Difference]: Finished difference. Result has 301 places, 518 transitions, 8853 flow [2024-06-28 01:34:54,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8638, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8853, PETRI_PLACES=301, PETRI_TRANSITIONS=518} [2024-06-28 01:34:54,433 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-28 01:34:54,434 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 518 transitions, 8853 flow [2024-06-28 01:34:54,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:54,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:54,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:54,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:34:54,434 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:54,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:54,434 INFO L85 PathProgramCache]: Analyzing trace with hash 297444432, now seen corresponding path program 8 times [2024-06-28 01:34:54,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:54,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554814014] [2024-06-28 01:34:54,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:54,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:55,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554814014] [2024-06-28 01:34:55,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554814014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:55,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:55,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:55,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289783719] [2024-06-28 01:34:55,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:55,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:55,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:55,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:55,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 518 transitions, 8853 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:55,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:55,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:55,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:56,512 INFO L124 PetriNetUnfolderBase]: 2986/5871 cut-off events. [2024-06-28 01:34:56,512 INFO L125 PetriNetUnfolderBase]: For 131942/131942 co-relation queries the response was YES. [2024-06-28 01:34:56,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40133 conditions, 5871 events. 2986/5871 cut-off events. For 131942/131942 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 47759 event pairs, 962 based on Foata normal form. 1/5627 useless extension candidates. Maximal degree in co-relation 39996. Up to 4633 conditions per place. [2024-06-28 01:34:56,583 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 502 selfloop transitions, 61 changer transitions 0/570 dead transitions. [2024-06-28 01:34:56,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 570 transitions, 10680 flow [2024-06-28 01:34:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:56,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:34:56,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:34:56,584 INFO L175 Difference]: Start difference. First operand has 301 places, 518 transitions, 8853 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:34:56,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 570 transitions, 10680 flow [2024-06-28 01:34:57,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 570 transitions, 10540 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:57,327 INFO L231 Difference]: Finished difference. Result has 306 places, 528 transitions, 9104 flow [2024-06-28 01:34:57,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8713, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9104, PETRI_PLACES=306, PETRI_TRANSITIONS=528} [2024-06-28 01:34:57,328 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-28 01:34:57,328 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 528 transitions, 9104 flow [2024-06-28 01:34:57,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:57,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:57,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:57,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:34:57,329 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:57,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:57,329 INFO L85 PathProgramCache]: Analyzing trace with hash 324025872, now seen corresponding path program 9 times [2024-06-28 01:34:57,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:57,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744632510] [2024-06-28 01:34:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:57,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:58,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744632510] [2024-06-28 01:34:58,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744632510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:58,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:58,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992916949] [2024-06-28 01:34:58,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:58,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:58,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:58,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:58,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:58,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:34:58,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 528 transitions, 9104 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:58,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:58,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:34:58,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:59,589 INFO L124 PetriNetUnfolderBase]: 3006/5897 cut-off events. [2024-06-28 01:34:59,589 INFO L125 PetriNetUnfolderBase]: For 134904/134904 co-relation queries the response was YES. [2024-06-28 01:34:59,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40495 conditions, 5897 events. 3006/5897 cut-off events. For 134904/134904 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 47943 event pairs, 958 based on Foata normal form. 1/5655 useless extension candidates. Maximal degree in co-relation 40355. Up to 4602 conditions per place. [2024-06-28 01:34:59,655 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 495 selfloop transitions, 74 changer transitions 0/576 dead transitions. [2024-06-28 01:34:59,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 576 transitions, 11002 flow [2024-06-28 01:34:59,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:34:59,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:34:59,656 INFO L175 Difference]: Start difference. First operand has 306 places, 528 transitions, 9104 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:34:59,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 576 transitions, 11002 flow [2024-06-28 01:35:00,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 576 transitions, 10694 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:00,312 INFO L231 Difference]: Finished difference. Result has 311 places, 538 transitions, 9255 flow [2024-06-28 01:35:00,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8822, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9255, PETRI_PLACES=311, PETRI_TRANSITIONS=538} [2024-06-28 01:35:00,312 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-28 01:35:00,313 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 538 transitions, 9255 flow [2024-06-28 01:35:00,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:00,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:00,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:00,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:35:00,313 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:00,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash 297271452, now seen corresponding path program 10 times [2024-06-28 01:35:00,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:00,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8712858] [2024-06-28 01:35:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:00,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:01,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:01,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8712858] [2024-06-28 01:35:01,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8712858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:01,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:01,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138521751] [2024-06-28 01:35:01,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:01,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:01,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:01,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:01,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:01,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 538 transitions, 9255 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:01,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:01,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:01,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:02,381 INFO L124 PetriNetUnfolderBase]: 3020/5940 cut-off events. [2024-06-28 01:35:02,381 INFO L125 PetriNetUnfolderBase]: For 137367/137367 co-relation queries the response was YES. [2024-06-28 01:35:02,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40863 conditions, 5940 events. 3020/5940 cut-off events. For 137367/137367 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 48494 event pairs, 961 based on Foata normal form. 1/5692 useless extension candidates. Maximal degree in co-relation 40721. Up to 4687 conditions per place. [2024-06-28 01:35:02,447 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 506 selfloop transitions, 67 changer transitions 0/580 dead transitions. [2024-06-28 01:35:02,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 580 transitions, 10936 flow [2024-06-28 01:35:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:02,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:35:02,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-28 01:35:02,448 INFO L175 Difference]: Start difference. First operand has 311 places, 538 transitions, 9255 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:35:02,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 580 transitions, 10936 flow [2024-06-28 01:35:03,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 580 transitions, 10744 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-28 01:35:03,117 INFO L231 Difference]: Finished difference. Result has 318 places, 543 transitions, 9375 flow [2024-06-28 01:35:03,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9099, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9375, PETRI_PLACES=318, PETRI_TRANSITIONS=543} [2024-06-28 01:35:03,118 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-28 01:35:03,118 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 543 transitions, 9375 flow [2024-06-28 01:35:03,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:03,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:03,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:03,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:35:03,118 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:03,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:03,119 INFO L85 PathProgramCache]: Analyzing trace with hash 297266678, now seen corresponding path program 11 times [2024-06-28 01:35:03,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:03,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179977106] [2024-06-28 01:35:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:03,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:03,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:03,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179977106] [2024-06-28 01:35:03,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179977106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:03,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:03,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:03,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057648974] [2024-06-28 01:35:03,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:03,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:03,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:03,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:03,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:04,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:35:04,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 543 transitions, 9375 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:04,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:04,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:35:04,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:05,446 INFO L124 PetriNetUnfolderBase]: 2879/5782 cut-off events. [2024-06-28 01:35:05,446 INFO L125 PetriNetUnfolderBase]: For 134922/134956 co-relation queries the response was YES. [2024-06-28 01:35:05,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39274 conditions, 5782 events. 2879/5782 cut-off events. For 134922/134956 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 47862 event pairs, 926 based on Foata normal form. 4/5536 useless extension candidates. Maximal degree in co-relation 39129. Up to 4440 conditions per place. [2024-06-28 01:35:05,507 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 470 selfloop transitions, 24 changer transitions 0/575 dead transitions. [2024-06-28 01:35:05,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 575 transitions, 10703 flow [2024-06-28 01:35:05,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:35:05,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-28 01:35:05,508 INFO L175 Difference]: Start difference. First operand has 318 places, 543 transitions, 9375 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:35:05,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 575 transitions, 10703 flow [2024-06-28 01:35:06,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 575 transitions, 10535 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:06,160 INFO L231 Difference]: Finished difference. Result has 321 places, 544 transitions, 9289 flow [2024-06-28 01:35:06,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9207, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9289, PETRI_PLACES=321, PETRI_TRANSITIONS=544} [2024-06-28 01:35:06,160 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-28 01:35:06,161 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 544 transitions, 9289 flow [2024-06-28 01:35:06,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:06,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:06,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:06,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:35:06,161 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:06,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:06,161 INFO L85 PathProgramCache]: Analyzing trace with hash 297271638, now seen corresponding path program 12 times [2024-06-28 01:35:06,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:06,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403079265] [2024-06-28 01:35:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:06,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:06,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:06,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403079265] [2024-06-28 01:35:06,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403079265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:06,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:06,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910278635] [2024-06-28 01:35:06,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:06,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:06,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:06,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:06,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 544 transitions, 9289 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:06,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:06,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:06,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:08,326 INFO L124 PetriNetUnfolderBase]: 3015/5921 cut-off events. [2024-06-28 01:35:08,326 INFO L125 PetriNetUnfolderBase]: For 134898/134898 co-relation queries the response was YES. [2024-06-28 01:35:08,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40390 conditions, 5921 events. 3015/5921 cut-off events. For 134898/134898 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 48255 event pairs, 974 based on Foata normal form. 3/5679 useless extension candidates. Maximal degree in co-relation 40244. Up to 4266 conditions per place. [2024-06-28 01:35:08,400 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 515 selfloop transitions, 75 changer transitions 0/597 dead transitions. [2024-06-28 01:35:08,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 597 transitions, 11220 flow [2024-06-28 01:35:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:08,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:35:08,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:35:08,401 INFO L175 Difference]: Start difference. First operand has 321 places, 544 transitions, 9289 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:35:08,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 597 transitions, 11220 flow [2024-06-28 01:35:09,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 597 transitions, 11118 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:09,055 INFO L231 Difference]: Finished difference. Result has 323 places, 544 transitions, 9347 flow [2024-06-28 01:35:09,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9187, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9347, PETRI_PLACES=323, PETRI_TRANSITIONS=544} [2024-06-28 01:35:09,056 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-28 01:35:09,056 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 544 transitions, 9347 flow [2024-06-28 01:35:09,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:09,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:09,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:09,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:35:09,057 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:09,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:09,057 INFO L85 PathProgramCache]: Analyzing trace with hash 553051212, now seen corresponding path program 11 times [2024-06-28 01:35:09,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:09,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176591814] [2024-06-28 01:35:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:09,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:09,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:09,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176591814] [2024-06-28 01:35:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176591814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:09,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:09,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961455226] [2024-06-28 01:35:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:09,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:09,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:09,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:09,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:09,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:09,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 544 transitions, 9347 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:09,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:09,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:09,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:11,232 INFO L124 PetriNetUnfolderBase]: 3013/5922 cut-off events. [2024-06-28 01:35:11,232 INFO L125 PetriNetUnfolderBase]: For 130914/130914 co-relation queries the response was YES. [2024-06-28 01:35:11,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40406 conditions, 5922 events. 3013/5922 cut-off events. For 130914/130914 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 48336 event pairs, 986 based on Foata normal form. 1/5677 useless extension candidates. Maximal degree in co-relation 40259. Up to 4796 conditions per place. [2024-06-28 01:35:11,305 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 539 selfloop transitions, 26 changer transitions 0/572 dead transitions. [2024-06-28 01:35:11,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 572 transitions, 10757 flow [2024-06-28 01:35:11,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:11,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:35:11,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:35:11,306 INFO L175 Difference]: Start difference. First operand has 323 places, 544 transitions, 9347 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:35:11,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 572 transitions, 10757 flow [2024-06-28 01:35:12,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 572 transitions, 10556 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:12,054 INFO L231 Difference]: Finished difference. Result has 324 places, 544 transitions, 9205 flow [2024-06-28 01:35:12,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9146, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9205, PETRI_PLACES=324, PETRI_TRANSITIONS=544} [2024-06-28 01:35:12,055 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-28 01:35:12,055 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 544 transitions, 9205 flow [2024-06-28 01:35:12,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:12,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:12,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:12,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:35:12,056 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:12,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:12,056 INFO L85 PathProgramCache]: Analyzing trace with hash 553051398, now seen corresponding path program 13 times [2024-06-28 01:35:12,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117652257] [2024-06-28 01:35:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:12,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:12,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:12,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117652257] [2024-06-28 01:35:12,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117652257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:12,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:12,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:12,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718222542] [2024-06-28 01:35:12,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:12,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:12,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:12,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:12,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:12,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:12,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 544 transitions, 9205 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:12,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:12,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:12,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:14,219 INFO L124 PetriNetUnfolderBase]: 3067/6047 cut-off events. [2024-06-28 01:35:14,219 INFO L125 PetriNetUnfolderBase]: For 136444/136444 co-relation queries the response was YES. [2024-06-28 01:35:14,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40746 conditions, 6047 events. 3067/6047 cut-off events. For 136444/136444 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 49591 event pairs, 990 based on Foata normal form. 3/5794 useless extension candidates. Maximal degree in co-relation 40598. Up to 4623 conditions per place. [2024-06-28 01:35:14,286 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 545 selfloop transitions, 43 changer transitions 0/595 dead transitions. [2024-06-28 01:35:14,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 595 transitions, 11095 flow [2024-06-28 01:35:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:14,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:35:14,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-28 01:35:14,287 INFO L175 Difference]: Start difference. First operand has 324 places, 544 transitions, 9205 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:35:14,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 595 transitions, 11095 flow [2024-06-28 01:35:14,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 595 transitions, 11032 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:14,900 INFO L231 Difference]: Finished difference. Result has 327 places, 549 transitions, 9324 flow [2024-06-28 01:35:14,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9142, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9324, PETRI_PLACES=327, PETRI_TRANSITIONS=549} [2024-06-28 01:35:14,900 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-28 01:35:14,900 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 549 transitions, 9324 flow [2024-06-28 01:35:14,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:14,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:14,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:14,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:35:14,901 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:14,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:14,901 INFO L85 PathProgramCache]: Analyzing trace with hash 857335250, now seen corresponding path program 1 times [2024-06-28 01:35:14,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:14,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283117311] [2024-06-28 01:35:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:15,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:15,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283117311] [2024-06-28 01:35:15,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283117311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:15,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:15,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:15,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566535330] [2024-06-28 01:35:15,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:15,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:15,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:15,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:15,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:15,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:15,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 549 transitions, 9324 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:15,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:15,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:15,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:17,074 INFO L124 PetriNetUnfolderBase]: 3069/5958 cut-off events. [2024-06-28 01:35:17,074 INFO L125 PetriNetUnfolderBase]: For 132939/132939 co-relation queries the response was YES. [2024-06-28 01:35:17,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40686 conditions, 5958 events. 3069/5958 cut-off events. For 132939/132939 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 48313 event pairs, 952 based on Foata normal form. 2/5726 useless extension candidates. Maximal degree in co-relation 40537. Up to 4858 conditions per place. [2024-06-28 01:35:17,148 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 553 selfloop transitions, 23 changer transitions 0/583 dead transitions. [2024-06-28 01:35:17,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 583 transitions, 10766 flow [2024-06-28 01:35:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:35:17,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:35:17,149 INFO L175 Difference]: Start difference. First operand has 327 places, 549 transitions, 9324 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:35:17,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 583 transitions, 10766 flow [2024-06-28 01:35:17,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 583 transitions, 10579 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:17,852 INFO L231 Difference]: Finished difference. Result has 329 places, 553 transitions, 9252 flow [2024-06-28 01:35:17,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9137, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9252, PETRI_PLACES=329, PETRI_TRANSITIONS=553} [2024-06-28 01:35:17,852 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-28 01:35:17,852 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 553 transitions, 9252 flow [2024-06-28 01:35:17,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:17,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:17,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:17,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:35:17,853 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:17,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash 553057908, now seen corresponding path program 14 times [2024-06-28 01:35:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:17,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856814341] [2024-06-28 01:35:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:17,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:18,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:18,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856814341] [2024-06-28 01:35:18,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856814341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:18,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:18,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:18,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041112341] [2024-06-28 01:35:18,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:18,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:18,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:18,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:18,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:18,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:18,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 553 transitions, 9252 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:18,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:18,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:18,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:19,919 INFO L124 PetriNetUnfolderBase]: 3123/6160 cut-off events. [2024-06-28 01:35:19,919 INFO L125 PetriNetUnfolderBase]: For 135662/135662 co-relation queries the response was YES. [2024-06-28 01:35:19,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41241 conditions, 6160 events. 3123/6160 cut-off events. For 135662/135662 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 50652 event pairs, 1006 based on Foata normal form. 3/5901 useless extension candidates. Maximal degree in co-relation 41090. Up to 4667 conditions per place. [2024-06-28 01:35:19,990 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 558 selfloop transitions, 45 changer transitions 0/610 dead transitions. [2024-06-28 01:35:19,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 610 transitions, 11254 flow [2024-06-28 01:35:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:35:19,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:35:19,991 INFO L175 Difference]: Start difference. First operand has 329 places, 553 transitions, 9252 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:35:19,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 610 transitions, 11254 flow [2024-06-28 01:35:20,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 610 transitions, 11181 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:20,746 INFO L231 Difference]: Finished difference. Result has 332 places, 558 transitions, 9354 flow [2024-06-28 01:35:20,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9179, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9354, PETRI_PLACES=332, PETRI_TRANSITIONS=558} [2024-06-28 01:35:20,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-28 01:35:20,747 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 558 transitions, 9354 flow [2024-06-28 01:35:20,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:20,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:20,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:20,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:35:20,747 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:20,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:20,747 INFO L85 PathProgramCache]: Analyzing trace with hash 562225848, now seen corresponding path program 15 times [2024-06-28 01:35:20,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:20,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259277721] [2024-06-28 01:35:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:20,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259277721] [2024-06-28 01:35:21,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259277721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:21,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426956113] [2024-06-28 01:35:21,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:21,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:21,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:21,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:21,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:21,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:21,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 558 transitions, 9354 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:21,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:21,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:21,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:22,969 INFO L124 PetriNetUnfolderBase]: 3117/6127 cut-off events. [2024-06-28 01:35:22,970 INFO L125 PetriNetUnfolderBase]: For 131894/131894 co-relation queries the response was YES. [2024-06-28 01:35:23,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41066 conditions, 6127 events. 3117/6127 cut-off events. For 131894/131894 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 50264 event pairs, 1001 based on Foata normal form. 3/5874 useless extension candidates. Maximal degree in co-relation 40914. Up to 4875 conditions per place. [2024-06-28 01:35:23,043 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 559 selfloop transitions, 26 changer transitions 0/592 dead transitions. [2024-06-28 01:35:23,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 592 transitions, 10865 flow [2024-06-28 01:35:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:35:23,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 01:35:23,044 INFO L175 Difference]: Start difference. First operand has 332 places, 558 transitions, 9354 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:35:23,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 592 transitions, 10865 flow [2024-06-28 01:35:23,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 592 transitions, 10731 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:23,804 INFO L231 Difference]: Finished difference. Result has 336 places, 558 transitions, 9282 flow [2024-06-28 01:35:23,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9220, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9282, PETRI_PLACES=336, PETRI_TRANSITIONS=558} [2024-06-28 01:35:23,805 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 295 predicate places. [2024-06-28 01:35:23,805 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 558 transitions, 9282 flow [2024-06-28 01:35:23,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:23,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:23,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:23,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:35:23,806 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:23,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:23,806 INFO L85 PathProgramCache]: Analyzing trace with hash 562563469, now seen corresponding path program 1 times [2024-06-28 01:35:23,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:23,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798430545] [2024-06-28 01:35:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:23,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:24,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:24,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798430545] [2024-06-28 01:35:24,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798430545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:24,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:24,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:24,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054244673] [2024-06-28 01:35:24,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:24,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:24,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:24,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:24,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 558 transitions, 9282 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:24,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:24,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:24,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:26,614 INFO L124 PetriNetUnfolderBase]: 3114/6037 cut-off events. [2024-06-28 01:35:26,614 INFO L125 PetriNetUnfolderBase]: For 125607/125607 co-relation queries the response was YES. [2024-06-28 01:35:26,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40490 conditions, 6037 events. 3114/6037 cut-off events. For 125607/125607 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 49081 event pairs, 964 based on Foata normal form. 2/5803 useless extension candidates. Maximal degree in co-relation 40337. Up to 4934 conditions per place. [2024-06-28 01:35:26,681 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 559 selfloop transitions, 22 changer transitions 0/588 dead transitions. [2024-06-28 01:35:26,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 588 transitions, 10682 flow [2024-06-28 01:35:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:35:26,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-28 01:35:26,683 INFO L175 Difference]: Start difference. First operand has 336 places, 558 transitions, 9282 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:35:26,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 588 transitions, 10682 flow [2024-06-28 01:35:27,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 588 transitions, 10565 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 01:35:27,363 INFO L231 Difference]: Finished difference. Result has 335 places, 558 transitions, 9213 flow [2024-06-28 01:35:27,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9165, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9213, PETRI_PLACES=335, PETRI_TRANSITIONS=558} [2024-06-28 01:35:27,364 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2024-06-28 01:35:27,364 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 558 transitions, 9213 flow [2024-06-28 01:35:27,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:27,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:27,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:27,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:35:27,364 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:27,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:27,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1286166379, now seen corresponding path program 1 times [2024-06-28 01:35:27,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:27,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941252744] [2024-06-28 01:35:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:27,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:27,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:27,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941252744] [2024-06-28 01:35:27,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941252744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:27,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:27,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:35:27,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472688594] [2024-06-28 01:35:27,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:27,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:35:27,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:27,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:35:27,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:35:27,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 01:35:27,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 558 transitions, 9213 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:27,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:27,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 01:35:27,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:28,002 INFO L124 PetriNetUnfolderBase]: 1265/2747 cut-off events. [2024-06-28 01:35:28,002 INFO L125 PetriNetUnfolderBase]: For 57045/57157 co-relation queries the response was YES. [2024-06-28 01:35:28,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17575 conditions, 2747 events. 1265/2747 cut-off events. For 57045/57157 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20941 event pairs, 256 based on Foata normal form. 213/2658 useless extension candidates. Maximal degree in co-relation 17422. Up to 892 conditions per place. [2024-06-28 01:35:28,035 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 136 selfloop transitions, 104 changer transitions 0/452 dead transitions. [2024-06-28 01:35:28,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 452 transitions, 7767 flow [2024-06-28 01:35:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:35:28,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:35:28,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-28 01:35:28,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-06-28 01:35:28,036 INFO L175 Difference]: Start difference. First operand has 335 places, 558 transitions, 9213 flow. Second operand 4 states and 103 transitions. [2024-06-28 01:35:28,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 452 transitions, 7767 flow [2024-06-28 01:35:28,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 452 transitions, 6389 flow, removed 55 selfloop flow, removed 57 redundant places. [2024-06-28 01:35:28,340 INFO L231 Difference]: Finished difference. Result has 282 places, 438 transitions, 6215 flow [2024-06-28 01:35:28,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5751, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6215, PETRI_PLACES=282, PETRI_TRANSITIONS=438} [2024-06-28 01:35:28,341 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 241 predicate places. [2024-06-28 01:35:28,341 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 438 transitions, 6215 flow [2024-06-28 01:35:28,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:28,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:28,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:28,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:35:28,341 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:28,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1456432064, now seen corresponding path program 3 times [2024-06-28 01:35:28,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:28,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509200273] [2024-06-28 01:35:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:28,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:29,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:29,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509200273] [2024-06-28 01:35:29,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509200273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:29,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:29,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:29,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931924830] [2024-06-28 01:35:29,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:29,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:29,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:29,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:29,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:29,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:29,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 438 transitions, 6215 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:29,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:29,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:29,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:30,385 INFO L124 PetriNetUnfolderBase]: 1651/3272 cut-off events. [2024-06-28 01:35:30,385 INFO L125 PetriNetUnfolderBase]: For 74894/74897 co-relation queries the response was YES. [2024-06-28 01:35:30,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20426 conditions, 3272 events. 1651/3272 cut-off events. For 74894/74897 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22807 event pairs, 385 based on Foata normal form. 4/3048 useless extension candidates. Maximal degree in co-relation 20298. Up to 2594 conditions per place. [2024-06-28 01:35:30,417 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 371 selfloop transitions, 115 changer transitions 0/494 dead transitions. [2024-06-28 01:35:30,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 494 transitions, 7759 flow [2024-06-28 01:35:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 01:35:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 01:35:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 245 transitions. [2024-06-28 01:35:30,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41385135135135137 [2024-06-28 01:35:30,419 INFO L175 Difference]: Start difference. First operand has 282 places, 438 transitions, 6215 flow. Second operand 16 states and 245 transitions. [2024-06-28 01:35:30,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 494 transitions, 7759 flow [2024-06-28 01:35:30,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 494 transitions, 7741 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:35:30,813 INFO L231 Difference]: Finished difference. Result has 297 places, 456 transitions, 6749 flow [2024-06-28 01:35:30,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6197, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6749, PETRI_PLACES=297, PETRI_TRANSITIONS=456} [2024-06-28 01:35:30,814 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-28 01:35:30,814 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 456 transitions, 6749 flow [2024-06-28 01:35:30,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:30,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:30,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:30,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:35:30,815 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:30,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:30,815 INFO L85 PathProgramCache]: Analyzing trace with hash -894873959, now seen corresponding path program 1 times [2024-06-28 01:35:30,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:30,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162545257] [2024-06-28 01:35:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:30,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:31,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:31,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162545257] [2024-06-28 01:35:31,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162545257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:31,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:31,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:31,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011062020] [2024-06-28 01:35:31,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:31,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:31,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:31,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:31,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:31,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:31,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 456 transitions, 6749 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:31,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:31,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:31,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:32,550 INFO L124 PetriNetUnfolderBase]: 1697/3367 cut-off events. [2024-06-28 01:35:32,551 INFO L125 PetriNetUnfolderBase]: For 85369/85369 co-relation queries the response was YES. [2024-06-28 01:35:32,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21471 conditions, 3367 events. 1697/3367 cut-off events. For 85369/85369 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 23468 event pairs, 260 based on Foata normal form. 2/3143 useless extension candidates. Maximal degree in co-relation 21338. Up to 1653 conditions per place. [2024-06-28 01:35:32,581 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 389 selfloop transitions, 102 changer transitions 0/499 dead transitions. [2024-06-28 01:35:32,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 499 transitions, 8213 flow [2024-06-28 01:35:32,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:32,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:32,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:35:32,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:35:32,582 INFO L175 Difference]: Start difference. First operand has 297 places, 456 transitions, 6749 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:35:32,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 499 transitions, 8213 flow [2024-06-28 01:35:32,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 499 transitions, 7984 flow, removed 56 selfloop flow, removed 11 redundant places. [2024-06-28 01:35:32,978 INFO L231 Difference]: Finished difference. Result has 298 places, 460 transitions, 6882 flow [2024-06-28 01:35:32,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6552, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6882, PETRI_PLACES=298, PETRI_TRANSITIONS=460} [2024-06-28 01:35:32,979 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-28 01:35:32,979 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 460 transitions, 6882 flow [2024-06-28 01:35:32,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:32,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:32,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:32,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:35:32,980 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:32,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash 57926316, now seen corresponding path program 4 times [2024-06-28 01:35:32,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:32,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687903987] [2024-06-28 01:35:32,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:32,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:33,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:33,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687903987] [2024-06-28 01:35:33,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687903987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:33,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:33,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:33,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67556578] [2024-06-28 01:35:33,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:33,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:33,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:33,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:33,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:33,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:33,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 460 transitions, 6882 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:33,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:33,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:33,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:34,708 INFO L124 PetriNetUnfolderBase]: 1717/3414 cut-off events. [2024-06-28 01:35:34,708 INFO L125 PetriNetUnfolderBase]: For 87882/87882 co-relation queries the response was YES. [2024-06-28 01:35:34,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21970 conditions, 3414 events. 1717/3414 cut-off events. For 87882/87882 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 24066 event pairs, 415 based on Foata normal form. 1/3177 useless extension candidates. Maximal degree in co-relation 21834. Up to 2633 conditions per place. [2024-06-28 01:35:34,742 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 363 selfloop transitions, 132 changer transitions 0/503 dead transitions. [2024-06-28 01:35:34,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 503 transitions, 8516 flow [2024-06-28 01:35:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:35:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:35:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 01:35:34,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-28 01:35:34,743 INFO L175 Difference]: Start difference. First operand has 298 places, 460 transitions, 6882 flow. Second operand 12 states and 189 transitions. [2024-06-28 01:35:34,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 503 transitions, 8516 flow [2024-06-28 01:35:35,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 503 transitions, 8334 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:35,211 INFO L231 Difference]: Finished difference. Result has 306 places, 476 transitions, 7334 flow [2024-06-28 01:35:35,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6714, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7334, PETRI_PLACES=306, PETRI_TRANSITIONS=476} [2024-06-28 01:35:35,211 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-28 01:35:35,211 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 476 transitions, 7334 flow [2024-06-28 01:35:35,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:35,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:35,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:35,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:35:35,212 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:35,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:35,212 INFO L85 PathProgramCache]: Analyzing trace with hash 54052711, now seen corresponding path program 2 times [2024-06-28 01:35:35,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:35,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905713741] [2024-06-28 01:35:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:35,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:35,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:35,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905713741] [2024-06-28 01:35:35,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905713741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:35,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:35,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:35,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485351054] [2024-06-28 01:35:35,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:35,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:35,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:35,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:35,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:35,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:35,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 476 transitions, 7334 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:35,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:35,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:35,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:36,862 INFO L124 PetriNetUnfolderBase]: 1784/3530 cut-off events. [2024-06-28 01:35:36,862 INFO L125 PetriNetUnfolderBase]: For 96414/96414 co-relation queries the response was YES. [2024-06-28 01:35:36,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22867 conditions, 3530 events. 1784/3530 cut-off events. For 96414/96414 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 25002 event pairs, 399 based on Foata normal form. 2/3294 useless extension candidates. Maximal degree in co-relation 22727. Up to 2290 conditions per place. [2024-06-28 01:35:36,896 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 398 selfloop transitions, 113 changer transitions 0/519 dead transitions. [2024-06-28 01:35:36,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 519 transitions, 8757 flow [2024-06-28 01:35:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:35:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:35:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-28 01:35:36,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:35:36,897 INFO L175 Difference]: Start difference. First operand has 306 places, 476 transitions, 7334 flow. Second operand 12 states and 198 transitions. [2024-06-28 01:35:36,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 519 transitions, 8757 flow [2024-06-28 01:35:37,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 519 transitions, 8618 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:37,451 INFO L231 Difference]: Finished difference. Result has 313 places, 481 transitions, 7479 flow [2024-06-28 01:35:37,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7203, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7479, PETRI_PLACES=313, PETRI_TRANSITIONS=481} [2024-06-28 01:35:37,452 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-28 01:35:37,452 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 481 transitions, 7479 flow [2024-06-28 01:35:37,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:37,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:37,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:37,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:35:37,453 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:37,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:37,454 INFO L85 PathProgramCache]: Analyzing trace with hash 24646111, now seen corresponding path program 3 times [2024-06-28 01:35:37,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:37,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068545207] [2024-06-28 01:35:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:37,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:38,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:38,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068545207] [2024-06-28 01:35:38,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068545207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:38,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:38,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:38,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700910314] [2024-06-28 01:35:38,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:38,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:38,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:38,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:38,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:38,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:38,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 481 transitions, 7479 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:38,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:38,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:38,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:39,146 INFO L124 PetriNetUnfolderBase]: 1822/3660 cut-off events. [2024-06-28 01:35:39,146 INFO L125 PetriNetUnfolderBase]: For 98289/98289 co-relation queries the response was YES. [2024-06-28 01:35:39,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23465 conditions, 3660 events. 1822/3660 cut-off events. For 98289/98289 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 26515 event pairs, 462 based on Foata normal form. 2/3409 useless extension candidates. Maximal degree in co-relation 23323. Up to 2653 conditions per place. [2024-06-28 01:35:39,185 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 396 selfloop transitions, 111 changer transitions 0/515 dead transitions. [2024-06-28 01:35:39,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 515 transitions, 8850 flow [2024-06-28 01:35:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:35:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:35:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-28 01:35:39,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346846846846847 [2024-06-28 01:35:39,187 INFO L175 Difference]: Start difference. First operand has 313 places, 481 transitions, 7479 flow. Second operand 12 states and 193 transitions. [2024-06-28 01:35:39,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 515 transitions, 8850 flow [2024-06-28 01:35:39,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 515 transitions, 8683 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:35:39,759 INFO L231 Difference]: Finished difference. Result has 316 places, 484 transitions, 7578 flow [2024-06-28 01:35:39,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7312, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7578, PETRI_PLACES=316, PETRI_TRANSITIONS=484} [2024-06-28 01:35:39,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-28 01:35:39,760 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 484 transitions, 7578 flow [2024-06-28 01:35:39,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:39,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:39,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:39,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:35:39,760 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:39,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:39,760 INFO L85 PathProgramCache]: Analyzing trace with hash -732891601, now seen corresponding path program 4 times [2024-06-28 01:35:39,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:39,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511239463] [2024-06-28 01:35:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:39,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:40,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:40,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511239463] [2024-06-28 01:35:40,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511239463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:40,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:40,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:40,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053118760] [2024-06-28 01:35:40,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:40,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:40,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:40,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:40,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:40,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:40,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 484 transitions, 7578 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:40,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:40,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:40,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:41,520 INFO L124 PetriNetUnfolderBase]: 1819/3661 cut-off events. [2024-06-28 01:35:41,520 INFO L125 PetriNetUnfolderBase]: For 96066/96066 co-relation queries the response was YES. [2024-06-28 01:35:41,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23566 conditions, 3661 events. 1819/3661 cut-off events. For 96066/96066 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 26583 event pairs, 488 based on Foata normal form. 2/3408 useless extension candidates. Maximal degree in co-relation 23422. Up to 2842 conditions per place. [2024-06-28 01:35:41,560 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 386 selfloop transitions, 115 changer transitions 0/509 dead transitions. [2024-06-28 01:35:41,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 509 transitions, 8747 flow [2024-06-28 01:35:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:35:41,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:35:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-28 01:35:41,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-28 01:35:41,561 INFO L175 Difference]: Start difference. First operand has 316 places, 484 transitions, 7578 flow. Second operand 12 states and 188 transitions. [2024-06-28 01:35:41,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 509 transitions, 8747 flow [2024-06-28 01:35:42,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 509 transitions, 8595 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:42,203 INFO L231 Difference]: Finished difference. Result has 320 places, 484 transitions, 7666 flow [2024-06-28 01:35:42,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7426, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7666, PETRI_PLACES=320, PETRI_TRANSITIONS=484} [2024-06-28 01:35:42,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-28 01:35:42,204 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 484 transitions, 7666 flow [2024-06-28 01:35:42,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:42,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:42,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:42,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:35:42,205 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:42,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:42,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1456276519, now seen corresponding path program 5 times [2024-06-28 01:35:42,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:42,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714629982] [2024-06-28 01:35:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:42,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:43,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:43,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714629982] [2024-06-28 01:35:43,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714629982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:43,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:43,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:43,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607329556] [2024-06-28 01:35:43,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:43,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:43,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:43,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:43,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:43,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:43,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 484 transitions, 7666 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:43,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:43,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:43,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:44,139 INFO L124 PetriNetUnfolderBase]: 1930/3895 cut-off events. [2024-06-28 01:35:44,139 INFO L125 PetriNetUnfolderBase]: For 102964/102967 co-relation queries the response was YES. [2024-06-28 01:35:44,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24830 conditions, 3895 events. 1930/3895 cut-off events. For 102964/102967 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 28815 event pairs, 470 based on Foata normal form. 5/3634 useless extension candidates. Maximal degree in co-relation 24684. Up to 2696 conditions per place. [2024-06-28 01:35:44,181 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 444 selfloop transitions, 80 changer transitions 0/532 dead transitions. [2024-06-28 01:35:44,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 532 transitions, 9170 flow [2024-06-28 01:35:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:35:44,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:35:44,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-28 01:35:44,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:35:44,182 INFO L175 Difference]: Start difference. First operand has 320 places, 484 transitions, 7666 flow. Second operand 12 states and 196 transitions. [2024-06-28 01:35:44,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 532 transitions, 9170 flow [2024-06-28 01:35:44,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 532 transitions, 8887 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 01:35:44,848 INFO L231 Difference]: Finished difference. Result has 321 places, 493 transitions, 7685 flow [2024-06-28 01:35:44,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7391, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7685, PETRI_PLACES=321, PETRI_TRANSITIONS=493} [2024-06-28 01:35:44,849 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-28 01:35:44,849 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 493 transitions, 7685 flow [2024-06-28 01:35:44,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:44,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:44,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:44,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:35:44,850 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:44,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:44,850 INFO L85 PathProgramCache]: Analyzing trace with hash 552763721, now seen corresponding path program 6 times [2024-06-28 01:35:44,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:44,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316874043] [2024-06-28 01:35:44,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:44,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:45,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:45,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316874043] [2024-06-28 01:35:45,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316874043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:45,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:45,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:45,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045517658] [2024-06-28 01:35:45,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:45,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:45,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:45,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:45,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:45,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:45,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 493 transitions, 7685 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:45,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:45,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:45,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:47,052 INFO L124 PetriNetUnfolderBase]: 1968/3987 cut-off events. [2024-06-28 01:35:47,052 INFO L125 PetriNetUnfolderBase]: For 105492/105495 co-relation queries the response was YES. [2024-06-28 01:35:47,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25453 conditions, 3987 events. 1968/3987 cut-off events. For 105492/105495 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 29786 event pairs, 586 based on Foata normal form. 5/3711 useless extension candidates. Maximal degree in co-relation 25305. Up to 3206 conditions per place. [2024-06-28 01:35:47,095 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 429 selfloop transitions, 86 changer transitions 0/523 dead transitions. [2024-06-28 01:35:47,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 523 transitions, 8905 flow [2024-06-28 01:35:47,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:35:47,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:35:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 196 transitions. [2024-06-28 01:35:47,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074844074844075 [2024-06-28 01:35:47,096 INFO L175 Difference]: Start difference. First operand has 321 places, 493 transitions, 7685 flow. Second operand 13 states and 196 transitions. [2024-06-28 01:35:47,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 523 transitions, 8905 flow [2024-06-28 01:35:47,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 523 transitions, 8805 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:47,746 INFO L231 Difference]: Finished difference. Result has 326 places, 496 transitions, 7812 flow [2024-06-28 01:35:47,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7585, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7812, PETRI_PLACES=326, PETRI_TRANSITIONS=496} [2024-06-28 01:35:47,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-28 01:35:47,747 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 496 transitions, 7812 flow [2024-06-28 01:35:47,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:47,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:47,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:47,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:35:47,747 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:47,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:47,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1245994851, now seen corresponding path program 7 times [2024-06-28 01:35:47,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:47,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109635055] [2024-06-28 01:35:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:47,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:48,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:48,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109635055] [2024-06-28 01:35:48,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109635055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:48,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:48,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:48,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332872047] [2024-06-28 01:35:48,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:48,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:48,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:48,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:48,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:48,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:48,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 496 transitions, 7812 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:48,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:48,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:48,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:49,758 INFO L124 PetriNetUnfolderBase]: 1965/3984 cut-off events. [2024-06-28 01:35:49,758 INFO L125 PetriNetUnfolderBase]: For 102428/102431 co-relation queries the response was YES. [2024-06-28 01:35:49,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25476 conditions, 3984 events. 1965/3984 cut-off events. For 102428/102431 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 29754 event pairs, 540 based on Foata normal form. 5/3720 useless extension candidates. Maximal degree in co-relation 25326. Up to 2946 conditions per place. [2024-06-28 01:35:49,801 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 436 selfloop transitions, 84 changer transitions 0/528 dead transitions. [2024-06-28 01:35:49,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 528 transitions, 9043 flow [2024-06-28 01:35:49,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:35:49,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:35:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 01:35:49,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-28 01:35:49,802 INFO L175 Difference]: Start difference. First operand has 326 places, 496 transitions, 7812 flow. Second operand 12 states and 189 transitions. [2024-06-28 01:35:49,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 528 transitions, 9043 flow [2024-06-28 01:35:50,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 528 transitions, 8900 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:50,456 INFO L231 Difference]: Finished difference. Result has 330 places, 496 transitions, 7851 flow [2024-06-28 01:35:50,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7669, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7851, PETRI_PLACES=330, PETRI_TRANSITIONS=496} [2024-06-28 01:35:50,456 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 289 predicate places. [2024-06-28 01:35:50,457 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 496 transitions, 7851 flow [2024-06-28 01:35:50,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:50,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:50,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:50,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:35:50,457 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:50,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:50,458 INFO L85 PathProgramCache]: Analyzing trace with hash 611749355, now seen corresponding path program 8 times [2024-06-28 01:35:50,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:50,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410773316] [2024-06-28 01:35:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:50,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:51,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:51,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410773316] [2024-06-28 01:35:51,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410773316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:51,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:51,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:51,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997310432] [2024-06-28 01:35:51,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:51,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:51,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:51,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 496 transitions, 7851 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:51,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:51,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:51,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:52,658 INFO L124 PetriNetUnfolderBase]: 1982/4023 cut-off events. [2024-06-28 01:35:52,659 INFO L125 PetriNetUnfolderBase]: For 106257/106260 co-relation queries the response was YES. [2024-06-28 01:35:52,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25805 conditions, 4023 events. 1982/4023 cut-off events. For 106257/106260 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 30131 event pairs, 604 based on Foata normal form. 5/3743 useless extension candidates. Maximal degree in co-relation 25654. Up to 3168 conditions per place. [2024-06-28 01:35:52,705 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 405 selfloop transitions, 110 changer transitions 0/523 dead transitions. [2024-06-28 01:35:52,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 523 transitions, 9111 flow [2024-06-28 01:35:52,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:35:52,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:35:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-28 01:35:52,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-28 01:35:52,706 INFO L175 Difference]: Start difference. First operand has 330 places, 496 transitions, 7851 flow. Second operand 12 states and 191 transitions. [2024-06-28 01:35:52,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 523 transitions, 9111 flow [2024-06-28 01:35:53,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 523 transitions, 8918 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 01:35:53,451 INFO L231 Difference]: Finished difference. Result has 331 places, 497 transitions, 7902 flow [2024-06-28 01:35:53,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7658, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7902, PETRI_PLACES=331, PETRI_TRANSITIONS=497} [2024-06-28 01:35:53,452 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-28 01:35:53,452 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 497 transitions, 7902 flow [2024-06-28 01:35:53,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:53,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:53,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:53,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:35:53,453 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:53,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:53,453 INFO L85 PathProgramCache]: Analyzing trace with hash 611749510, now seen corresponding path program 5 times [2024-06-28 01:35:53,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:53,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974414209] [2024-06-28 01:35:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:53,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:54,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:54,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974414209] [2024-06-28 01:35:54,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974414209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:54,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:54,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:54,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389852560] [2024-06-28 01:35:54,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:54,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:54,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:54,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:54,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:54,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 497 transitions, 7902 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:54,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:54,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:54,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:55,621 INFO L124 PetriNetUnfolderBase]: 2026/4087 cut-off events. [2024-06-28 01:35:55,621 INFO L125 PetriNetUnfolderBase]: For 120911/120914 co-relation queries the response was YES. [2024-06-28 01:35:55,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26709 conditions, 4087 events. 2026/4087 cut-off events. For 120911/120914 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 30577 event pairs, 589 based on Foata normal form. 6/3799 useless extension candidates. Maximal degree in co-relation 26557. Up to 2944 conditions per place. [2024-06-28 01:35:55,668 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 376 selfloop transitions, 157 changer transitions 0/541 dead transitions. [2024-06-28 01:35:55,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 541 transitions, 9591 flow [2024-06-28 01:35:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:35:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:35:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 220 transitions. [2024-06-28 01:35:55,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573804573804574 [2024-06-28 01:35:55,669 INFO L175 Difference]: Start difference. First operand has 331 places, 497 transitions, 7902 flow. Second operand 13 states and 220 transitions. [2024-06-28 01:35:55,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 541 transitions, 9591 flow [2024-06-28 01:35:56,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 541 transitions, 9357 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 01:35:56,475 INFO L231 Difference]: Finished difference. Result has 335 places, 503 transitions, 8152 flow [2024-06-28 01:35:56,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7668, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8152, PETRI_PLACES=335, PETRI_TRANSITIONS=503} [2024-06-28 01:35:56,475 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2024-06-28 01:35:56,476 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 503 transitions, 8152 flow [2024-06-28 01:35:56,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:56,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:56,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:56,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:35:56,476 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:56,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:56,476 INFO L85 PathProgramCache]: Analyzing trace with hash 611745635, now seen corresponding path program 9 times [2024-06-28 01:35:56,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:56,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397522404] [2024-06-28 01:35:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:56,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:57,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:57,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397522404] [2024-06-28 01:35:57,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397522404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:57,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:57,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:57,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076087565] [2024-06-28 01:35:57,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:57,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:57,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:57,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:57,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:57,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:35:57,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 503 transitions, 8152 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:57,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:57,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:35:57,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:58,647 INFO L124 PetriNetUnfolderBase]: 2063/4169 cut-off events. [2024-06-28 01:35:58,647 INFO L125 PetriNetUnfolderBase]: For 128432/128435 co-relation queries the response was YES. [2024-06-28 01:35:58,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27672 conditions, 4169 events. 2063/4169 cut-off events. For 128432/128435 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 31370 event pairs, 615 based on Foata normal form. 5/3878 useless extension candidates. Maximal degree in co-relation 27518. Up to 3224 conditions per place. [2024-06-28 01:35:58,696 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 416 selfloop transitions, 110 changer transitions 0/534 dead transitions. [2024-06-28 01:35:58,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 534 transitions, 9604 flow [2024-06-28 01:35:58,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:58,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:35:58,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:35:58,697 INFO L175 Difference]: Start difference. First operand has 335 places, 503 transitions, 8152 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:35:58,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 534 transitions, 9604 flow [2024-06-28 01:35:59,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 534 transitions, 9347 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 01:35:59,603 INFO L231 Difference]: Finished difference. Result has 337 places, 505 transitions, 8161 flow [2024-06-28 01:35:59,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7895, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8161, PETRI_PLACES=337, PETRI_TRANSITIONS=505} [2024-06-28 01:35:59,604 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-28 01:35:59,604 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 505 transitions, 8161 flow [2024-06-28 01:35:59,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:59,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:59,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:59,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:35:59,604 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:59,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:59,605 INFO L85 PathProgramCache]: Analyzing trace with hash 617463430, now seen corresponding path program 6 times [2024-06-28 01:35:59,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:59,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707637467] [2024-06-28 01:35:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:59,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:00,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:00,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707637467] [2024-06-28 01:36:00,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707637467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:00,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:00,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:00,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107043974] [2024-06-28 01:36:00,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:00,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:00,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:00,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:00,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:00,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:00,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 505 transitions, 8161 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:00,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:00,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:00,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:01,866 INFO L124 PetriNetUnfolderBase]: 2082/4199 cut-off events. [2024-06-28 01:36:01,866 INFO L125 PetriNetUnfolderBase]: For 132982/132985 co-relation queries the response was YES. [2024-06-28 01:36:01,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27963 conditions, 4199 events. 2082/4199 cut-off events. For 132982/132985 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 31545 event pairs, 607 based on Foata normal form. 6/3902 useless extension candidates. Maximal degree in co-relation 27807. Up to 3103 conditions per place. [2024-06-28 01:36:01,916 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 367 selfloop transitions, 163 changer transitions 0/538 dead transitions. [2024-06-28 01:36:01,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 538 transitions, 9561 flow [2024-06-28 01:36:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:01,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:36:01,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:36:01,917 INFO L175 Difference]: Start difference. First operand has 337 places, 505 transitions, 8161 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:36:01,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 538 transitions, 9561 flow [2024-06-28 01:36:02,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 538 transitions, 9395 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:02,750 INFO L231 Difference]: Finished difference. Result has 341 places, 508 transitions, 8395 flow [2024-06-28 01:36:02,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7995, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8395, PETRI_PLACES=341, PETRI_TRANSITIONS=508} [2024-06-28 01:36:02,751 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-28 01:36:02,751 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 508 transitions, 8395 flow [2024-06-28 01:36:02,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:02,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:02,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:02,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:36:02,752 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:02,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash 617256040, now seen corresponding path program 7 times [2024-06-28 01:36:02,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:02,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456283901] [2024-06-28 01:36:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:02,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:03,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:03,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456283901] [2024-06-28 01:36:03,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456283901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:03,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:03,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:03,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852069528] [2024-06-28 01:36:03,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:03,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:03,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:03,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:03,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:03,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 508 transitions, 8395 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:03,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:03,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:03,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:05,125 INFO L124 PetriNetUnfolderBase]: 2076/4190 cut-off events. [2024-06-28 01:36:05,125 INFO L125 PetriNetUnfolderBase]: For 126660/126663 co-relation queries the response was YES. [2024-06-28 01:36:05,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27916 conditions, 4190 events. 2076/4190 cut-off events. For 126660/126663 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 31499 event pairs, 606 based on Foata normal form. 6/3893 useless extension candidates. Maximal degree in co-relation 27758. Up to 3064 conditions per place. [2024-06-28 01:36:05,166 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 375 selfloop transitions, 160 changer transitions 0/543 dead transitions. [2024-06-28 01:36:05,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 543 transitions, 9792 flow [2024-06-28 01:36:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:36:05,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:36:05,167 INFO L175 Difference]: Start difference. First operand has 341 places, 508 transitions, 8395 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:36:05,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 543 transitions, 9792 flow [2024-06-28 01:36:05,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 543 transitions, 9409 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 01:36:05,940 INFO L231 Difference]: Finished difference. Result has 344 places, 508 transitions, 8340 flow [2024-06-28 01:36:05,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8012, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8340, PETRI_PLACES=344, PETRI_TRANSITIONS=508} [2024-06-28 01:36:05,941 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-28 01:36:05,941 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 508 transitions, 8340 flow [2024-06-28 01:36:05,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:05,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:05,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:05,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:36:05,942 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:05,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:05,942 INFO L85 PathProgramCache]: Analyzing trace with hash 829411503, now seen corresponding path program 10 times [2024-06-28 01:36:05,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:05,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302124020] [2024-06-28 01:36:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:05,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:06,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:06,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302124020] [2024-06-28 01:36:06,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302124020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:06,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:06,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:06,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297750900] [2024-06-28 01:36:06,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:06,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:06,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:06,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:06,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:06,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:06,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 508 transitions, 8340 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:06,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:06,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:06,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:08,141 INFO L124 PetriNetUnfolderBase]: 2073/4185 cut-off events. [2024-06-28 01:36:08,142 INFO L125 PetriNetUnfolderBase]: For 118461/118464 co-relation queries the response was YES. [2024-06-28 01:36:08,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27574 conditions, 4185 events. 2073/4185 cut-off events. For 118461/118464 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 31433 event pairs, 629 based on Foata normal form. 5/3888 useless extension candidates. Maximal degree in co-relation 27415. Up to 3329 conditions per place. [2024-06-28 01:36:08,192 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 412 selfloop transitions, 112 changer transitions 0/532 dead transitions. [2024-06-28 01:36:08,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 532 transitions, 9578 flow [2024-06-28 01:36:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:36:08,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:36:08,193 INFO L175 Difference]: Start difference. First operand has 344 places, 508 transitions, 8340 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:36:08,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 532 transitions, 9578 flow [2024-06-28 01:36:09,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 532 transitions, 9229 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 01:36:09,017 INFO L231 Difference]: Finished difference. Result has 344 places, 508 transitions, 8219 flow [2024-06-28 01:36:09,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7991, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8219, PETRI_PLACES=344, PETRI_TRANSITIONS=508} [2024-06-28 01:36:09,018 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-28 01:36:09,018 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 508 transitions, 8219 flow [2024-06-28 01:36:09,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:09,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:09,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:09,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:36:09,019 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:09,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1247393827, now seen corresponding path program 11 times [2024-06-28 01:36:09,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:09,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813809168] [2024-06-28 01:36:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:09,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:09,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:09,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813809168] [2024-06-28 01:36:09,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813809168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:09,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:09,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:09,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830646299] [2024-06-28 01:36:09,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:09,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:09,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:09,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:09,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:09,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:09,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 508 transitions, 8219 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:09,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:09,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:09,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:11,141 INFO L124 PetriNetUnfolderBase]: 2100/4184 cut-off events. [2024-06-28 01:36:11,141 INFO L125 PetriNetUnfolderBase]: For 119517/119520 co-relation queries the response was YES. [2024-06-28 01:36:11,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27474 conditions, 4184 events. 2100/4184 cut-off events. For 119517/119520 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 30861 event pairs, 380 based on Foata normal form. 5/3913 useless extension candidates. Maximal degree in co-relation 27314. Up to 2090 conditions per place. [2024-06-28 01:36:11,188 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 395 selfloop transitions, 146 changer transitions 0/549 dead transitions. [2024-06-28 01:36:11,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 549 transitions, 9760 flow [2024-06-28 01:36:11,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:36:11,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-28 01:36:11,189 INFO L175 Difference]: Start difference. First operand has 344 places, 508 transitions, 8219 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:36:11,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 549 transitions, 9760 flow [2024-06-28 01:36:11,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 549 transitions, 9530 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:36:11,973 INFO L231 Difference]: Finished difference. Result has 345 places, 510 transitions, 8326 flow [2024-06-28 01:36:11,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7989, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8326, PETRI_PLACES=345, PETRI_TRANSITIONS=510} [2024-06-28 01:36:11,973 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-28 01:36:11,973 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 510 transitions, 8326 flow [2024-06-28 01:36:11,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:11,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:11,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:11,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:36:11,974 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:11,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1249267777, now seen corresponding path program 12 times [2024-06-28 01:36:11,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:11,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833374747] [2024-06-28 01:36:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:11,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:12,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:12,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833374747] [2024-06-28 01:36:12,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833374747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:12,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:12,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:12,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483294533] [2024-06-28 01:36:12,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:12,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:12,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:12,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:12,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:12,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 510 transitions, 8326 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:12,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:12,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:12,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:14,131 INFO L124 PetriNetUnfolderBase]: 2359/4876 cut-off events. [2024-06-28 01:36:14,131 INFO L125 PetriNetUnfolderBase]: For 133442/133445 co-relation queries the response was YES. [2024-06-28 01:36:14,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31388 conditions, 4876 events. 2359/4876 cut-off events. For 133442/133445 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 38650 event pairs, 653 based on Foata normal form. 5/4526 useless extension candidates. Maximal degree in co-relation 31227. Up to 3341 conditions per place. [2024-06-28 01:36:14,189 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 416 selfloop transitions, 156 changer transitions 0/580 dead transitions. [2024-06-28 01:36:14,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 580 transitions, 10462 flow [2024-06-28 01:36:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:36:14,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:36:14,190 INFO L175 Difference]: Start difference. First operand has 345 places, 510 transitions, 8326 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:36:14,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 580 transitions, 10462 flow [2024-06-28 01:36:15,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 580 transitions, 10280 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:36:15,129 INFO L231 Difference]: Finished difference. Result has 349 places, 544 transitions, 9122 flow [2024-06-28 01:36:15,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8176, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9122, PETRI_PLACES=349, PETRI_TRANSITIONS=544} [2024-06-28 01:36:15,130 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-28 01:36:15,130 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 544 transitions, 9122 flow [2024-06-28 01:36:15,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:15,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:15,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:15,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:36:15,130 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:15,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:15,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1249271652, now seen corresponding path program 8 times [2024-06-28 01:36:15,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:15,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176214549] [2024-06-28 01:36:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:15,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:16,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:16,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176214549] [2024-06-28 01:36:16,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176214549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:16,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:16,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:16,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028747056] [2024-06-28 01:36:16,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:16,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:16,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:16,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:16,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:16,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:16,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 544 transitions, 9122 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:16,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:16,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:16,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:17,286 INFO L124 PetriNetUnfolderBase]: 2383/4867 cut-off events. [2024-06-28 01:36:17,286 INFO L125 PetriNetUnfolderBase]: For 129811/129814 co-relation queries the response was YES. [2024-06-28 01:36:17,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31954 conditions, 4867 events. 2383/4867 cut-off events. For 129811/129814 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 38296 event pairs, 754 based on Foata normal form. 4/4510 useless extension candidates. Maximal degree in co-relation 31792. Up to 3792 conditions per place. [2024-06-28 01:36:17,342 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 411 selfloop transitions, 172 changer transitions 0/591 dead transitions. [2024-06-28 01:36:17,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 591 transitions, 10988 flow [2024-06-28 01:36:17,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:17,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:17,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:36:17,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-28 01:36:17,343 INFO L175 Difference]: Start difference. First operand has 349 places, 544 transitions, 9122 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:36:17,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 591 transitions, 10988 flow [2024-06-28 01:36:18,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 591 transitions, 10741 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:18,227 INFO L231 Difference]: Finished difference. Result has 354 places, 563 transitions, 9585 flow [2024-06-28 01:36:18,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8875, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9585, PETRI_PLACES=354, PETRI_TRANSITIONS=563} [2024-06-28 01:36:18,228 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-28 01:36:18,228 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 563 transitions, 9585 flow [2024-06-28 01:36:18,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:18,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:18,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:18,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:36:18,229 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:18,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:18,236 INFO L85 PathProgramCache]: Analyzing trace with hash -223739867, now seen corresponding path program 13 times [2024-06-28 01:36:18,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:18,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864826653] [2024-06-28 01:36:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:18,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:19,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:19,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864826653] [2024-06-28 01:36:19,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864826653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:19,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:19,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:19,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289760294] [2024-06-28 01:36:19,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:19,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:19,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:19,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:19,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:19,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:19,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 563 transitions, 9585 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:19,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:19,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:19,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:20,650 INFO L124 PetriNetUnfolderBase]: 2418/4942 cut-off events. [2024-06-28 01:36:20,650 INFO L125 PetriNetUnfolderBase]: For 134907/134910 co-relation queries the response was YES. [2024-06-28 01:36:20,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32394 conditions, 4942 events. 2418/4942 cut-off events. For 134907/134910 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 39052 event pairs, 790 based on Foata normal form. 7/4596 useless extension candidates. Maximal degree in co-relation 32230. Up to 3659 conditions per place. [2024-06-28 01:36:20,710 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 412 selfloop transitions, 176 changer transitions 0/596 dead transitions. [2024-06-28 01:36:20,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 596 transitions, 11035 flow [2024-06-28 01:36:20,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:20,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 01:36:20,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-06-28 01:36:20,712 INFO L175 Difference]: Start difference. First operand has 354 places, 563 transitions, 9585 flow. Second operand 12 states and 184 transitions. [2024-06-28 01:36:20,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 596 transitions, 11035 flow [2024-06-28 01:36:21,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 596 transitions, 10773 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:21,710 INFO L231 Difference]: Finished difference. Result has 359 places, 566 transitions, 9765 flow [2024-06-28 01:36:21,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9323, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9765, PETRI_PLACES=359, PETRI_TRANSITIONS=566} [2024-06-28 01:36:21,710 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-28 01:36:21,710 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 566 transitions, 9765 flow [2024-06-28 01:36:21,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:21,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:21,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:21,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:36:21,711 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:21,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:21,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1336113192, now seen corresponding path program 9 times [2024-06-28 01:36:21,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:21,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449832536] [2024-06-28 01:36:21,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:21,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:22,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:22,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449832536] [2024-06-28 01:36:22,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449832536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:22,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:22,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:22,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777617951] [2024-06-28 01:36:22,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:22,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:22,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:22,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:22,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:22,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:22,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 566 transitions, 9765 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:22,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:22,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:22,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:23,977 INFO L124 PetriNetUnfolderBase]: 2451/4995 cut-off events. [2024-06-28 01:36:23,977 INFO L125 PetriNetUnfolderBase]: For 137529/137529 co-relation queries the response was YES. [2024-06-28 01:36:24,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33249 conditions, 4995 events. 2451/4995 cut-off events. For 137529/137529 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 39413 event pairs, 793 based on Foata normal form. 3/4626 useless extension candidates. Maximal degree in co-relation 33084. Up to 3999 conditions per place. [2024-06-28 01:36:24,040 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 486 selfloop transitions, 109 changer transitions 0/603 dead transitions. [2024-06-28 01:36:24,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 603 transitions, 11391 flow [2024-06-28 01:36:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:24,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:36:24,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-28 01:36:24,043 INFO L175 Difference]: Start difference. First operand has 359 places, 566 transitions, 9765 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:36:24,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 603 transitions, 11391 flow [2024-06-28 01:36:24,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 603 transitions, 11031 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 01:36:24,980 INFO L231 Difference]: Finished difference. Result has 357 places, 580 transitions, 9939 flow [2024-06-28 01:36:24,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9405, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9939, PETRI_PLACES=357, PETRI_TRANSITIONS=580} [2024-06-28 01:36:24,981 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-28 01:36:24,981 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 580 transitions, 9939 flow [2024-06-28 01:36:24,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:24,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:24,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:24,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:36:24,982 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:24,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:24,983 INFO L85 PathProgramCache]: Analyzing trace with hash -136903752, now seen corresponding path program 10 times [2024-06-28 01:36:24,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:24,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385706063] [2024-06-28 01:36:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:24,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:25,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:25,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385706063] [2024-06-28 01:36:25,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385706063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:25,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:25,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:25,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741805968] [2024-06-28 01:36:25,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:25,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:25,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:26,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:26,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 580 transitions, 9939 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:26,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:26,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:26,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:27,459 INFO L124 PetriNetUnfolderBase]: 2511/5086 cut-off events. [2024-06-28 01:36:27,459 INFO L125 PetriNetUnfolderBase]: For 130879/130879 co-relation queries the response was YES. [2024-06-28 01:36:27,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34030 conditions, 5086 events. 2511/5086 cut-off events. For 130879/130879 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 40090 event pairs, 795 based on Foata normal form. 1/4700 useless extension candidates. Maximal degree in co-relation 33866. Up to 4047 conditions per place. [2024-06-28 01:36:27,514 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 489 selfloop transitions, 143 changer transitions 0/640 dead transitions. [2024-06-28 01:36:27,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 640 transitions, 12123 flow [2024-06-28 01:36:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:36:27,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-28 01:36:27,516 INFO L175 Difference]: Start difference. First operand has 357 places, 580 transitions, 9939 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:36:27,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 640 transitions, 12123 flow [2024-06-28 01:36:28,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 640 transitions, 11891 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 01:36:28,442 INFO L231 Difference]: Finished difference. Result has 361 places, 614 transitions, 10844 flow [2024-06-28 01:36:28,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9707, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10844, PETRI_PLACES=361, PETRI_TRANSITIONS=614} [2024-06-28 01:36:28,442 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-28 01:36:28,443 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 614 transitions, 10844 flow [2024-06-28 01:36:28,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:28,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:28,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:28,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:36:28,443 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:28,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:28,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1335959587, now seen corresponding path program 14 times [2024-06-28 01:36:28,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:28,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002288043] [2024-06-28 01:36:28,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:28,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:29,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:29,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002288043] [2024-06-28 01:36:29,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002288043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:29,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:29,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:29,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676539597] [2024-06-28 01:36:29,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:29,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:29,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:29,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:29,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:29,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:29,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 614 transitions, 10844 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:29,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:29,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:29,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:30,794 INFO L124 PetriNetUnfolderBase]: 2508/5089 cut-off events. [2024-06-28 01:36:30,794 INFO L125 PetriNetUnfolderBase]: For 130193/130193 co-relation queries the response was YES. [2024-06-28 01:36:30,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34114 conditions, 5089 events. 2508/5089 cut-off events. For 130193/130193 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 40144 event pairs, 706 based on Foata normal form. 2/4729 useless extension candidates. Maximal degree in co-relation 33948. Up to 3638 conditions per place. [2024-06-28 01:36:30,856 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 515 selfloop transitions, 122 changer transitions 0/645 dead transitions. [2024-06-28 01:36:30,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 645 transitions, 12350 flow [2024-06-28 01:36:30,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:36:30,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 01:36:30,857 INFO L175 Difference]: Start difference. First operand has 361 places, 614 transitions, 10844 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:36:30,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 645 transitions, 12350 flow [2024-06-28 01:36:31,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 645 transitions, 12130 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:36:31,866 INFO L231 Difference]: Finished difference. Result has 363 places, 614 transitions, 10888 flow [2024-06-28 01:36:31,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10624, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10888, PETRI_PLACES=363, PETRI_TRANSITIONS=614} [2024-06-28 01:36:31,866 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 322 predicate places. [2024-06-28 01:36:31,866 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 614 transitions, 10888 flow [2024-06-28 01:36:31,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:31,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:31,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:31,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:36:31,867 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:31,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:31,867 INFO L85 PathProgramCache]: Analyzing trace with hash -137047902, now seen corresponding path program 11 times [2024-06-28 01:36:31,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:31,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214626656] [2024-06-28 01:36:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:31,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:32,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:32,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214626656] [2024-06-28 01:36:32,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214626656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:32,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:32,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:32,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457812036] [2024-06-28 01:36:32,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:32,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:32,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:32,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:32,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:32,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:32,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 614 transitions, 10888 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:32,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:32,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:32,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:34,223 INFO L124 PetriNetUnfolderBase]: 2506/5077 cut-off events. [2024-06-28 01:36:34,224 INFO L125 PetriNetUnfolderBase]: For 126772/126772 co-relation queries the response was YES. [2024-06-28 01:36:34,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34251 conditions, 5077 events. 2506/5077 cut-off events. For 126772/126772 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 39968 event pairs, 788 based on Foata normal form. 1/4690 useless extension candidates. Maximal degree in co-relation 34084. Up to 3975 conditions per place. [2024-06-28 01:36:34,283 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 438 selfloop transitions, 197 changer transitions 0/643 dead transitions. [2024-06-28 01:36:34,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 643 transitions, 12427 flow [2024-06-28 01:36:34,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-28 01:36:34,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099099099099099 [2024-06-28 01:36:34,284 INFO L175 Difference]: Start difference. First operand has 363 places, 614 transitions, 10888 flow. Second operand 12 states and 182 transitions. [2024-06-28 01:36:34,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 643 transitions, 12427 flow [2024-06-28 01:36:35,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 643 transitions, 11896 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-28 01:36:35,239 INFO L231 Difference]: Finished difference. Result has 365 places, 614 transitions, 10845 flow [2024-06-28 01:36:35,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10357, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10845, PETRI_PLACES=365, PETRI_TRANSITIONS=614} [2024-06-28 01:36:35,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-28 01:36:35,239 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 614 transitions, 10845 flow [2024-06-28 01:36:35,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:35,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:35,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:35,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:36:35,239 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:35,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash -857839198, now seen corresponding path program 12 times [2024-06-28 01:36:35,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:35,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178084378] [2024-06-28 01:36:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:35,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:36,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:36,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178084378] [2024-06-28 01:36:36,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178084378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:36,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:36,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:36,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783133691] [2024-06-28 01:36:36,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:36,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:36,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:36,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:36,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:36,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:36,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 614 transitions, 10845 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:36,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:36,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:36,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:37,687 INFO L124 PetriNetUnfolderBase]: 2531/5117 cut-off events. [2024-06-28 01:36:37,687 INFO L125 PetriNetUnfolderBase]: For 134357/134360 co-relation queries the response was YES. [2024-06-28 01:36:37,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33926 conditions, 5117 events. 2531/5117 cut-off events. For 134357/134360 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40259 event pairs, 764 based on Foata normal form. 6/4730 useless extension candidates. Maximal degree in co-relation 33760. Up to 3689 conditions per place. [2024-06-28 01:36:37,736 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 471 selfloop transitions, 178 changer transitions 0/657 dead transitions. [2024-06-28 01:36:37,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 657 transitions, 12678 flow [2024-06-28 01:36:37,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:36:37,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-28 01:36:37,737 INFO L175 Difference]: Start difference. First operand has 365 places, 614 transitions, 10845 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:36:37,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 657 transitions, 12678 flow [2024-06-28 01:36:38,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 657 transitions, 12386 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 01:36:38,730 INFO L231 Difference]: Finished difference. Result has 366 places, 619 transitions, 11032 flow [2024-06-28 01:36:38,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10553, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11032, PETRI_PLACES=366, PETRI_TRANSITIONS=619} [2024-06-28 01:36:38,730 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-28 01:36:38,730 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 619 transitions, 11032 flow [2024-06-28 01:36:38,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:38,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:38,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:38,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:36:38,731 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:38,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash -857844933, now seen corresponding path program 15 times [2024-06-28 01:36:38,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:38,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551790738] [2024-06-28 01:36:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:38,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:39,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:39,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551790738] [2024-06-28 01:36:39,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551790738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:39,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:39,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:39,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668594114] [2024-06-28 01:36:39,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:39,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:39,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:39,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:39,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:39,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:39,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 619 transitions, 11032 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:39,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:39,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:39,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:41,088 INFO L124 PetriNetUnfolderBase]: 2577/5213 cut-off events. [2024-06-28 01:36:41,088 INFO L125 PetriNetUnfolderBase]: For 132807/132810 co-relation queries the response was YES. [2024-06-28 01:36:41,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34662 conditions, 5213 events. 2577/5213 cut-off events. For 132807/132810 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 41165 event pairs, 810 based on Foata normal form. 5/4820 useless extension candidates. Maximal degree in co-relation 34495. Up to 4167 conditions per place. [2024-06-28 01:36:41,156 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 537 selfloop transitions, 107 changer transitions 0/652 dead transitions. [2024-06-28 01:36:41,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 652 transitions, 12665 flow [2024-06-28 01:36:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:41,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:36:41,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:36:41,157 INFO L175 Difference]: Start difference. First operand has 366 places, 619 transitions, 11032 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:36:41,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 652 transitions, 12665 flow [2024-06-28 01:36:42,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 652 transitions, 12262 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 01:36:42,246 INFO L231 Difference]: Finished difference. Result has 369 places, 625 transitions, 10938 flow [2024-06-28 01:36:42,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10629, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10938, PETRI_PLACES=369, PETRI_TRANSITIONS=625} [2024-06-28 01:36:42,247 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-28 01:36:42,247 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 625 transitions, 10938 flow [2024-06-28 01:36:42,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:42,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:42,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:42,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:36:42,247 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:42,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:42,247 INFO L85 PathProgramCache]: Analyzing trace with hash -857992803, now seen corresponding path program 16 times [2024-06-28 01:36:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:42,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683007532] [2024-06-28 01:36:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:42,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:43,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:43,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683007532] [2024-06-28 01:36:43,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683007532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:43,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:43,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:43,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439853472] [2024-06-28 01:36:43,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:43,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:43,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:43,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:43,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:43,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:43,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 625 transitions, 10938 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:43,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:43,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:43,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:44,490 INFO L124 PetriNetUnfolderBase]: 2614/5282 cut-off events. [2024-06-28 01:36:44,490 INFO L125 PetriNetUnfolderBase]: For 140817/140820 co-relation queries the response was YES. [2024-06-28 01:36:44,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34969 conditions, 5282 events. 2614/5282 cut-off events. For 140817/140820 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 41791 event pairs, 794 based on Foata normal form. 5/4892 useless extension candidates. Maximal degree in co-relation 34800. Up to 4026 conditions per place. [2024-06-28 01:36:44,556 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 530 selfloop transitions, 120 changer transitions 0/658 dead transitions. [2024-06-28 01:36:44,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 658 transitions, 12724 flow [2024-06-28 01:36:44,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:44,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:36:44,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:36:44,557 INFO L175 Difference]: Start difference. First operand has 369 places, 625 transitions, 10938 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:36:44,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 658 transitions, 12724 flow [2024-06-28 01:36:45,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 658 transitions, 12506 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:45,657 INFO L231 Difference]: Finished difference. Result has 372 places, 627 transitions, 11012 flow [2024-06-28 01:36:45,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10720, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11012, PETRI_PLACES=372, PETRI_TRANSITIONS=627} [2024-06-28 01:36:45,657 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 331 predicate places. [2024-06-28 01:36:45,657 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 627 transitions, 11012 flow [2024-06-28 01:36:45,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:45,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:45,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:45,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:36:45,658 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:45,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:45,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1685924958, now seen corresponding path program 13 times [2024-06-28 01:36:45,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:45,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634741183] [2024-06-28 01:36:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:45,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:46,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:46,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634741183] [2024-06-28 01:36:46,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634741183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:46,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:46,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:46,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823719190] [2024-06-28 01:36:46,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:46,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:46,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:46,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:46,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:46,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:46,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 627 transitions, 11012 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:46,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:46,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:46,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:47,840 INFO L124 PetriNetUnfolderBase]: 2626/5316 cut-off events. [2024-06-28 01:36:47,840 INFO L125 PetriNetUnfolderBase]: For 140342/140345 co-relation queries the response was YES. [2024-06-28 01:36:47,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35284 conditions, 5316 events. 2626/5316 cut-off events. For 140342/140345 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 42143 event pairs, 819 based on Foata normal form. 4/4912 useless extension candidates. Maximal degree in co-relation 35114. Up to 4146 conditions per place. [2024-06-28 01:36:47,907 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 546 selfloop transitions, 133 changer transitions 0/687 dead transitions. [2024-06-28 01:36:47,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 687 transitions, 13127 flow [2024-06-28 01:36:47,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:36:47,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-28 01:36:47,908 INFO L175 Difference]: Start difference. First operand has 372 places, 627 transitions, 11012 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:36:47,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 687 transitions, 13127 flow [2024-06-28 01:36:49,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 687 transitions, 12976 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 01:36:49,209 INFO L231 Difference]: Finished difference. Result has 381 places, 658 transitions, 11764 flow [2024-06-28 01:36:49,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10861, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11764, PETRI_PLACES=381, PETRI_TRANSITIONS=658} [2024-06-28 01:36:49,209 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-28 01:36:49,209 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 658 transitions, 11764 flow [2024-06-28 01:36:49,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:49,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:49,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:49,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:36:49,210 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:49,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:49,210 INFO L85 PathProgramCache]: Analyzing trace with hash -857988928, now seen corresponding path program 14 times [2024-06-28 01:36:49,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:49,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648252111] [2024-06-28 01:36:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:49,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:50,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648252111] [2024-06-28 01:36:50,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648252111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:50,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:50,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:50,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171806840] [2024-06-28 01:36:50,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:50,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:50,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:50,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:50,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 658 transitions, 11764 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:50,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:50,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:50,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:51,785 INFO L124 PetriNetUnfolderBase]: 2671/5383 cut-off events. [2024-06-28 01:36:51,786 INFO L125 PetriNetUnfolderBase]: For 157748/157751 co-relation queries the response was YES. [2024-06-28 01:36:51,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36909 conditions, 5383 events. 2671/5383 cut-off events. For 157748/157751 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 42604 event pairs, 786 based on Foata normal form. 4/4972 useless extension candidates. Maximal degree in co-relation 36733. Up to 3739 conditions per place. [2024-06-28 01:36:51,857 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 466 selfloop transitions, 233 changer transitions 0/707 dead transitions. [2024-06-28 01:36:51,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 707 transitions, 14086 flow [2024-06-28 01:36:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:51,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:36:51,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:36:51,859 INFO L175 Difference]: Start difference. First operand has 381 places, 658 transitions, 11764 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:36:51,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 707 transitions, 14086 flow [2024-06-28 01:36:53,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 707 transitions, 13963 flow, removed 57 selfloop flow, removed 2 redundant places. [2024-06-28 01:36:53,184 INFO L231 Difference]: Finished difference. Result has 393 places, 668 transitions, 12450 flow [2024-06-28 01:36:53,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11641, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12450, PETRI_PLACES=393, PETRI_TRANSITIONS=668} [2024-06-28 01:36:53,184 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-28 01:36:53,185 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 668 transitions, 12450 flow [2024-06-28 01:36:53,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:53,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:53,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:53,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:36:53,185 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:53,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:53,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1680355188, now seen corresponding path program 15 times [2024-06-28 01:36:53,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:53,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88496415] [2024-06-28 01:36:53,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:53,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:54,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:54,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88496415] [2024-06-28 01:36:54,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88496415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:54,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:54,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:54,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754000274] [2024-06-28 01:36:54,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:54,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:54,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:54,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:54,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:54,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:54,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 668 transitions, 12450 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:54,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:54,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:54,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:55,575 INFO L124 PetriNetUnfolderBase]: 2690/5411 cut-off events. [2024-06-28 01:36:55,575 INFO L125 PetriNetUnfolderBase]: For 170795/170798 co-relation queries the response was YES. [2024-06-28 01:36:55,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38190 conditions, 5411 events. 2690/5411 cut-off events. For 170795/170798 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 42744 event pairs, 784 based on Foata normal form. 6/4998 useless extension candidates. Maximal degree in co-relation 38010. Up to 3949 conditions per place. [2024-06-28 01:36:55,642 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 478 selfloop transitions, 216 changer transitions 0/702 dead transitions. [2024-06-28 01:36:55,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 702 transitions, 14262 flow [2024-06-28 01:36:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:36:55,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:36:55,643 INFO L175 Difference]: Start difference. First operand has 393 places, 668 transitions, 12450 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:36:55,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 702 transitions, 14262 flow [2024-06-28 01:36:57,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 702 transitions, 13941 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:57,079 INFO L231 Difference]: Finished difference. Result has 396 places, 671 transitions, 12681 flow [2024-06-28 01:36:57,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12149, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12681, PETRI_PLACES=396, PETRI_TRANSITIONS=671} [2024-06-28 01:36:57,080 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-28 01:36:57,080 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 671 transitions, 12681 flow [2024-06-28 01:36:57,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:57,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:57,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:57,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:36:57,080 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:57,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:57,081 INFO L85 PathProgramCache]: Analyzing trace with hash 620528966, now seen corresponding path program 16 times [2024-06-28 01:36:57,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:57,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030960801] [2024-06-28 01:36:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030960801] [2024-06-28 01:36:57,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030960801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:57,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:57,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:57,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652484448] [2024-06-28 01:36:57,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:57,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:57,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:57,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:57,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:58,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:36:58,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 671 transitions, 12681 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:58,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:58,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:36:58,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:59,359 INFO L124 PetriNetUnfolderBase]: 2702/5429 cut-off events. [2024-06-28 01:36:59,359 INFO L125 PetriNetUnfolderBase]: For 165164/165167 co-relation queries the response was YES. [2024-06-28 01:36:59,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38595 conditions, 5429 events. 2702/5429 cut-off events. For 165164/165167 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 42869 event pairs, 823 based on Foata normal form. 4/5012 useless extension candidates. Maximal degree in co-relation 38412. Up to 4246 conditions per place. [2024-06-28 01:36:59,430 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 556 selfloop transitions, 145 changer transitions 0/709 dead transitions. [2024-06-28 01:36:59,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 709 transitions, 14774 flow [2024-06-28 01:36:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:36:59,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 01:36:59,432 INFO L175 Difference]: Start difference. First operand has 396 places, 671 transitions, 12681 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:36:59,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 709 transitions, 14774 flow [2024-06-28 01:37:01,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 709 transitions, 14262 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:01,024 INFO L231 Difference]: Finished difference. Result has 397 places, 679 transitions, 12683 flow [2024-06-28 01:37:01,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12198, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12683, PETRI_PLACES=397, PETRI_TRANSITIONS=679} [2024-06-28 01:37:01,024 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 356 predicate places. [2024-06-28 01:37:01,024 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 679 transitions, 12683 flow [2024-06-28 01:37:01,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:01,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:01,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:01,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:37:01,024 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:01,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash 620528811, now seen corresponding path program 17 times [2024-06-28 01:37:01,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:01,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819661825] [2024-06-28 01:37:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:02,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:02,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819661825] [2024-06-28 01:37:02,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819661825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:02,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:02,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:02,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202880056] [2024-06-28 01:37:02,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:02,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:02,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:02,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:02,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:02,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:02,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 679 transitions, 12683 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:02,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:02,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:02,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:03,623 INFO L124 PetriNetUnfolderBase]: 2719/5469 cut-off events. [2024-06-28 01:37:03,623 INFO L125 PetriNetUnfolderBase]: For 167226/167229 co-relation queries the response was YES. [2024-06-28 01:37:03,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38507 conditions, 5469 events. 2719/5469 cut-off events. For 167226/167229 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 43252 event pairs, 818 based on Foata normal form. 5/5052 useless extension candidates. Maximal degree in co-relation 38323. Up to 4396 conditions per place. [2024-06-28 01:37:03,702 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 584 selfloop transitions, 115 changer transitions 0/707 dead transitions. [2024-06-28 01:37:03,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 707 transitions, 14373 flow [2024-06-28 01:37:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:37:03,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-28 01:37:03,703 INFO L175 Difference]: Start difference. First operand has 397 places, 679 transitions, 12683 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:37:03,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 707 transitions, 14373 flow [2024-06-28 01:37:05,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 707 transitions, 14211 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:05,298 INFO L231 Difference]: Finished difference. Result has 402 places, 680 transitions, 12775 flow [2024-06-28 01:37:05,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12521, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12775, PETRI_PLACES=402, PETRI_TRANSITIONS=680} [2024-06-28 01:37:05,299 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-28 01:37:05,299 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 680 transitions, 12775 flow [2024-06-28 01:37:05,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:05,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:05,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:05,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:37:05,300 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:05,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:05,300 INFO L85 PathProgramCache]: Analyzing trace with hash 620534546, now seen corresponding path program 17 times [2024-06-28 01:37:05,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:05,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746264295] [2024-06-28 01:37:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:05,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:06,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746264295] [2024-06-28 01:37:06,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746264295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:06,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:06,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:06,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143906011] [2024-06-28 01:37:06,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:06,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:06,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:06,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:06,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:06,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:06,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 680 transitions, 12775 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:06,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:06,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:06,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:07,643 INFO L124 PetriNetUnfolderBase]: 2713/5460 cut-off events. [2024-06-28 01:37:07,643 INFO L125 PetriNetUnfolderBase]: For 161755/161758 co-relation queries the response was YES. [2024-06-28 01:37:07,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38352 conditions, 5460 events. 2713/5460 cut-off events. For 161755/161758 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 43231 event pairs, 787 based on Foata normal form. 6/5042 useless extension candidates. Maximal degree in co-relation 38166. Up to 3989 conditions per place. [2024-06-28 01:37:07,718 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 500 selfloop transitions, 206 changer transitions 0/714 dead transitions. [2024-06-28 01:37:07,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 714 transitions, 14558 flow [2024-06-28 01:37:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:37:07,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:37:07,719 INFO L175 Difference]: Start difference. First operand has 402 places, 680 transitions, 12775 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:37:07,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 714 transitions, 14558 flow [2024-06-28 01:37:09,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 714 transitions, 14256 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 01:37:09,149 INFO L231 Difference]: Finished difference. Result has 403 places, 680 transitions, 12903 flow [2024-06-28 01:37:09,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12473, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12903, PETRI_PLACES=403, PETRI_TRANSITIONS=680} [2024-06-28 01:37:09,149 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 362 predicate places. [2024-06-28 01:37:09,149 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 680 transitions, 12903 flow [2024-06-28 01:37:09,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:09,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:09,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:09,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:37:09,150 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:09,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:09,150 INFO L85 PathProgramCache]: Analyzing trace with hash 615022281, now seen corresponding path program 18 times [2024-06-28 01:37:09,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:09,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394203631] [2024-06-28 01:37:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:09,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:10,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394203631] [2024-06-28 01:37:10,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394203631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:10,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:10,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:10,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463122273] [2024-06-28 01:37:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:10,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:10,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:10,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:10,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:10,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:10,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 680 transitions, 12903 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:10,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:10,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:10,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:11,791 INFO L124 PetriNetUnfolderBase]: 2710/5455 cut-off events. [2024-06-28 01:37:11,791 INFO L125 PetriNetUnfolderBase]: For 150708/150711 co-relation queries the response was YES. [2024-06-28 01:37:11,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38242 conditions, 5455 events. 2710/5455 cut-off events. For 150708/150711 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 43191 event pairs, 819 based on Foata normal form. 5/5040 useless extension candidates. Maximal degree in co-relation 38056. Up to 4306 conditions per place. [2024-06-28 01:37:11,855 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 580 selfloop transitions, 121 changer transitions 0/709 dead transitions. [2024-06-28 01:37:11,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 709 transitions, 14603 flow [2024-06-28 01:37:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:37:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:37:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:37:11,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-28 01:37:11,856 INFO L175 Difference]: Start difference. First operand has 403 places, 680 transitions, 12903 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:37:11,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 709 transitions, 14603 flow [2024-06-28 01:37:13,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 709 transitions, 14133 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 01:37:13,240 INFO L231 Difference]: Finished difference. Result has 405 places, 680 transitions, 12685 flow [2024-06-28 01:37:13,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12433, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12685, PETRI_PLACES=405, PETRI_TRANSITIONS=680} [2024-06-28 01:37:13,240 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-28 01:37:13,241 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 680 transitions, 12685 flow [2024-06-28 01:37:13,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:13,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:13,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:13,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:37:13,241 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:13,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash 397470869, now seen corresponding path program 19 times [2024-06-28 01:37:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098183166] [2024-06-28 01:37:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:14,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098183166] [2024-06-28 01:37:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098183166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:14,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:14,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:14,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36400674] [2024-06-28 01:37:14,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:14,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:14,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:14,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:14,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:14,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 680 transitions, 12685 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:14,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:14,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:14,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:15,632 INFO L124 PetriNetUnfolderBase]: 2727/5496 cut-off events. [2024-06-28 01:37:15,632 INFO L125 PetriNetUnfolderBase]: For 151922/151922 co-relation queries the response was YES. [2024-06-28 01:37:15,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38207 conditions, 5496 events. 2727/5496 cut-off events. For 151922/151922 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 43639 event pairs, 995 based on Foata normal form. 2/5072 useless extension candidates. Maximal degree in co-relation 38020. Up to 4573 conditions per place. [2024-06-28 01:37:15,705 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 662 selfloop transitions, 35 changer transitions 0/705 dead transitions. [2024-06-28 01:37:15,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 705 transitions, 14346 flow [2024-06-28 01:37:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:37:15,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 01:37:15,706 INFO L175 Difference]: Start difference. First operand has 405 places, 680 transitions, 12685 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:37:15,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 705 transitions, 14346 flow [2024-06-28 01:37:17,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 705 transitions, 14094 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:17,087 INFO L231 Difference]: Finished difference. Result has 405 places, 681 transitions, 12531 flow [2024-06-28 01:37:17,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12433, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12531, PETRI_PLACES=405, PETRI_TRANSITIONS=681} [2024-06-28 01:37:17,087 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-28 01:37:17,087 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 681 transitions, 12531 flow [2024-06-28 01:37:17,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:17,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:17,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:17,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:37:17,088 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:17,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash 631051044, now seen corresponding path program 18 times [2024-06-28 01:37:17,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:17,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496017405] [2024-06-28 01:37:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:17,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:17,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:17,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496017405] [2024-06-28 01:37:17,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496017405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:17,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:17,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905421358] [2024-06-28 01:37:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:17,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:17,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:18,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:18,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 681 transitions, 12531 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:18,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:18,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:18,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:19,396 INFO L124 PetriNetUnfolderBase]: 2746/5524 cut-off events. [2024-06-28 01:37:19,396 INFO L125 PetriNetUnfolderBase]: For 158877/158877 co-relation queries the response was YES. [2024-06-28 01:37:19,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38385 conditions, 5524 events. 2746/5524 cut-off events. For 158877/158877 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 43820 event pairs, 992 based on Foata normal form. 3/5096 useless extension candidates. Maximal degree in co-relation 38197. Up to 4417 conditions per place. [2024-06-28 01:37:19,478 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 636 selfloop transitions, 75 changer transitions 0/719 dead transitions. [2024-06-28 01:37:19,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 719 transitions, 14452 flow [2024-06-28 01:37:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:37:19,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 01:37:19,479 INFO L175 Difference]: Start difference. First operand has 405 places, 681 transitions, 12531 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:37:19,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 719 transitions, 14452 flow [2024-06-28 01:37:20,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 719 transitions, 14364 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 01:37:20,993 INFO L231 Difference]: Finished difference. Result has 407 places, 684 transitions, 12698 flow [2024-06-28 01:37:20,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12443, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12698, PETRI_PLACES=407, PETRI_TRANSITIONS=684} [2024-06-28 01:37:20,994 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-28 01:37:20,994 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 684 transitions, 12698 flow [2024-06-28 01:37:20,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:20,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:20,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:20,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:37:20,994 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:20,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:20,994 INFO L85 PathProgramCache]: Analyzing trace with hash 249132772, now seen corresponding path program 19 times [2024-06-28 01:37:20,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:20,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296947313] [2024-06-28 01:37:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:20,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:21,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296947313] [2024-06-28 01:37:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296947313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:21,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:21,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910403592] [2024-06-28 01:37:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:21,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:21,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:21,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:21,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 684 transitions, 12698 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:21,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:21,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:21,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:23,573 INFO L124 PetriNetUnfolderBase]: 2765/5552 cut-off events. [2024-06-28 01:37:23,573 INFO L125 PetriNetUnfolderBase]: For 163290/163290 co-relation queries the response was YES. [2024-06-28 01:37:23,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38863 conditions, 5552 events. 2765/5552 cut-off events. For 163290/163290 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 43975 event pairs, 995 based on Foata normal form. 3/5120 useless extension candidates. Maximal degree in co-relation 38674. Up to 4627 conditions per place. [2024-06-28 01:37:23,641 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 679 selfloop transitions, 25 changer transitions 0/712 dead transitions. [2024-06-28 01:37:23,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 712 transitions, 14456 flow [2024-06-28 01:37:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:23,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 01:37:23,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-28 01:37:23,642 INFO L175 Difference]: Start difference. First operand has 407 places, 684 transitions, 12698 flow. Second operand 10 states and 152 transitions. [2024-06-28 01:37:23,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 712 transitions, 14456 flow [2024-06-28 01:37:25,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 712 transitions, 14241 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 01:37:25,072 INFO L231 Difference]: Finished difference. Result has 409 places, 687 transitions, 12644 flow [2024-06-28 01:37:25,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12483, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12644, PETRI_PLACES=409, PETRI_TRANSITIONS=687} [2024-06-28 01:37:25,073 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 368 predicate places. [2024-06-28 01:37:25,073 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 687 transitions, 12644 flow [2024-06-28 01:37:25,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:25,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:25,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:25,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:37:25,073 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:25,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash -35275178, now seen corresponding path program 20 times [2024-06-28 01:37:25,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:25,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996393966] [2024-06-28 01:37:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:25,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:25,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:25,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996393966] [2024-06-28 01:37:25,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996393966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:25,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:25,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:25,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542618625] [2024-06-28 01:37:25,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:25,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:25,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:25,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:26,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:26,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 687 transitions, 12644 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:26,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:26,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:26,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:27,524 INFO L124 PetriNetUnfolderBase]: 2784/5580 cut-off events. [2024-06-28 01:37:27,524 INFO L125 PetriNetUnfolderBase]: For 166598/166598 co-relation queries the response was YES. [2024-06-28 01:37:27,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38994 conditions, 5580 events. 2784/5580 cut-off events. For 166598/166598 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 44157 event pairs, 992 based on Foata normal form. 3/5144 useless extension candidates. Maximal degree in co-relation 38804. Up to 4582 conditions per place. [2024-06-28 01:37:27,602 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 666 selfloop transitions, 47 changer transitions 0/721 dead transitions. [2024-06-28 01:37:27,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 721 transitions, 14510 flow [2024-06-28 01:37:27,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:27,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:37:27,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-28 01:37:27,603 INFO L175 Difference]: Start difference. First operand has 409 places, 687 transitions, 12644 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:37:27,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 721 transitions, 14510 flow [2024-06-28 01:37:29,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 721 transitions, 14389 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 01:37:29,094 INFO L231 Difference]: Finished difference. Result has 411 places, 690 transitions, 12734 flow [2024-06-28 01:37:29,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12523, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12734, PETRI_PLACES=411, PETRI_TRANSITIONS=690} [2024-06-28 01:37:29,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-28 01:37:29,095 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 690 transitions, 12734 flow [2024-06-28 01:37:29,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:29,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:29,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:29,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:37:29,095 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:29,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash 513077924, now seen corresponding path program 21 times [2024-06-28 01:37:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:29,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074446763] [2024-06-28 01:37:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:29,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:29,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:29,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074446763] [2024-06-28 01:37:29,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074446763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:29,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:29,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:29,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187347015] [2024-06-28 01:37:29,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:29,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:29,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:29,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:30,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:30,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 690 transitions, 12734 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:30,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:30,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:30,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:31,544 INFO L124 PetriNetUnfolderBase]: 2815/5626 cut-off events. [2024-06-28 01:37:31,544 INFO L125 PetriNetUnfolderBase]: For 175133/175133 co-relation queries the response was YES. [2024-06-28 01:37:31,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39855 conditions, 5626 events. 2815/5626 cut-off events. For 175133/175133 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 44490 event pairs, 988 based on Foata normal form. 1/5183 useless extension candidates. Maximal degree in co-relation 39664. Up to 4532 conditions per place. [2024-06-28 01:37:31,624 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 662 selfloop transitions, 62 changer transitions 0/732 dead transitions. [2024-06-28 01:37:31,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 732 transitions, 15102 flow [2024-06-28 01:37:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:37:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:37:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:37:31,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:37:31,625 INFO L175 Difference]: Start difference. First operand has 411 places, 690 transitions, 12734 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:37:31,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 732 transitions, 15102 flow [2024-06-28 01:37:33,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 732 transitions, 14931 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 01:37:33,368 INFO L231 Difference]: Finished difference. Result has 416 places, 696 transitions, 12927 flow [2024-06-28 01:37:33,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12563, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12927, PETRI_PLACES=416, PETRI_TRANSITIONS=696} [2024-06-28 01:37:33,368 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-28 01:37:33,368 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 696 transitions, 12927 flow [2024-06-28 01:37:33,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:33,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:33,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:33,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:37:33,369 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:33,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash -35073368, now seen corresponding path program 22 times [2024-06-28 01:37:33,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:33,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51235512] [2024-06-28 01:37:33,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:33,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:34,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:34,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51235512] [2024-06-28 01:37:34,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51235512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:34,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:34,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:34,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519903456] [2024-06-28 01:37:34,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:34,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:34,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:34,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:34,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 696 transitions, 12927 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:34,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:34,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:34,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:35,890 INFO L124 PetriNetUnfolderBase]: 2826/5642 cut-off events. [2024-06-28 01:37:35,890 INFO L125 PetriNetUnfolderBase]: For 181966/181966 co-relation queries the response was YES. [2024-06-28 01:37:35,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40035 conditions, 5642 events. 2826/5642 cut-off events. For 181966/181966 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 44590 event pairs, 1001 based on Foata normal form. 3/5198 useless extension candidates. Maximal degree in co-relation 39841. Up to 4644 conditions per place. [2024-06-28 01:37:35,967 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 681 selfloop transitions, 44 changer transitions 0/733 dead transitions. [2024-06-28 01:37:35,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 733 transitions, 14857 flow [2024-06-28 01:37:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:37:35,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 01:37:35,968 INFO L175 Difference]: Start difference. First operand has 416 places, 696 transitions, 12927 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:37:35,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 733 transitions, 14857 flow [2024-06-28 01:37:37,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 733 transitions, 14659 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:37,706 INFO L231 Difference]: Finished difference. Result has 420 places, 698 transitions, 12914 flow [2024-06-28 01:37:37,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12745, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12914, PETRI_PLACES=420, PETRI_TRANSITIONS=698} [2024-06-28 01:37:37,707 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-28 01:37:37,707 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 698 transitions, 12914 flow [2024-06-28 01:37:37,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:37,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:37,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:37,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 01:37:37,708 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:37,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash -12636540, now seen corresponding path program 23 times [2024-06-28 01:37:37,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:37,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837441734] [2024-06-28 01:37:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:37,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:38,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837441734] [2024-06-28 01:37:38,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837441734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:38,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:38,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:38,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635022559] [2024-06-28 01:37:38,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:38,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:38,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:38,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:38,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:38,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 698 transitions, 12914 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:38,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:38,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:38,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:40,612 INFO L124 PetriNetUnfolderBase]: 2845/5670 cut-off events. [2024-06-28 01:37:40,612 INFO L125 PetriNetUnfolderBase]: For 185050/185050 co-relation queries the response was YES. [2024-06-28 01:37:40,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40430 conditions, 5670 events. 2845/5670 cut-off events. For 185050/185050 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 44752 event pairs, 998 based on Foata normal form. 3/5222 useless extension candidates. Maximal degree in co-relation 40235. Up to 4533 conditions per place. [2024-06-28 01:37:40,675 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 659 selfloop transitions, 78 changer transitions 0/745 dead transitions. [2024-06-28 01:37:40,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 745 transitions, 15026 flow [2024-06-28 01:37:40,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:37:40,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:37:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:37:40,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:37:40,676 INFO L175 Difference]: Start difference. First operand has 420 places, 698 transitions, 12914 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:37:40,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 745 transitions, 15026 flow [2024-06-28 01:37:42,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 745 transitions, 14879 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 01:37:42,142 INFO L231 Difference]: Finished difference. Result has 423 places, 701 transitions, 13053 flow [2024-06-28 01:37:42,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12767, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13053, PETRI_PLACES=423, PETRI_TRANSITIONS=701} [2024-06-28 01:37:42,143 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-28 01:37:42,143 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 701 transitions, 13053 flow [2024-06-28 01:37:42,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:42,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:42,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:42,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 01:37:42,143 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:42,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:42,143 INFO L85 PathProgramCache]: Analyzing trace with hash -35280913, now seen corresponding path program 20 times [2024-06-28 01:37:42,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:42,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760820069] [2024-06-28 01:37:42,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:42,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:43,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:43,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760820069] [2024-06-28 01:37:43,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760820069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:43,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:43,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:43,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467515515] [2024-06-28 01:37:43,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:43,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:43,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:43,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:43,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:43,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:43,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 701 transitions, 13053 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:43,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:43,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:43,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:44,642 INFO L124 PetriNetUnfolderBase]: 2862/5710 cut-off events. [2024-06-28 01:37:44,642 INFO L125 PetriNetUnfolderBase]: For 183039/183039 co-relation queries the response was YES. [2024-06-28 01:37:44,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40646 conditions, 5710 events. 2862/5710 cut-off events. For 183039/183039 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 45203 event pairs, 1019 based on Foata normal form. 2/5259 useless extension candidates. Maximal degree in co-relation 40450. Up to 4807 conditions per place. [2024-06-28 01:37:44,722 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 694 selfloop transitions, 20 changer transitions 0/722 dead transitions. [2024-06-28 01:37:44,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 722 transitions, 14678 flow [2024-06-28 01:37:44,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 01:37:44,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-06-28 01:37:44,723 INFO L175 Difference]: Start difference. First operand has 423 places, 701 transitions, 13053 flow. Second operand 10 states and 149 transitions. [2024-06-28 01:37:44,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 722 transitions, 14678 flow [2024-06-28 01:37:46,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 722 transitions, 14434 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 01:37:46,463 INFO L231 Difference]: Finished difference. Result has 424 places, 702 transitions, 12879 flow [2024-06-28 01:37:46,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12809, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12879, PETRI_PLACES=424, PETRI_TRANSITIONS=702} [2024-06-28 01:37:46,463 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-28 01:37:46,464 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 702 transitions, 12879 flow [2024-06-28 01:37:46,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:46,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:46,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:46,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 01:37:46,464 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:46,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash 249399899, now seen corresponding path program 1 times [2024-06-28 01:37:46,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:46,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716726623] [2024-06-28 01:37:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:47,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:47,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716726623] [2024-06-28 01:37:47,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716726623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:47,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:47,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:47,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580847940] [2024-06-28 01:37:47,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:47,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:47,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:47,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:47,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:47,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:47,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 702 transitions, 12879 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:47,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:47,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:47,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:48,897 INFO L124 PetriNetUnfolderBase]: 2856/5701 cut-off events. [2024-06-28 01:37:48,897 INFO L125 PetriNetUnfolderBase]: For 173797/173797 co-relation queries the response was YES. [2024-06-28 01:37:48,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39840 conditions, 5701 events. 2856/5701 cut-off events. For 173797/173797 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 45131 event pairs, 1010 based on Foata normal form. 3/5250 useless extension candidates. Maximal degree in co-relation 39643. Up to 4788 conditions per place. [2024-06-28 01:37:48,980 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 692 selfloop transitions, 22 changer transitions 0/722 dead transitions. [2024-06-28 01:37:48,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 722 transitions, 14533 flow [2024-06-28 01:37:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:48,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 01:37:48,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-06-28 01:37:48,981 INFO L175 Difference]: Start difference. First operand has 424 places, 702 transitions, 12879 flow. Second operand 10 states and 149 transitions. [2024-06-28 01:37:48,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 722 transitions, 14533 flow [2024-06-28 01:37:50,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 722 transitions, 14451 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 01:37:50,573 INFO L231 Difference]: Finished difference. Result has 426 places, 704 transitions, 12911 flow [2024-06-28 01:37:50,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12797, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=680, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12911, PETRI_PLACES=426, PETRI_TRANSITIONS=704} [2024-06-28 01:37:50,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 385 predicate places. [2024-06-28 01:37:50,574 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 704 transitions, 12911 flow [2024-06-28 01:37:50,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:50,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:50,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:50,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 01:37:50,574 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:50,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:50,575 INFO L85 PathProgramCache]: Analyzing trace with hash -18143225, now seen corresponding path program 21 times [2024-06-28 01:37:50,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:50,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464949038] [2024-06-28 01:37:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:50,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:51,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:51,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464949038] [2024-06-28 01:37:51,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464949038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:51,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:51,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:51,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712053865] [2024-06-28 01:37:51,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:51,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:51,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:51,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:51,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:51,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 704 transitions, 12911 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:51,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:51,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:51,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:53,206 INFO L124 PetriNetUnfolderBase]: 2873/5740 cut-off events. [2024-06-28 01:37:53,206 INFO L125 PetriNetUnfolderBase]: For 171583/171583 co-relation queries the response was YES. [2024-06-28 01:37:53,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39979 conditions, 5740 events. 2873/5740 cut-off events. For 171583/171583 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 45462 event pairs, 1029 based on Foata normal form. 2/5287 useless extension candidates. Maximal degree in co-relation 39781. Up to 4777 conditions per place. [2024-06-28 01:37:53,280 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 676 selfloop transitions, 43 changer transitions 0/727 dead transitions. [2024-06-28 01:37:53,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 727 transitions, 14585 flow [2024-06-28 01:37:53,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:53,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:53,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:37:53,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 01:37:53,281 INFO L175 Difference]: Start difference. First operand has 426 places, 704 transitions, 12911 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:37:53,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 727 transitions, 14585 flow [2024-06-28 01:37:54,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 727 transitions, 14489 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 01:37:54,919 INFO L231 Difference]: Finished difference. Result has 428 places, 705 transitions, 12933 flow [2024-06-28 01:37:54,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12815, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12933, PETRI_PLACES=428, PETRI_TRANSITIONS=705} [2024-06-28 01:37:54,920 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-28 01:37:54,920 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 705 transitions, 12933 flow [2024-06-28 01:37:54,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:54,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:54,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:54,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 01:37:54,921 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:54,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:54,921 INFO L85 PathProgramCache]: Analyzing trace with hash -18143070, now seen corresponding path program 24 times [2024-06-28 01:37:54,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:54,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798532035] [2024-06-28 01:37:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:54,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:55,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:55,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798532035] [2024-06-28 01:37:55,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798532035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:55,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:55,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:55,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421003952] [2024-06-28 01:37:55,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:55,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:55,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:55,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:55,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:55,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 705 transitions, 12933 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:55,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:55,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:55,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:57,374 INFO L124 PetriNetUnfolderBase]: 2879/5749 cut-off events. [2024-06-28 01:37:57,375 INFO L125 PetriNetUnfolderBase]: For 169792/169792 co-relation queries the response was YES. [2024-06-28 01:37:57,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40134 conditions, 5749 events. 2879/5749 cut-off events. For 169792/169792 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 45561 event pairs, 1029 based on Foata normal form. 1/5293 useless extension candidates. Maximal degree in co-relation 39935. Up to 4696 conditions per place. [2024-06-28 01:37:57,455 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 663 selfloop transitions, 68 changer transitions 0/739 dead transitions. [2024-06-28 01:37:57,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 739 transitions, 15070 flow [2024-06-28 01:37:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:37:57,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:37:57,456 INFO L175 Difference]: Start difference. First operand has 428 places, 705 transitions, 12933 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:37:57,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 739 transitions, 15070 flow [2024-06-28 01:37:59,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 739 transitions, 14962 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:37:59,439 INFO L231 Difference]: Finished difference. Result has 432 places, 718 transitions, 13296 flow [2024-06-28 01:37:59,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12825, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13296, PETRI_PLACES=432, PETRI_TRANSITIONS=718} [2024-06-28 01:37:59,440 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 391 predicate places. [2024-06-28 01:37:59,440 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 718 transitions, 13296 flow [2024-06-28 01:37:59,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:59,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:59,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:59,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 01:37:59,441 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:59,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:59,441 INFO L85 PathProgramCache]: Analyzing trace with hash -18146945, now seen corresponding path program 22 times [2024-06-28 01:37:59,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:59,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581793472] [2024-06-28 01:37:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:00,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:00,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581793472] [2024-06-28 01:38:00,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581793472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:00,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:00,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:00,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076973428] [2024-06-28 01:38:00,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:00,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:00,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:00,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:00,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:00,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:00,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 718 transitions, 13296 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:00,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:00,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:00,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:02,187 INFO L124 PetriNetUnfolderBase]: 2896/5781 cut-off events. [2024-06-28 01:38:02,187 INFO L125 PetriNetUnfolderBase]: For 178216/178216 co-relation queries the response was YES. [2024-06-28 01:38:02,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40545 conditions, 5781 events. 2896/5781 cut-off events. For 178216/178216 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 45867 event pairs, 1019 based on Foata normal form. 2/5330 useless extension candidates. Maximal degree in co-relation 40343. Up to 4699 conditions per place. [2024-06-28 01:38:02,267 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 691 selfloop transitions, 47 changer transitions 0/746 dead transitions. [2024-06-28 01:38:02,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 746 transitions, 15228 flow [2024-06-28 01:38:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:38:02,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 01:38:02,268 INFO L175 Difference]: Start difference. First operand has 432 places, 718 transitions, 13296 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:38:02,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 746 transitions, 15228 flow [2024-06-28 01:38:04,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 746 transitions, 15081 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:04,187 INFO L231 Difference]: Finished difference. Result has 437 places, 719 transitions, 13275 flow [2024-06-28 01:38:04,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13149, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13275, PETRI_PLACES=437, PETRI_TRANSITIONS=719} [2024-06-28 01:38:04,188 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-28 01:38:04,188 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 719 transitions, 13275 flow [2024-06-28 01:38:04,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:04,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:04,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:04,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 01:38:04,188 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:04,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash 625486854, now seen corresponding path program 25 times [2024-06-28 01:38:04,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:04,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78185680] [2024-06-28 01:38:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:04,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:05,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:05,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78185680] [2024-06-28 01:38:05,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78185680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:05,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:05,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:05,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499693277] [2024-06-28 01:38:05,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:05,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:05,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:05,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:05,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:05,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:05,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 719 transitions, 13275 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:05,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:05,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:05,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:06,769 INFO L124 PetriNetUnfolderBase]: 2915/5817 cut-off events. [2024-06-28 01:38:06,769 INFO L125 PetriNetUnfolderBase]: For 187620/187620 co-relation queries the response was YES. [2024-06-28 01:38:06,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41066 conditions, 5817 events. 2915/5817 cut-off events. For 187620/187620 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 46247 event pairs, 1008 based on Foata normal form. 3/5356 useless extension candidates. Maximal degree in co-relation 40862. Up to 4684 conditions per place. [2024-06-28 01:38:06,859 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 659 selfloop transitions, 85 changer transitions 0/752 dead transitions. [2024-06-28 01:38:06,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 752 transitions, 15249 flow [2024-06-28 01:38:06,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:38:06,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:38:06,860 INFO L175 Difference]: Start difference. First operand has 437 places, 719 transitions, 13275 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:38:06,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 752 transitions, 15249 flow [2024-06-28 01:38:08,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 752 transitions, 14968 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 01:38:08,896 INFO L231 Difference]: Finished difference. Result has 438 places, 723 transitions, 13344 flow [2024-06-28 01:38:08,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12994, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13344, PETRI_PLACES=438, PETRI_TRANSITIONS=723} [2024-06-28 01:38:08,896 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 397 predicate places. [2024-06-28 01:38:08,896 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 723 transitions, 13344 flow [2024-06-28 01:38:08,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:08,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:08,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:08,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 01:38:08,897 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:08,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:08,897 INFO L85 PathProgramCache]: Analyzing trace with hash 625481274, now seen corresponding path program 26 times [2024-06-28 01:38:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683547971] [2024-06-28 01:38:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:08,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:09,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:09,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683547971] [2024-06-28 01:38:09,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683547971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:09,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:09,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:09,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115549278] [2024-06-28 01:38:09,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:09,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:09,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:09,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:09,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:09,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:09,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 723 transitions, 13344 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:09,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:09,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:09,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:11,516 INFO L124 PetriNetUnfolderBase]: 2913/5814 cut-off events. [2024-06-28 01:38:11,516 INFO L125 PetriNetUnfolderBase]: For 173545/173545 co-relation queries the response was YES. [2024-06-28 01:38:11,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39998 conditions, 5814 events. 2913/5814 cut-off events. For 173545/173545 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 46153 event pairs, 1035 based on Foata normal form. 1/5351 useless extension candidates. Maximal degree in co-relation 39795. Up to 4817 conditions per place. [2024-06-28 01:38:11,594 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 683 selfloop transitions, 55 changer transitions 0/746 dead transitions. [2024-06-28 01:38:11,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 746 transitions, 15088 flow [2024-06-28 01:38:11,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:38:11,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-28 01:38:11,595 INFO L175 Difference]: Start difference. First operand has 438 places, 723 transitions, 13344 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:38:11,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 746 transitions, 15088 flow [2024-06-28 01:38:13,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 746 transitions, 14736 flow, removed 81 selfloop flow, removed 9 redundant places. [2024-06-28 01:38:13,487 INFO L231 Difference]: Finished difference. Result has 439 places, 725 transitions, 13133 flow [2024-06-28 01:38:13,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12992, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13133, PETRI_PLACES=439, PETRI_TRANSITIONS=725} [2024-06-28 01:38:13,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-28 01:38:13,487 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 725 transitions, 13133 flow [2024-06-28 01:38:13,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:13,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:13,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:13,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 01:38:13,488 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:13,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash 625481119, now seen corresponding path program 23 times [2024-06-28 01:38:13,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:13,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921353600] [2024-06-28 01:38:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:13,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:14,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:14,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921353600] [2024-06-28 01:38:14,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921353600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:14,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:14,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:14,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080433695] [2024-06-28 01:38:14,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:14,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:14,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:14,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:14,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:14,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:14,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 725 transitions, 13133 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:14,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:14,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:14,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:16,268 INFO L124 PetriNetUnfolderBase]: 2910/5809 cut-off events. [2024-06-28 01:38:16,269 INFO L125 PetriNetUnfolderBase]: For 166405/166405 co-relation queries the response was YES. [2024-06-28 01:38:16,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39246 conditions, 5809 events. 2910/5809 cut-off events. For 166405/166405 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 46110 event pairs, 1034 based on Foata normal form. 2/5348 useless extension candidates. Maximal degree in co-relation 39043. Up to 4860 conditions per place. [2024-06-28 01:38:16,330 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 702 selfloop transitions, 37 changer transitions 0/747 dead transitions. [2024-06-28 01:38:16,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 747 transitions, 14821 flow [2024-06-28 01:38:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 01:38:16,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-28 01:38:16,331 INFO L175 Difference]: Start difference. First operand has 439 places, 725 transitions, 13133 flow. Second operand 10 states and 152 transitions. [2024-06-28 01:38:16,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 747 transitions, 14821 flow [2024-06-28 01:38:18,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 747 transitions, 14686 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:18,115 INFO L231 Difference]: Finished difference. Result has 443 places, 725 transitions, 13076 flow [2024-06-28 01:38:18,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12998, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13076, PETRI_PLACES=443, PETRI_TRANSITIONS=725} [2024-06-28 01:38:18,116 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-28 01:38:18,116 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 725 transitions, 13076 flow [2024-06-28 01:38:18,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:18,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:18,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:18,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 01:38:18,117 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:18,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1971288099, now seen corresponding path program 1 times [2024-06-28 01:38:18,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:18,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909947817] [2024-06-28 01:38:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:18,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:18,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:18,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909947817] [2024-06-28 01:38:18,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909947817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:18,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:18,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:18,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242383212] [2024-06-28 01:38:18,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:18,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:18,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:18,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:18,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:18,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:18,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 725 transitions, 13076 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:18,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:18,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:18,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:20,748 INFO L124 PetriNetUnfolderBase]: 2956/5875 cut-off events. [2024-06-28 01:38:20,749 INFO L125 PetriNetUnfolderBase]: For 184845/184845 co-relation queries the response was YES. [2024-06-28 01:38:20,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40148 conditions, 5875 events. 2956/5875 cut-off events. For 184845/184845 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 46364 event pairs, 626 based on Foata normal form. 2/5432 useless extension candidates. Maximal degree in co-relation 39944. Up to 2463 conditions per place. [2024-06-28 01:38:20,837 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 593 selfloop transitions, 173 changer transitions 0/774 dead transitions. [2024-06-28 01:38:20,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 774 transitions, 15234 flow [2024-06-28 01:38:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:38:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:38:20,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:38:20,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:38:20,840 INFO L175 Difference]: Start difference. First operand has 443 places, 725 transitions, 13076 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:38:20,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 774 transitions, 15234 flow [2024-06-28 01:38:22,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 774 transitions, 14935 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 01:38:22,501 INFO L231 Difference]: Finished difference. Result has 446 places, 729 transitions, 13364 flow [2024-06-28 01:38:22,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12781, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13364, PETRI_PLACES=446, PETRI_TRANSITIONS=729} [2024-06-28 01:38:22,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-28 01:38:22,502 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 729 transitions, 13364 flow [2024-06-28 01:38:22,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:22,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:22,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:22,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 01:38:22,503 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:22,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:22,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1795752951, now seen corresponding path program 1 times [2024-06-28 01:38:22,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:22,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134640403] [2024-06-28 01:38:22,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:22,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:23,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:23,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134640403] [2024-06-28 01:38:23,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134640403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:23,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:23,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:23,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005905269] [2024-06-28 01:38:23,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:23,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:23,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:23,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:23,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:23,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:23,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 729 transitions, 13364 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:23,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:23,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:23,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:25,250 INFO L124 PetriNetUnfolderBase]: 3007/5990 cut-off events. [2024-06-28 01:38:25,251 INFO L125 PetriNetUnfolderBase]: For 206325/206325 co-relation queries the response was YES. [2024-06-28 01:38:25,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41821 conditions, 5990 events. 3007/5990 cut-off events. For 206325/206325 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 47753 event pairs, 869 based on Foata normal form. 2/5514 useless extension candidates. Maximal degree in co-relation 41615. Up to 4588 conditions per place. [2024-06-28 01:38:25,332 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 555 selfloop transitions, 209 changer transitions 0/772 dead transitions. [2024-06-28 01:38:25,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 772 transitions, 15766 flow [2024-06-28 01:38:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:38:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:38:25,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 210 transitions. [2024-06-28 01:38:25,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365904365904366 [2024-06-28 01:38:25,333 INFO L175 Difference]: Start difference. First operand has 446 places, 729 transitions, 13364 flow. Second operand 13 states and 210 transitions. [2024-06-28 01:38:25,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 772 transitions, 15766 flow [2024-06-28 01:38:27,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 772 transitions, 15471 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:27,471 INFO L231 Difference]: Finished difference. Result has 452 places, 742 transitions, 13992 flow [2024-06-28 01:38:27,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13085, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13992, PETRI_PLACES=452, PETRI_TRANSITIONS=742} [2024-06-28 01:38:27,472 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 411 predicate places. [2024-06-28 01:38:27,472 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 742 transitions, 13992 flow [2024-06-28 01:38:27,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:27,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:27,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:27,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 01:38:27,473 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:27,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:27,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1011811215, now seen corresponding path program 2 times [2024-06-28 01:38:27,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:27,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887737863] [2024-06-28 01:38:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:27,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:28,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:28,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887737863] [2024-06-28 01:38:28,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887737863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:28,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:28,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:28,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142959609] [2024-06-28 01:38:28,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:28,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:28,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:28,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:28,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:28,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:28,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 742 transitions, 13992 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:28,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:28,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:28,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:30,224 INFO L124 PetriNetUnfolderBase]: 3074/6103 cut-off events. [2024-06-28 01:38:30,225 INFO L125 PetriNetUnfolderBase]: For 219260/219260 co-relation queries the response was YES. [2024-06-28 01:38:30,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43120 conditions, 6103 events. 3074/6103 cut-off events. For 219260/219260 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 48658 event pairs, 815 based on Foata normal form. 2/5636 useless extension candidates. Maximal degree in co-relation 42912. Up to 3733 conditions per place. [2024-06-28 01:38:30,310 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 597 selfloop transitions, 187 changer transitions 0/792 dead transitions. [2024-06-28 01:38:30,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 792 transitions, 16141 flow [2024-06-28 01:38:30,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:38:30,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:38:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-06-28 01:38:30,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45114345114345117 [2024-06-28 01:38:30,311 INFO L175 Difference]: Start difference. First operand has 452 places, 742 transitions, 13992 flow. Second operand 13 states and 217 transitions. [2024-06-28 01:38:30,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 792 transitions, 16141 flow [2024-06-28 01:38:33,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 792 transitions, 15805 flow, removed 85 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:33,191 INFO L231 Difference]: Finished difference. Result has 457 places, 747 transitions, 14142 flow [2024-06-28 01:38:33,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13664, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14142, PETRI_PLACES=457, PETRI_TRANSITIONS=747} [2024-06-28 01:38:33,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 416 predicate places. [2024-06-28 01:38:33,191 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 747 transitions, 14142 flow [2024-06-28 01:38:33,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:33,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:33,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:33,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 01:38:33,192 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:33,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:33,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1244802297, now seen corresponding path program 3 times [2024-06-28 01:38:33,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:33,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743357618] [2024-06-28 01:38:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:33,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:33,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:33,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743357618] [2024-06-28 01:38:33,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743357618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:33,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:33,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:33,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964584018] [2024-06-28 01:38:33,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:33,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:33,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:33,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:33,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 747 transitions, 14142 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:33,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:33,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:33,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:36,046 INFO L124 PetriNetUnfolderBase]: 3131/6261 cut-off events. [2024-06-28 01:38:36,046 INFO L125 PetriNetUnfolderBase]: For 231457/231457 co-relation queries the response was YES. [2024-06-28 01:38:36,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44154 conditions, 6261 events. 3131/6261 cut-off events. For 231457/231457 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 50487 event pairs, 959 based on Foata normal form. 2/5776 useless extension candidates. Maximal degree in co-relation 43944. Up to 4729 conditions per place. [2024-06-28 01:38:36,126 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 583 selfloop transitions, 193 changer transitions 0/784 dead transitions. [2024-06-28 01:38:36,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 784 transitions, 16202 flow [2024-06-28 01:38:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:38:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:38:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 209 transitions. [2024-06-28 01:38:36,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43451143451143454 [2024-06-28 01:38:36,128 INFO L175 Difference]: Start difference. First operand has 457 places, 747 transitions, 14142 flow. Second operand 13 states and 209 transitions. [2024-06-28 01:38:36,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 784 transitions, 16202 flow [2024-06-28 01:38:38,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 784 transitions, 15962 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:38:38,587 INFO L231 Difference]: Finished difference. Result has 461 places, 751 transitions, 14388 flow [2024-06-28 01:38:38,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13902, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14388, PETRI_PLACES=461, PETRI_TRANSITIONS=751} [2024-06-28 01:38:38,587 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-28 01:38:38,587 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 751 transitions, 14388 flow [2024-06-28 01:38:38,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:38,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:38,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:38,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 01:38:38,588 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:38,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:38,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1790926065, now seen corresponding path program 4 times [2024-06-28 01:38:38,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:38,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060186910] [2024-06-28 01:38:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:38,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:39,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:39,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060186910] [2024-06-28 01:38:39,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060186910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:39,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:39,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:39,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061272898] [2024-06-28 01:38:39,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:39,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:39,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:39,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:39,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:39,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:39,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 751 transitions, 14388 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:39,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:39,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:39,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:41,573 INFO L124 PetriNetUnfolderBase]: 3139/6324 cut-off events. [2024-06-28 01:38:41,573 INFO L125 PetriNetUnfolderBase]: For 224476/224476 co-relation queries the response was YES. [2024-06-28 01:38:41,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44518 conditions, 6324 events. 3139/6324 cut-off events. For 224476/224476 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 51404 event pairs, 879 based on Foata normal form. 2/5832 useless extension candidates. Maximal degree in co-relation 44306. Up to 4414 conditions per place. [2024-06-28 01:38:41,645 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 593 selfloop transitions, 189 changer transitions 0/790 dead transitions. [2024-06-28 01:38:41,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 790 transitions, 16435 flow [2024-06-28 01:38:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:38:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:38:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-06-28 01:38:41,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44282744282744285 [2024-06-28 01:38:41,646 INFO L175 Difference]: Start difference. First operand has 461 places, 751 transitions, 14388 flow. Second operand 13 states and 213 transitions. [2024-06-28 01:38:41,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 790 transitions, 16435 flow [2024-06-28 01:38:44,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 790 transitions, 16234 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:44,028 INFO L231 Difference]: Finished difference. Result has 466 places, 752 transitions, 14610 flow [2024-06-28 01:38:44,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14187, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14610, PETRI_PLACES=466, PETRI_TRANSITIONS=752} [2024-06-28 01:38:44,029 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 425 predicate places. [2024-06-28 01:38:44,029 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 752 transitions, 14610 flow [2024-06-28 01:38:44,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:44,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:44,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:44,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 01:38:44,029 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:44,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:44,029 INFO L85 PathProgramCache]: Analyzing trace with hash 768312787, now seen corresponding path program 5 times [2024-06-28 01:38:44,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:44,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432391995] [2024-06-28 01:38:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:44,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:44,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:44,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432391995] [2024-06-28 01:38:44,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432391995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:44,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:44,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:44,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321204483] [2024-06-28 01:38:44,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:44,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:44,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:44,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:44,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:44,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:44,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 752 transitions, 14610 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:44,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:44,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:44,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:46,947 INFO L124 PetriNetUnfolderBase]: 3136/6289 cut-off events. [2024-06-28 01:38:46,948 INFO L125 PetriNetUnfolderBase]: For 217645/217645 co-relation queries the response was YES. [2024-06-28 01:38:47,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44692 conditions, 6289 events. 3136/6289 cut-off events. For 217645/217645 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 50939 event pairs, 981 based on Foata normal form. 2/5795 useless extension candidates. Maximal degree in co-relation 44478. Up to 4942 conditions per place. [2024-06-28 01:38:47,042 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 571 selfloop transitions, 200 changer transitions 0/779 dead transitions. [2024-06-28 01:38:47,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 779 transitions, 16341 flow [2024-06-28 01:38:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:38:47,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:38:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-06-28 01:38:47,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42411642411642414 [2024-06-28 01:38:47,044 INFO L175 Difference]: Start difference. First operand has 466 places, 752 transitions, 14610 flow. Second operand 13 states and 204 transitions. [2024-06-28 01:38:47,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 779 transitions, 16341 flow [2024-06-28 01:38:49,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 779 transitions, 15933 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-28 01:38:49,789 INFO L231 Difference]: Finished difference. Result has 469 places, 752 transitions, 14616 flow [2024-06-28 01:38:49,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14202, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14616, PETRI_PLACES=469, PETRI_TRANSITIONS=752} [2024-06-28 01:38:49,790 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-28 01:38:49,790 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 752 transitions, 14616 flow [2024-06-28 01:38:49,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:49,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:49,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:49,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:38:49,790 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:49,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:49,791 INFO L85 PathProgramCache]: Analyzing trace with hash -86956879, now seen corresponding path program 6 times [2024-06-28 01:38:49,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:49,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335185492] [2024-06-28 01:38:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:49,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:50,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:50,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335185492] [2024-06-28 01:38:50,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335185492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:50,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:50,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:38:50,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103962175] [2024-06-28 01:38:50,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:50,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:38:50,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:50,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:38:50,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:38:50,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:50,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 752 transitions, 14616 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:50,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:50,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:50,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:53,064 INFO L124 PetriNetUnfolderBase]: 3362/6802 cut-off events. [2024-06-28 01:38:53,064 INFO L125 PetriNetUnfolderBase]: For 300113/300116 co-relation queries the response was YES. [2024-06-28 01:38:53,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48465 conditions, 6802 events. 3362/6802 cut-off events. For 300113/300116 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 56316 event pairs, 989 based on Foata normal form. 5/6301 useless extension candidates. Maximal degree in co-relation 48250. Up to 4299 conditions per place. [2024-06-28 01:38:53,165 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 675 selfloop transitions, 138 changer transitions 0/821 dead transitions. [2024-06-28 01:38:53,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 821 transitions, 17122 flow [2024-06-28 01:38:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:38:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:38:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 224 transitions. [2024-06-28 01:38:53,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656964656964657 [2024-06-28 01:38:53,166 INFO L175 Difference]: Start difference. First operand has 469 places, 752 transitions, 14616 flow. Second operand 13 states and 224 transitions. [2024-06-28 01:38:53,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 821 transitions, 17122 flow [2024-06-28 01:38:56,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 821 transitions, 16727 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:38:56,949 INFO L231 Difference]: Finished difference. Result has 472 places, 762 transitions, 14780 flow [2024-06-28 01:38:56,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14234, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14780, PETRI_PLACES=472, PETRI_TRANSITIONS=762} [2024-06-28 01:38:56,950 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-28 01:38:56,950 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 762 transitions, 14780 flow [2024-06-28 01:38:56,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:56,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:56,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:56,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:38:56,951 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:56,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:56,951 INFO L85 PathProgramCache]: Analyzing trace with hash -28864429, now seen corresponding path program 7 times [2024-06-28 01:38:56,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:56,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638052279] [2024-06-28 01:38:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:56,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:57,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:57,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638052279] [2024-06-28 01:38:57,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638052279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:57,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:57,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:38:57,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121522235] [2024-06-28 01:38:57,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:57,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:38:57,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:57,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:38:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:38:58,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:58,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 762 transitions, 14780 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:58,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:58,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:58,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:00,372 INFO L124 PetriNetUnfolderBase]: 3400/6918 cut-off events. [2024-06-28 01:39:00,372 INFO L125 PetriNetUnfolderBase]: For 307375/307378 co-relation queries the response was YES. [2024-06-28 01:39:00,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49344 conditions, 6918 events. 3400/6918 cut-off events. For 307375/307378 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 57758 event pairs, 1008 based on Foata normal form. 5/6413 useless extension candidates. Maximal degree in co-relation 49127. Up to 4639 conditions per place. [2024-06-28 01:39:00,477 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 664 selfloop transitions, 146 changer transitions 0/818 dead transitions. [2024-06-28 01:39:00,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 818 transitions, 17125 flow [2024-06-28 01:39:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:39:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:39:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 218 transitions. [2024-06-28 01:39:00,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45322245322245325 [2024-06-28 01:39:00,478 INFO L175 Difference]: Start difference. First operand has 472 places, 762 transitions, 14780 flow. Second operand 13 states and 218 transitions. [2024-06-28 01:39:00,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 818 transitions, 17125 flow [2024-06-28 01:39:04,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 818 transitions, 16944 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:39:04,135 INFO L231 Difference]: Finished difference. Result has 476 places, 765 transitions, 14974 flow [2024-06-28 01:39:04,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14599, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14974, PETRI_PLACES=476, PETRI_TRANSITIONS=765} [2024-06-28 01:39:04,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 435 predicate places. [2024-06-28 01:39:04,135 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 765 transitions, 14974 flow [2024-06-28 01:39:04,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:04,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:04,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:04,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:39:04,136 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:04,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:04,136 INFO L85 PathProgramCache]: Analyzing trace with hash -28749109, now seen corresponding path program 8 times [2024-06-28 01:39:04,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:04,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343326414] [2024-06-28 01:39:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:04,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:05,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:05,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343326414] [2024-06-28 01:39:05,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343326414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:05,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:05,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:39:05,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950046624] [2024-06-28 01:39:05,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:05,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:39:05,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:05,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:39:05,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:39:05,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:39:05,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 765 transitions, 14974 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:05,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:05,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:39:05,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:07,646 INFO L124 PetriNetUnfolderBase]: 3438/6983 cut-off events. [2024-06-28 01:39:07,646 INFO L125 PetriNetUnfolderBase]: For 314025/314028 co-relation queries the response was YES. [2024-06-28 01:39:07,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50301 conditions, 6983 events. 3438/6983 cut-off events. For 314025/314028 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 58237 event pairs, 1122 based on Foata normal form. 5/6462 useless extension candidates. Maximal degree in co-relation 50082. Up to 5108 conditions per place. [2024-06-28 01:39:07,763 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 657 selfloop transitions, 151 changer transitions 0/816 dead transitions. [2024-06-28 01:39:07,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 816 transitions, 17279 flow [2024-06-28 01:39:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:39:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:39:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 225 transitions. [2024-06-28 01:39:07,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343629343629344 [2024-06-28 01:39:07,765 INFO L175 Difference]: Start difference. First operand has 476 places, 765 transitions, 14974 flow. Second operand 14 states and 225 transitions. [2024-06-28 01:39:07,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 816 transitions, 17279 flow [2024-06-28 01:39:11,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 816 transitions, 16970 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 01:39:11,213 INFO L231 Difference]: Finished difference. Result has 479 places, 768 transitions, 15056 flow [2024-06-28 01:39:11,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14671, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=15056, PETRI_PLACES=479, PETRI_TRANSITIONS=768} [2024-06-28 01:39:11,214 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-28 01:39:11,214 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 768 transitions, 15056 flow [2024-06-28 01:39:11,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:11,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:11,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:11,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:39:11,214 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:11,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash -28744459, now seen corresponding path program 9 times [2024-06-28 01:39:11,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:11,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859388474] [2024-06-28 01:39:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:11,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:12,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:12,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859388474] [2024-06-28 01:39:12,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859388474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:12,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:12,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:39:12,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911438994] [2024-06-28 01:39:12,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:12,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:39:12,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:12,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:39:12,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:39:12,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:39:12,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 768 transitions, 15056 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:12,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:12,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:39:12,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:14,632 INFO L124 PetriNetUnfolderBase]: 3419/6940 cut-off events. [2024-06-28 01:39:14,632 INFO L125 PetriNetUnfolderBase]: For 304536/304539 co-relation queries the response was YES. [2024-06-28 01:39:14,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48505 conditions, 6940 events. 3419/6940 cut-off events. For 304536/304539 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 57726 event pairs, 1150 based on Foata normal form. 17/6429 useless extension candidates. Maximal degree in co-relation 48285. Up to 5373 conditions per place. [2024-06-28 01:39:14,743 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 646 selfloop transitions, 156 changer transitions 0/810 dead transitions. [2024-06-28 01:39:14,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 810 transitions, 17013 flow [2024-06-28 01:39:14,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 01:39:14,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 01:39:14,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 231 transitions. [2024-06-28 01:39:14,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-28 01:39:14,744 INFO L175 Difference]: Start difference. First operand has 479 places, 768 transitions, 15056 flow. Second operand 15 states and 231 transitions. [2024-06-28 01:39:14,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 810 transitions, 17013 flow [2024-06-28 01:39:17,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 810 transitions, 16673 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-06-28 01:39:17,880 INFO L231 Difference]: Finished difference. Result has 482 places, 768 transitions, 15063 flow [2024-06-28 01:39:17,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14716, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=15063, PETRI_PLACES=482, PETRI_TRANSITIONS=768} [2024-06-28 01:39:17,880 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-28 01:39:17,881 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 768 transitions, 15063 flow [2024-06-28 01:39:17,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:17,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:17,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:17,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:39:17,881 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:17,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:17,882 INFO L85 PathProgramCache]: Analyzing trace with hash -28744273, now seen corresponding path program 2 times [2024-06-28 01:39:17,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:17,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698907534] [2024-06-28 01:39:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:17,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:18,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698907534] [2024-06-28 01:39:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698907534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:18,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:18,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:39:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950235508] [2024-06-28 01:39:18,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:18,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:39:18,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:39:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:39:18,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:39:18,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 768 transitions, 15063 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:18,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:18,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:39:18,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:21,141 INFO L124 PetriNetUnfolderBase]: 3469/6999 cut-off events. [2024-06-28 01:39:21,141 INFO L125 PetriNetUnfolderBase]: For 251503/251506 co-relation queries the response was YES. [2024-06-28 01:39:21,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49500 conditions, 6999 events. 3469/6999 cut-off events. For 251503/251506 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 58143 event pairs, 1163 based on Foata normal form. 5/6464 useless extension candidates. Maximal degree in co-relation 49279. Up to 5703 conditions per place. [2024-06-28 01:39:21,250 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 676 selfloop transitions, 131 changer transitions 0/815 dead transitions. [2024-06-28 01:39:21,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 815 transitions, 17545 flow [2024-06-28 01:39:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:39:21,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:39:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-06-28 01:39:21,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42411642411642414 [2024-06-28 01:39:21,251 INFO L175 Difference]: Start difference. First operand has 482 places, 768 transitions, 15063 flow. Second operand 13 states and 204 transitions. [2024-06-28 01:39:21,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 815 transitions, 17545 flow [2024-06-28 01:39:24,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 815 transitions, 17283 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 01:39:24,581 INFO L231 Difference]: Finished difference. Result has 483 places, 780 transitions, 15415 flow [2024-06-28 01:39:24,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14801, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15415, PETRI_PLACES=483, PETRI_TRANSITIONS=780} [2024-06-28 01:39:24,582 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 442 predicate places. [2024-06-28 01:39:24,582 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 780 transitions, 15415 flow [2024-06-28 01:39:24,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:24,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:24,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:24,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:39:24,582 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:24,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:24,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1636265459, now seen corresponding path program 3 times [2024-06-28 01:39:24,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:24,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147352965] [2024-06-28 01:39:24,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:24,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:25,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:25,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147352965] [2024-06-28 01:39:25,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147352965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:25,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:25,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:39:25,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50750808] [2024-06-28 01:39:25,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:25,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:39:25,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:25,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:39:25,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:39:25,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:39:25,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 780 transitions, 15415 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:25,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:25,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:39:25,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:27,951 INFO L124 PetriNetUnfolderBase]: 3492/7034 cut-off events. [2024-06-28 01:39:27,951 INFO L125 PetriNetUnfolderBase]: For 258534/258537 co-relation queries the response was YES. [2024-06-28 01:39:28,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50040 conditions, 7034 events. 3492/7034 cut-off events. For 258534/258537 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 58409 event pairs, 1164 based on Foata normal form. 5/6493 useless extension candidates. Maximal degree in co-relation 49818. Up to 5777 conditions per place. [2024-06-28 01:39:28,056 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 701 selfloop transitions, 108 changer transitions 0/817 dead transitions. [2024-06-28 01:39:28,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 817 transitions, 17717 flow [2024-06-28 01:39:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:39:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:39:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 01:39:28,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-28 01:39:28,057 INFO L175 Difference]: Start difference. First operand has 483 places, 780 transitions, 15415 flow. Second operand 12 states and 189 transitions. [2024-06-28 01:39:28,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 817 transitions, 17717 flow [2024-06-28 01:39:31,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 817 transitions, 17497 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:31,474 INFO L231 Difference]: Finished difference. Result has 489 places, 786 transitions, 15599 flow [2024-06-28 01:39:31,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15219, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15599, PETRI_PLACES=489, PETRI_TRANSITIONS=786} [2024-06-28 01:39:31,475 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 448 predicate places. [2024-06-28 01:39:31,475 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 786 transitions, 15599 flow [2024-06-28 01:39:31,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:31,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:31,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:31,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 01:39:31,476 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:31,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:31,476 INFO L85 PathProgramCache]: Analyzing trace with hash 650233033, now seen corresponding path program 4 times [2024-06-28 01:39:31,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:31,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075228046] [2024-06-28 01:39:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:31,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:32,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:32,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075228046] [2024-06-28 01:39:32,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075228046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:32,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:32,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:39:32,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343623672] [2024-06-28 01:39:32,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:32,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:39:32,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:32,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:39:32,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:39:32,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:39:32,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 786 transitions, 15599 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:32,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:32,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:39:32,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:34,769 INFO L124 PetriNetUnfolderBase]: 3515/7069 cut-off events. [2024-06-28 01:39:34,769 INFO L125 PetriNetUnfolderBase]: For 261501/261504 co-relation queries the response was YES. [2024-06-28 01:39:34,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50441 conditions, 7069 events. 3515/7069 cut-off events. For 261501/261504 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 58668 event pairs, 1165 based on Foata normal form. 5/6522 useless extension candidates. Maximal degree in co-relation 50217. Up to 5877 conditions per place. [2024-06-28 01:39:34,876 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 732 selfloop transitions, 78 changer transitions 0/818 dead transitions. [2024-06-28 01:39:34,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 818 transitions, 17583 flow [2024-06-28 01:39:34,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:39:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:39:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 01:39:34,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-06-28 01:39:34,877 INFO L175 Difference]: Start difference. First operand has 489 places, 786 transitions, 15599 flow. Second operand 12 states and 184 transitions. [2024-06-28 01:39:34,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 818 transitions, 17583 flow [2024-06-28 01:39:38,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 818 transitions, 17221 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-06-28 01:39:38,520 INFO L231 Difference]: Finished difference. Result has 492 places, 792 transitions, 15581 flow [2024-06-28 01:39:38,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15249, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15581, PETRI_PLACES=492, PETRI_TRANSITIONS=792} [2024-06-28 01:39:38,520 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 451 predicate places. [2024-06-28 01:39:38,520 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 792 transitions, 15581 flow [2024-06-28 01:39:38,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:38,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:38,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:38,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 01:39:38,521 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:38,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:38,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1631796809, now seen corresponding path program 5 times [2024-06-28 01:39:38,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:38,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44155704] [2024-06-28 01:39:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:38,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:39,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:39,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44155704] [2024-06-28 01:39:39,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44155704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:39,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:39,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:39:39,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182848039] [2024-06-28 01:39:39,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:39,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:39:39,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:39,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:39:39,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:39:39,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:39:39,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 792 transitions, 15581 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:39,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:39,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:39:39,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:41,942 INFO L124 PetriNetUnfolderBase]: 3511/7063 cut-off events. [2024-06-28 01:39:41,943 INFO L125 PetriNetUnfolderBase]: For 247984/247987 co-relation queries the response was YES. [2024-06-28 01:39:42,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49815 conditions, 7063 events. 3511/7063 cut-off events. For 247984/247987 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 58688 event pairs, 1164 based on Foata normal form. 5/6516 useless extension candidates. Maximal degree in co-relation 49590. Up to 5839 conditions per place. [2024-06-28 01:39:42,062 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 709 selfloop transitions, 104 changer transitions 0/821 dead transitions. [2024-06-28 01:39:42,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 821 transitions, 17432 flow [2024-06-28 01:39:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:39:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:39:42,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 209 transitions. [2024-06-28 01:39:42,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034749034749035 [2024-06-28 01:39:42,064 INFO L175 Difference]: Start difference. First operand has 492 places, 792 transitions, 15581 flow. Second operand 14 states and 209 transitions. [2024-06-28 01:39:42,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 821 transitions, 17432 flow [2024-06-28 01:39:45,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 821 transitions, 17174 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-28 01:39:45,597 INFO L231 Difference]: Finished difference. Result has 498 places, 794 transitions, 15605 flow [2024-06-28 01:39:45,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15323, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=15605, PETRI_PLACES=498, PETRI_TRANSITIONS=794} [2024-06-28 01:39:45,598 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 457 predicate places. [2024-06-28 01:39:45,598 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 794 transitions, 15605 flow [2024-06-28 01:39:45,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:45,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:45,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:45,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 01:39:45,598 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:45,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:45,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1955241735, now seen corresponding path program 10 times [2024-06-28 01:39:45,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:45,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195268986] [2024-06-28 01:39:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:45,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:46,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195268986] [2024-06-28 01:39:46,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195268986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:46,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:46,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:39:46,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291134620] [2024-06-28 01:39:46,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:46,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:39:46,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:46,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:39:46,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:39:46,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:39:46,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 794 transitions, 15605 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:46,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:46,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:39:46,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:49,303 INFO L124 PetriNetUnfolderBase]: 3616/7330 cut-off events. [2024-06-28 01:39:49,304 INFO L125 PetriNetUnfolderBase]: For 330038/330041 co-relation queries the response was YES. [2024-06-28 01:39:49,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50932 conditions, 7330 events. 3616/7330 cut-off events. For 330038/330041 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 61368 event pairs, 1185 based on Foata normal form. 17/6780 useless extension candidates. Maximal degree in co-relation 50705. Up to 5535 conditions per place. [2024-06-28 01:39:49,425 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 644 selfloop transitions, 184 changer transitions 0/836 dead transitions. [2024-06-28 01:39:49,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 836 transitions, 17658 flow [2024-06-28 01:39:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:39:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:39:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-28 01:39:49,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47072072072072074 [2024-06-28 01:39:49,426 INFO L175 Difference]: Start difference. First operand has 498 places, 794 transitions, 15605 flow. Second operand 12 states and 209 transitions. [2024-06-28 01:39:49,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 836 transitions, 17658 flow [2024-06-28 01:39:53,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 836 transitions, 17317 flow, removed 22 selfloop flow, removed 12 redundant places. [2024-06-28 01:39:53,033 INFO L231 Difference]: Finished difference. Result has 498 places, 795 transitions, 15680 flow [2024-06-28 01:39:53,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15264, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15680, PETRI_PLACES=498, PETRI_TRANSITIONS=795} [2024-06-28 01:39:53,033 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 457 predicate places. [2024-06-28 01:39:53,033 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 795 transitions, 15680 flow [2024-06-28 01:39:53,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:53,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:53,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:53,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 01:39:53,034 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:53,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1955241921, now seen corresponding path program 6 times [2024-06-28 01:39:53,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:53,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165805638] [2024-06-28 01:39:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:53,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:53,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:53,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165805638] [2024-06-28 01:39:53,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165805638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:53,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:53,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:39:53,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450455724] [2024-06-28 01:39:53,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:53,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:39:53,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:53,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:39:53,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:39:54,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:39:54,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 795 transitions, 15680 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:54,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:54,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:39:54,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:56,677 INFO L124 PetriNetUnfolderBase]: 3678/7445 cut-off events. [2024-06-28 01:39:56,677 INFO L125 PetriNetUnfolderBase]: For 256929/256932 co-relation queries the response was YES. [2024-06-28 01:39:56,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52014 conditions, 7445 events. 3678/7445 cut-off events. For 256929/256932 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 62582 event pairs, 1151 based on Foata normal form. 5/6881 useless extension candidates. Maximal degree in co-relation 51786. Up to 5602 conditions per place. [2024-06-28 01:39:56,805 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 618 selfloop transitions, 242 changer transitions 0/868 dead transitions. [2024-06-28 01:39:56,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 868 transitions, 18271 flow [2024-06-28 01:39:56,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:39:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:39:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-28 01:39:56,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-28 01:39:56,806 INFO L175 Difference]: Start difference. First operand has 498 places, 795 transitions, 15680 flow. Second operand 12 states and 206 transitions. [2024-06-28 01:39:56,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 868 transitions, 18271 flow [2024-06-28 01:40:00,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 868 transitions, 17891 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:00,376 INFO L231 Difference]: Finished difference. Result has 502 places, 828 transitions, 16393 flow [2024-06-28 01:40:00,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15300, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16393, PETRI_PLACES=502, PETRI_TRANSITIONS=828} [2024-06-28 01:40:00,376 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-28 01:40:00,376 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 828 transitions, 16393 flow [2024-06-28 01:40:00,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:00,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:00,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:00,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 01:40:00,377 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:00,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1955068755, now seen corresponding path program 11 times [2024-06-28 01:40:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:00,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471624056] [2024-06-28 01:40:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:01,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:01,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471624056] [2024-06-28 01:40:01,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471624056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:01,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:01,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:01,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199839721] [2024-06-28 01:40:01,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:01,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:01,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:01,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:01,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:01,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:40:01,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 828 transitions, 16393 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:01,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:01,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:40:01,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:04,121 INFO L124 PetriNetUnfolderBase]: 3695/7499 cut-off events. [2024-06-28 01:40:04,121 INFO L125 PetriNetUnfolderBase]: For 263439/263442 co-relation queries the response was YES. [2024-06-28 01:40:04,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52978 conditions, 7499 events. 3695/7499 cut-off events. For 263439/263442 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 63060 event pairs, 1220 based on Foata normal form. 5/6932 useless extension candidates. Maximal degree in co-relation 52748. Up to 5613 conditions per place. [2024-06-28 01:40:04,242 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 672 selfloop transitions, 193 changer transitions 0/873 dead transitions. [2024-06-28 01:40:04,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 873 transitions, 18568 flow [2024-06-28 01:40:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:40:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:40:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 225 transitions. [2024-06-28 01:40:04,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4677754677754678 [2024-06-28 01:40:04,244 INFO L175 Difference]: Start difference. First operand has 502 places, 828 transitions, 16393 flow. Second operand 13 states and 225 transitions. [2024-06-28 01:40:04,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 873 transitions, 18568 flow [2024-06-28 01:40:07,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 873 transitions, 18174 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-28 01:40:07,750 INFO L231 Difference]: Finished difference. Result has 507 places, 829 transitions, 16437 flow [2024-06-28 01:40:07,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15999, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=16437, PETRI_PLACES=507, PETRI_TRANSITIONS=829} [2024-06-28 01:40:07,750 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 466 predicate places. [2024-06-28 01:40:07,751 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 829 transitions, 16437 flow [2024-06-28 01:40:07,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:07,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:07,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:07,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 01:40:07,751 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:07,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1955068941, now seen corresponding path program 7 times [2024-06-28 01:40:07,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:07,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253181460] [2024-06-28 01:40:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:07,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:08,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:08,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253181460] [2024-06-28 01:40:08,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253181460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:08,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:08,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:08,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009739797] [2024-06-28 01:40:08,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:08,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:08,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:08,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:08,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:40:08,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 829 transitions, 16437 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:08,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:08,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:40:08,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:11,533 INFO L124 PetriNetUnfolderBase]: 3725/7526 cut-off events. [2024-06-28 01:40:11,533 INFO L125 PetriNetUnfolderBase]: For 285198/285201 co-relation queries the response was YES. [2024-06-28 01:40:11,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53707 conditions, 7526 events. 3725/7526 cut-off events. For 285198/285201 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 63246 event pairs, 1180 based on Foata normal form. 5/6954 useless extension candidates. Maximal degree in co-relation 53476. Up to 5670 conditions per place. [2024-06-28 01:40:11,666 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 630 selfloop transitions, 240 changer transitions 0/878 dead transitions. [2024-06-28 01:40:11,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 878 transitions, 19035 flow [2024-06-28 01:40:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:40:11,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:40:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 233 transitions. [2024-06-28 01:40:11,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4498069498069498 [2024-06-28 01:40:11,667 INFO L175 Difference]: Start difference. First operand has 507 places, 829 transitions, 16437 flow. Second operand 14 states and 233 transitions. [2024-06-28 01:40:11,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 878 transitions, 19035 flow [2024-06-28 01:40:15,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 878 transitions, 18625 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-28 01:40:15,379 INFO L231 Difference]: Finished difference. Result has 512 places, 835 transitions, 16826 flow [2024-06-28 01:40:15,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16029, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=16826, PETRI_PLACES=512, PETRI_TRANSITIONS=835} [2024-06-28 01:40:15,380 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 471 predicate places. [2024-06-28 01:40:15,380 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 835 transitions, 16826 flow [2024-06-28 01:40:15,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:15,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:15,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:15,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 01:40:15,380 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:15,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1784246355, now seen corresponding path program 12 times [2024-06-28 01:40:15,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:15,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256123878] [2024-06-28 01:40:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:15,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:16,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256123878] [2024-06-28 01:40:16,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256123878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:16,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:16,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:16,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139243429] [2024-06-28 01:40:16,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:16,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:16,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:16,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:16,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:16,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:40:16,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 835 transitions, 16826 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:16,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:16,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:40:16,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:19,493 INFO L124 PetriNetUnfolderBase]: 3866/7832 cut-off events. [2024-06-28 01:40:19,494 INFO L125 PetriNetUnfolderBase]: For 386932/386935 co-relation queries the response was YES. [2024-06-28 01:40:19,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57474 conditions, 7832 events. 3866/7832 cut-off events. For 386932/386935 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 66452 event pairs, 1250 based on Foata normal form. 5/7258 useless extension candidates. Maximal degree in co-relation 57240. Up to 5416 conditions per place. [2024-06-28 01:40:19,594 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 680 selfloop transitions, 197 changer transitions 0/885 dead transitions. [2024-06-28 01:40:19,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 885 transitions, 19297 flow [2024-06-28 01:40:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:40:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:40:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-06-28 01:40:19,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-28 01:40:19,595 INFO L175 Difference]: Start difference. First operand has 512 places, 835 transitions, 16826 flow. Second operand 12 states and 219 transitions. [2024-06-28 01:40:19,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 885 transitions, 19297 flow [2024-06-28 01:40:24,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 885 transitions, 19069 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 01:40:24,138 INFO L231 Difference]: Finished difference. Result has 517 places, 837 transitions, 17078 flow [2024-06-28 01:40:24,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16598, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17078, PETRI_PLACES=517, PETRI_TRANSITIONS=837} [2024-06-28 01:40:24,139 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 476 predicate places. [2024-06-28 01:40:24,139 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 837 transitions, 17078 flow [2024-06-28 01:40:24,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:24,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:24,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:24,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 01:40:24,140 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:24,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1788834975, now seen corresponding path program 13 times [2024-06-28 01:40:24,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:24,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549495910] [2024-06-28 01:40:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:24,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:25,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549495910] [2024-06-28 01:40:25,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549495910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:25,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:25,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:25,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720550753] [2024-06-28 01:40:25,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:25,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:25,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:25,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:25,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:25,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:40:25,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 837 transitions, 17078 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:25,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:25,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:40:25,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:28,270 INFO L124 PetriNetUnfolderBase]: 3971/8111 cut-off events. [2024-06-28 01:40:28,270 INFO L125 PetriNetUnfolderBase]: For 477185/477188 co-relation queries the response was YES. [2024-06-28 01:40:28,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59102 conditions, 8111 events. 3971/8111 cut-off events. For 477185/477188 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 69547 event pairs, 1341 based on Foata normal form. 17/7521 useless extension candidates. Maximal degree in co-relation 58866. Up to 6165 conditions per place. [2024-06-28 01:40:28,410 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 690 selfloop transitions, 182 changer transitions 0/880 dead transitions. [2024-06-28 01:40:28,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 880 transitions, 19257 flow [2024-06-28 01:40:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:40:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:40:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 223 transitions. [2024-06-28 01:40:28,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46361746361746364 [2024-06-28 01:40:28,411 INFO L175 Difference]: Start difference. First operand has 517 places, 837 transitions, 17078 flow. Second operand 13 states and 223 transitions. [2024-06-28 01:40:28,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 880 transitions, 19257 flow [2024-06-28 01:40:33,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 880 transitions, 18921 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:33,771 INFO L231 Difference]: Finished difference. Result has 521 places, 838 transitions, 17159 flow [2024-06-28 01:40:33,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16754, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17159, PETRI_PLACES=521, PETRI_TRANSITIONS=838} [2024-06-28 01:40:33,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 480 predicate places. [2024-06-28 01:40:33,771 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 838 transitions, 17159 flow [2024-06-28 01:40:33,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:33,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:33,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:33,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 01:40:33,772 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:33,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:33,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1955064105, now seen corresponding path program 14 times [2024-06-28 01:40:33,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:33,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294219091] [2024-06-28 01:40:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:34,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:34,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294219091] [2024-06-28 01:40:34,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294219091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:34,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:34,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:34,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737995227] [2024-06-28 01:40:34,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:34,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:34,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:34,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:34,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:34,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:40:34,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 838 transitions, 17159 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:34,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:34,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:40:34,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:37,591 INFO L124 PetriNetUnfolderBase]: 4008/8204 cut-off events. [2024-06-28 01:40:37,592 INFO L125 PetriNetUnfolderBase]: For 411627/411630 co-relation queries the response was YES. [2024-06-28 01:40:37,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59987 conditions, 8204 events. 4008/8204 cut-off events. For 411627/411630 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 70486 event pairs, 1321 based on Foata normal form. 5/7599 useless extension candidates. Maximal degree in co-relation 59749. Up to 5900 conditions per place. [2024-06-28 01:40:37,729 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 683 selfloop transitions, 193 changer transitions 0/884 dead transitions. [2024-06-28 01:40:37,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 884 transitions, 19598 flow [2024-06-28 01:40:37,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:40:37,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:40:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-06-28 01:40:37,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-28 01:40:37,730 INFO L175 Difference]: Start difference. First operand has 521 places, 838 transitions, 17159 flow. Second operand 12 states and 213 transitions. [2024-06-28 01:40:37,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 884 transitions, 19598 flow [2024-06-28 01:40:42,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 884 transitions, 19240 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:42,902 INFO L231 Difference]: Finished difference. Result has 524 places, 840 transitions, 17257 flow [2024-06-28 01:40:42,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16801, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17257, PETRI_PLACES=524, PETRI_TRANSITIONS=840} [2024-06-28 01:40:42,902 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 483 predicate places. [2024-06-28 01:40:42,902 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 840 transitions, 17257 flow [2024-06-28 01:40:42,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:42,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:42,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:42,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 01:40:42,903 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:42,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:42,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1961744109, now seen corresponding path program 1 times [2024-06-28 01:40:42,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:42,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204221826] [2024-06-28 01:40:42,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:42,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:43,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:43,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204221826] [2024-06-28 01:40:43,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204221826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:43,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:43,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:43,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347987332] [2024-06-28 01:40:43,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:43,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:43,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:43,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:43,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:43,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:40:43,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 840 transitions, 17257 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:43,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:43,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:40:43,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:47,086 INFO L124 PetriNetUnfolderBase]: 4025/8225 cut-off events. [2024-06-28 01:40:47,086 INFO L125 PetriNetUnfolderBase]: For 417815/417815 co-relation queries the response was YES. [2024-06-28 01:40:47,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60216 conditions, 8225 events. 4025/8225 cut-off events. For 417815/417815 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 70984 event pairs, 1419 based on Foata normal form. 2/7618 useless extension candidates. Maximal degree in co-relation 59977. Up to 6756 conditions per place. [2024-06-28 01:40:47,229 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 788 selfloop transitions, 78 changer transitions 0/874 dead transitions. [2024-06-28 01:40:47,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 874 transitions, 19300 flow [2024-06-28 01:40:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:40:47,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:40:47,230 INFO L175 Difference]: Start difference. First operand has 524 places, 840 transitions, 17257 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:40:47,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 874 transitions, 19300 flow [2024-06-28 01:40:52,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 874 transitions, 19038 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:40:52,729 INFO L231 Difference]: Finished difference. Result has 529 places, 847 transitions, 17292 flow [2024-06-28 01:40:52,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16995, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=840, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=766, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17292, PETRI_PLACES=529, PETRI_TRANSITIONS=847} [2024-06-28 01:40:52,729 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 488 predicate places. [2024-06-28 01:40:52,730 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 847 transitions, 17292 flow [2024-06-28 01:40:52,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:52,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:52,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:52,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 01:40:52,730 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:52,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:52,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1961497845, now seen corresponding path program 15 times [2024-06-28 01:40:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:52,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802973783] [2024-06-28 01:40:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:52,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:53,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:53,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802973783] [2024-06-28 01:40:53,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802973783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:53,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:53,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:53,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279910473] [2024-06-28 01:40:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:53,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:53,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:53,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:53,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:53,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:40:53,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 847 transitions, 17292 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:53,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:53,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:40:53,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:57,695 INFO L124 PetriNetUnfolderBase]: 4006/8201 cut-off events. [2024-06-28 01:40:57,695 INFO L125 PetriNetUnfolderBase]: For 404847/404850 co-relation queries the response was YES. [2024-06-28 01:40:57,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58502 conditions, 8201 events. 4006/8201 cut-off events. For 404847/404850 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 70608 event pairs, 1340 based on Foata normal form. 17/7605 useless extension candidates. Maximal degree in co-relation 58259. Up to 6245 conditions per place. [2024-06-28 01:40:57,810 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 685 selfloop transitions, 192 changer transitions 0/885 dead transitions. [2024-06-28 01:40:57,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 885 transitions, 19398 flow [2024-06-28 01:40:57,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:40:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:40:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-28 01:40:57,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-28 01:40:57,811 INFO L175 Difference]: Start difference. First operand has 529 places, 847 transitions, 17292 flow. Second operand 12 states and 206 transitions. [2024-06-28 01:40:57,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 885 transitions, 19398 flow [2024-06-28 01:41:01,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 885 transitions, 19272 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:01,800 INFO L231 Difference]: Finished difference. Result has 535 places, 847 transitions, 17558 flow [2024-06-28 01:41:01,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17166, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17558, PETRI_PLACES=535, PETRI_TRANSITIONS=847} [2024-06-28 01:41:01,801 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 494 predicate places. [2024-06-28 01:41:01,801 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 847 transitions, 17558 flow [2024-06-28 01:41:01,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:01,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:01,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:01,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 01:41:01,801 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:01,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1961498031, now seen corresponding path program 8 times [2024-06-28 01:41:01,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:01,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366565315] [2024-06-28 01:41:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:01,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:02,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:02,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366565315] [2024-06-28 01:41:02,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366565315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:02,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:02,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:02,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004338518] [2024-06-28 01:41:02,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:02,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:02,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:02,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:02,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:02,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:41:02,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 847 transitions, 17558 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:02,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:02,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:41:02,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:06,491 INFO L124 PetriNetUnfolderBase]: 4002/8180 cut-off events. [2024-06-28 01:41:06,491 INFO L125 PetriNetUnfolderBase]: For 307254/307257 co-relation queries the response was YES. [2024-06-28 01:41:06,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58297 conditions, 8180 events. 4002/8180 cut-off events. For 307254/307257 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 70535 event pairs, 1289 based on Foata normal form. 5/7574 useless extension candidates. Maximal degree in co-relation 58053. Up to 6206 conditions per place. [2024-06-28 01:41:06,619 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 620 selfloop transitions, 252 changer transitions 0/880 dead transitions. [2024-06-28 01:41:06,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 880 transitions, 19595 flow [2024-06-28 01:41:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:41:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:41:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 01:41:06,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572072072072072 [2024-06-28 01:41:06,620 INFO L175 Difference]: Start difference. First operand has 535 places, 847 transitions, 17558 flow. Second operand 12 states and 203 transitions. [2024-06-28 01:41:06,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 880 transitions, 19595 flow [2024-06-28 01:41:10,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 880 transitions, 19207 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-28 01:41:10,925 INFO L231 Difference]: Finished difference. Result has 537 places, 847 transitions, 17679 flow [2024-06-28 01:41:10,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17170, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17679, PETRI_PLACES=537, PETRI_TRANSITIONS=847} [2024-06-28 01:41:10,925 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 496 predicate places. [2024-06-28 01:41:10,926 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 847 transitions, 17679 flow [2024-06-28 01:41:10,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:10,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:10,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:10,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 01:41:10,926 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:10,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:10,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1789008141, now seen corresponding path program 9 times [2024-06-28 01:41:10,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:10,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609388211] [2024-06-28 01:41:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:10,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:11,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609388211] [2024-06-28 01:41:11,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609388211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:11,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:11,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:11,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135311671] [2024-06-28 01:41:11,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:11,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:11,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:11,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:11,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:41:11,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 847 transitions, 17679 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:11,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:11,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:41:11,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:15,471 INFO L124 PetriNetUnfolderBase]: 4015/8200 cut-off events. [2024-06-28 01:41:15,471 INFO L125 PetriNetUnfolderBase]: For 313056/313059 co-relation queries the response was YES. [2024-06-28 01:41:15,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58704 conditions, 8200 events. 4015/8200 cut-off events. For 313056/313059 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 70662 event pairs, 1279 based on Foata normal form. 5/7590 useless extension candidates. Maximal degree in co-relation 58459. Up to 6225 conditions per place. [2024-06-28 01:41:15,596 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 637 selfloop transitions, 238 changer transitions 0/883 dead transitions. [2024-06-28 01:41:15,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 883 transitions, 19830 flow [2024-06-28 01:41:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:41:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:41:15,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-28 01:41:15,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-28 01:41:15,598 INFO L175 Difference]: Start difference. First operand has 537 places, 847 transitions, 17679 flow. Second operand 12 states and 207 transitions. [2024-06-28 01:41:15,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 883 transitions, 19830 flow [2024-06-28 01:41:19,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 883 transitions, 19308 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 01:41:19,952 INFO L231 Difference]: Finished difference. Result has 538 places, 849 transitions, 17746 flow [2024-06-28 01:41:19,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17157, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17746, PETRI_PLACES=538, PETRI_TRANSITIONS=849} [2024-06-28 01:41:19,952 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-28 01:41:19,952 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 849 transitions, 17746 flow [2024-06-28 01:41:19,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:19,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:19,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:19,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 01:41:19,953 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:19,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:19,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1784366511, now seen corresponding path program 10 times [2024-06-28 01:41:19,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:19,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589057436] [2024-06-28 01:41:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:20,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589057436] [2024-06-28 01:41:20,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589057436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:20,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:20,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:20,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532446438] [2024-06-28 01:41:20,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:20,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:20,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:20,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:20,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:21,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:41:21,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 849 transitions, 17746 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:21,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:21,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:41:21,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:24,522 INFO L124 PetriNetUnfolderBase]: 4028/8214 cut-off events. [2024-06-28 01:41:24,522 INFO L125 PetriNetUnfolderBase]: For 321412/321415 co-relation queries the response was YES. [2024-06-28 01:41:24,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59060 conditions, 8214 events. 4028/8214 cut-off events. For 321412/321415 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 70673 event pairs, 1324 based on Foata normal form. 5/7604 useless extension candidates. Maximal degree in co-relation 58814. Up to 6169 conditions per place. [2024-06-28 01:41:24,650 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 632 selfloop transitions, 250 changer transitions 0/890 dead transitions. [2024-06-28 01:41:24,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 890 transitions, 19974 flow [2024-06-28 01:41:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 01:41:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 01:41:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 247 transitions. [2024-06-28 01:41:24,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44504504504504505 [2024-06-28 01:41:24,651 INFO L175 Difference]: Start difference. First operand has 538 places, 849 transitions, 17746 flow. Second operand 15 states and 247 transitions. [2024-06-28 01:41:24,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 890 transitions, 19974 flow [2024-06-28 01:41:28,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 890 transitions, 19417 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-28 01:41:28,955 INFO L231 Difference]: Finished difference. Result has 545 places, 852 transitions, 17828 flow [2024-06-28 01:41:28,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17189, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=17828, PETRI_PLACES=545, PETRI_TRANSITIONS=852} [2024-06-28 01:41:28,956 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 504 predicate places. [2024-06-28 01:41:28,956 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 852 transitions, 17828 flow [2024-06-28 01:41:28,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:28,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:28,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:28,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 01:41:28,957 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:28,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:28,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1788830325, now seen corresponding path program 16 times [2024-06-28 01:41:28,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:28,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563962363] [2024-06-28 01:41:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:28,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:30,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:30,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563962363] [2024-06-28 01:41:30,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563962363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:30,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:30,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176113359] [2024-06-28 01:41:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:30,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:30,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:30,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:30,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:30,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:41:30,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 852 transitions, 17828 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:30,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:30,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:41:30,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:33,549 INFO L124 PetriNetUnfolderBase]: 4045/8270 cut-off events. [2024-06-28 01:41:33,549 INFO L125 PetriNetUnfolderBase]: For 323994/323997 co-relation queries the response was YES. [2024-06-28 01:41:33,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59293 conditions, 8270 events. 4045/8270 cut-off events. For 323994/323997 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 71209 event pairs, 1367 based on Foata normal form. 5/7655 useless extension candidates. Maximal degree in co-relation 59045. Up to 6241 conditions per place. [2024-06-28 01:41:33,670 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 706 selfloop transitions, 181 changer transitions 0/895 dead transitions. [2024-06-28 01:41:33,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 895 transitions, 19999 flow [2024-06-28 01:41:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:41:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:41:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 216 transitions. [2024-06-28 01:41:33,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:41:33,677 INFO L175 Difference]: Start difference. First operand has 545 places, 852 transitions, 17828 flow. Second operand 12 states and 216 transitions. [2024-06-28 01:41:33,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 895 transitions, 19999 flow [2024-06-28 01:41:37,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 895 transitions, 19406 flow, removed 51 selfloop flow, removed 12 redundant places. [2024-06-28 01:41:37,639 INFO L231 Difference]: Finished difference. Result has 545 places, 853 transitions, 17637 flow [2024-06-28 01:41:37,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17235, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17637, PETRI_PLACES=545, PETRI_TRANSITIONS=853} [2024-06-28 01:41:37,640 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 504 predicate places. [2024-06-28 01:41:37,640 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 853 transitions, 17637 flow [2024-06-28 01:41:37,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:37,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:37,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:37,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 01:41:37,641 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:37,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2079145329, now seen corresponding path program 17 times [2024-06-28 01:41:37,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:37,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627632990] [2024-06-28 01:41:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:37,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:38,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:38,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627632990] [2024-06-28 01:41:38,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627632990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:38,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:38,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:38,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323431913] [2024-06-28 01:41:38,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:38,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:38,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:38,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:38,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:38,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:41:38,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 853 transitions, 17637 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:38,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:38,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:41:38,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:42,479 INFO L124 PetriNetUnfolderBase]: 4062/8294 cut-off events. [2024-06-28 01:41:42,479 INFO L125 PetriNetUnfolderBase]: For 320295/320298 co-relation queries the response was YES. [2024-06-28 01:41:42,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59116 conditions, 8294 events. 4062/8294 cut-off events. For 320295/320298 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 71381 event pairs, 1349 based on Foata normal form. 5/7684 useless extension candidates. Maximal degree in co-relation 58867. Up to 6127 conditions per place. [2024-06-28 01:41:42,607 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 692 selfloop transitions, 200 changer transitions 0/900 dead transitions. [2024-06-28 01:41:42,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 900 transitions, 20100 flow [2024-06-28 01:41:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:41:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:41:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 234 transitions. [2024-06-28 01:41:42,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:41:42,608 INFO L175 Difference]: Start difference. First operand has 545 places, 853 transitions, 17637 flow. Second operand 13 states and 234 transitions. [2024-06-28 01:41:42,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 900 transitions, 20100 flow [2024-06-28 01:41:46,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 900 transitions, 19725 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 01:41:46,663 INFO L231 Difference]: Finished difference. Result has 549 places, 854 transitions, 17704 flow [2024-06-28 01:41:46,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17262, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17704, PETRI_PLACES=549, PETRI_TRANSITIONS=854} [2024-06-28 01:41:46,664 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 508 predicate places. [2024-06-28 01:41:46,664 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 854 transitions, 17704 flow [2024-06-28 01:41:46,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:46,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:46,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:46,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 01:41:46,665 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:46,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:46,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1784366325, now seen corresponding path program 18 times [2024-06-28 01:41:46,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:46,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824098144] [2024-06-28 01:41:46,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:46,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:47,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:47,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824098144] [2024-06-28 01:41:47,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824098144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:47,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:47,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:47,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404169661] [2024-06-28 01:41:47,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:47,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:47,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:47,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:47,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:47,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:41:47,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 854 transitions, 17704 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:47,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:47,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:41:47,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:51,565 INFO L124 PetriNetUnfolderBase]: 4059/8306 cut-off events. [2024-06-28 01:41:51,565 INFO L125 PetriNetUnfolderBase]: For 306933/306936 co-relation queries the response was YES. [2024-06-28 01:41:51,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58878 conditions, 8306 events. 4059/8306 cut-off events. For 306933/306936 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 71610 event pairs, 1364 based on Foata normal form. 5/7689 useless extension candidates. Maximal degree in co-relation 58628. Up to 6229 conditions per place. [2024-06-28 01:41:51,702 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 689 selfloop transitions, 200 changer transitions 0/897 dead transitions. [2024-06-28 01:41:51,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 897 transitions, 19879 flow [2024-06-28 01:41:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:41:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:41:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 240 transitions. [2024-06-28 01:41:51,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46332046332046334 [2024-06-28 01:41:51,703 INFO L175 Difference]: Start difference. First operand has 549 places, 854 transitions, 17704 flow. Second operand 14 states and 240 transitions. [2024-06-28 01:41:51,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 897 transitions, 19879 flow [2024-06-28 01:41:55,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 897 transitions, 19293 flow, removed 22 selfloop flow, removed 12 redundant places. [2024-06-28 01:41:55,720 INFO L231 Difference]: Finished difference. Result has 551 places, 854 transitions, 17529 flow [2024-06-28 01:41:55,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17118, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=854, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=17529, PETRI_PLACES=551, PETRI_TRANSITIONS=854} [2024-06-28 01:41:55,721 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 510 predicate places. [2024-06-28 01:41:55,721 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 854 transitions, 17529 flow [2024-06-28 01:41:55,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:55,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:55,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:55,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 01:41:55,721 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:55,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash 14503827, now seen corresponding path program 19 times [2024-06-28 01:41:55,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:55,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006520152] [2024-06-28 01:41:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:55,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:56,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006520152] [2024-06-28 01:41:56,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006520152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:56,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:56,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:56,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028653244] [2024-06-28 01:41:56,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:56,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:56,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:56,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:56,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:56,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:41:56,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 854 transitions, 17529 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:56,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:56,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:41:56,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:00,316 INFO L124 PetriNetUnfolderBase]: 4190/8555 cut-off events. [2024-06-28 01:42:00,316 INFO L125 PetriNetUnfolderBase]: For 404672/404675 co-relation queries the response was YES. [2024-06-28 01:42:00,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61163 conditions, 8555 events. 4190/8555 cut-off events. For 404672/404675 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 73625 event pairs, 1083 based on Foata normal form. 5/7974 useless extension candidates. Maximal degree in co-relation 60913. Up to 3774 conditions per place. [2024-06-28 01:42:00,439 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 635 selfloop transitions, 268 changer transitions 0/911 dead transitions. [2024-06-28 01:42:00,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 911 transitions, 20101 flow [2024-06-28 01:42:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:42:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:42:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-28 01:42:00,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:42:00,440 INFO L175 Difference]: Start difference. First operand has 551 places, 854 transitions, 17529 flow. Second operand 12 states and 210 transitions. [2024-06-28 01:42:00,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 911 transitions, 20101 flow