./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix056_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix056_power.oepc_pso.oepc_rmo.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/mix056_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix056_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:37:25,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:37:25,636 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:37:25,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:37:25,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:37:25,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:37:25,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:37:25,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:37:25,665 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:37:25,668 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:37:25,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:37:25,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:37:25,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:37:25,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:37:25,670 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:37:25,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:37:25,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:37:25,671 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:37:25,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:37:25,671 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:37:25,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:37:25,672 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:37:25,672 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:37:25,672 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:37:25,672 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:37:25,673 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:37:25,673 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:37:25,673 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:37:25,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:37:25,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:37:25,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:37:25,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:37:25,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:37:25,675 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:37:25,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:37:25,676 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:37:25,676 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:37:25,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:37:25,676 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:37:25,676 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:37:25,677 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:37:25,677 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:37:25,677 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:37:25,677 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:37:25,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:37:25,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:37:25,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:37:25,934 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:37:25,935 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:37:25,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix056_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 03:37:26,077 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:37:26,077 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:37:26,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix056_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:37:27,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:37:27,239 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:37:27,240 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:37:27,258 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923eb1c61/914c79c9e1e648f4b7d245d590a9ff0b/FLAG462b34c6c [2024-06-28 03:37:27,270 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923eb1c61/914c79c9e1e648f4b7d245d590a9ff0b [2024-06-28 03:37:27,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:37:27,271 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:37:27,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:37:27,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:37:27,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:37:27,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:37:26" (1/2) ... [2024-06-28 03:37:27,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33598c01 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:37:27, skipping insertion in model container [2024-06-28 03:37:27,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:37:26" (1/2) ... [2024-06-28 03:37:27,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e26bd4e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:37:27, skipping insertion in model container [2024-06-28 03:37:27,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:37:27" (2/2) ... [2024-06-28 03:37:27,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33598c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27, skipping insertion in model container [2024-06-28 03:37:27,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:37:27" (2/2) ... [2024-06-28 03:37:27,282 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:37:27,371 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:37:27,372 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ((((((((((((((((! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 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)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1)) [2024-06-28 03:37:27,373 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1)) [2024-06-28 03:37:27,373 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ((((((((((((((((! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 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)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1)) [2024-06-28 03:37:27,373 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:37:27,374 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 03:37:27,422 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:37:27,758 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:37:27,769 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:37:27,871 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:37:27,904 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:37:27,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27 WrapperNode [2024-06-28 03:37:27,905 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:37:27,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:37:27,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:37:27,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:37:27,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:27,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:27,966 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 124 [2024-06-28 03:37:27,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:37:27,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:37:27,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:37:27,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:37:27,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:27,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:27,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:27,993 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 03:37:27,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:27,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:28,001 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:28,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:28,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:28,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:28,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:37:28,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:37:28,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:37:28,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:37:28,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (1/1) ... [2024-06-28 03:37:28,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:37:28,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:37:28,032 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 03:37:28,045 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 03:37:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:37:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:37:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:37:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:37:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:37:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:37:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:37:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:37:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:37:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:37:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:37:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:37:28,076 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 03:37:28,204 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:37:28,206 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:37:28,486 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:37:28,486 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:37:28,623 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:37:28,623 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:37:28,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:37:28 BoogieIcfgContainer [2024-06-28 03:37:28,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:37:28,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:37:28,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:37:28,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:37:28,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:37:26" (1/4) ... [2024-06-28 03:37:28,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22117d3d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:37:28, skipping insertion in model container [2024-06-28 03:37:28,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:37:27" (2/4) ... [2024-06-28 03:37:28,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22117d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:37:28, skipping insertion in model container [2024-06-28 03:37:28,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:37:27" (3/4) ... [2024-06-28 03:37:28,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22117d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:37:28, skipping insertion in model container [2024-06-28 03:37:28,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:37:28" (4/4) ... [2024-06-28 03:37:28,632 INFO L112 eAbstractionObserver]: Analyzing ICFG mix056_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:37:28,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:37:28,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:37:28,646 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:37:28,699 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:37:28,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 03:37:28,753 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 03:37:28,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:37:28,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:37:28,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 03:37:28,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 03:37:28,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:37:28,771 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;@79154ce2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:37:28,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:37:28,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:37:28,774 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:37:28,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:37:28,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:28,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:37:28,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:28,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:28,779 INFO L85 PathProgramCache]: Analyzing trace with hash 367551624, now seen corresponding path program 1 times [2024-06-28 03:37:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:28,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696901007] [2024-06-28 03:37:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:28,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:29,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:29,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696901007] [2024-06-28 03:37:29,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696901007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:29,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:29,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:37:29,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115521591] [2024-06-28 03:37:29,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:29,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:37:29,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:29,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:37:29,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:37:29,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:29,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:29,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:29,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:29,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:29,955 INFO L124 PetriNetUnfolderBase]: 1659/2477 cut-off events. [2024-06-28 03:37:29,956 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 03:37:29,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5041 conditions, 2477 events. 1659/2477 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11203 event pairs, 1184 based on Foata normal form. 1/2437 useless extension candidates. Maximal degree in co-relation 5029. Up to 2465 conditions per place. [2024-06-28 03:37:29,970 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 33 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-06-28 03:37:29,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 171 flow [2024-06-28 03:37:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:37:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:37:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-06-28 03:37:29,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 03:37:29,980 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 70 transitions. [2024-06-28 03:37:29,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 171 flow [2024-06-28 03:37:29,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:37:29,984 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-28 03:37:29,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-28 03:37:29,988 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-28 03:37:29,988 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-28 03:37:29,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:29,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:29,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:29,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:37:29,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:29,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:29,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1029908673, now seen corresponding path program 1 times [2024-06-28 03:37:29,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:29,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138014744] [2024-06-28 03:37:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:29,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:30,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:30,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138014744] [2024-06-28 03:37:30,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138014744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:30,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:30,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:37:30,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927997495] [2024-06-28 03:37:30,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:30,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:37:30,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:30,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:37:30,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:37:30,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:30,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:30,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:30,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:30,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:30,822 INFO L124 PetriNetUnfolderBase]: 1653/2468 cut-off events. [2024-06-28 03:37:30,822 INFO L125 PetriNetUnfolderBase]: For 458/458 co-relation queries the response was YES. [2024-06-28 03:37:30,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5657 conditions, 2468 events. 1653/2468 cut-off events. For 458/458 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11175 event pairs, 1038 based on Foata normal form. 3/2470 useless extension candidates. Maximal degree in co-relation 5645. Up to 2441 conditions per place. [2024-06-28 03:37:30,833 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 40 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2024-06-28 03:37:30,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 238 flow [2024-06-28 03:37:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:37:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:37:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-06-28 03:37:30,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 03:37:30,836 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 90 transitions. [2024-06-28 03:37:30,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 238 flow [2024-06-28 03:37:30,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:37:30,839 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 134 flow [2024-06-28 03:37:30,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 03:37:30,840 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-28 03:37:30,840 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 134 flow [2024-06-28 03:37:30,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:30,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:30,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:30,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:37:30,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:30,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:30,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1862398783, now seen corresponding path program 1 times [2024-06-28 03:37:30,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:30,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730690384] [2024-06-28 03:37:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:30,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:31,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:31,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730690384] [2024-06-28 03:37:31,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730690384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:31,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:31,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:37:31,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229486943] [2024-06-28 03:37:31,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:31,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:37:31,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:37:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:37:31,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:31,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:31,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:31,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:31,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:31,588 INFO L124 PetriNetUnfolderBase]: 1661/2481 cut-off events. [2024-06-28 03:37:31,589 INFO L125 PetriNetUnfolderBase]: For 1306/1306 co-relation queries the response was YES. [2024-06-28 03:37:31,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6307 conditions, 2481 events. 1661/2481 cut-off events. For 1306/1306 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11220 event pairs, 812 based on Foata normal form. 5/2484 useless extension candidates. Maximal degree in co-relation 6293. Up to 2387 conditions per place. [2024-06-28 03:37:31,599 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 53 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2024-06-28 03:37:31,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 73 transitions, 392 flow [2024-06-28 03:37:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:37:31,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:37:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 03:37:31,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-06-28 03:37:31,608 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 134 flow. Second operand 5 states and 118 transitions. [2024-06-28 03:37:31,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 73 transitions, 392 flow [2024-06-28 03:37:31,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 73 transitions, 378 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:37:31,612 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 233 flow [2024-06-28 03:37:31,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2024-06-28 03:37:31,613 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-06-28 03:37:31,613 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 233 flow [2024-06-28 03:37:31,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:31,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:31,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:31,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:37:31,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:31,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:31,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1816671558, now seen corresponding path program 1 times [2024-06-28 03:37:31,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:31,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909975488] [2024-06-28 03:37:31,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:31,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:32,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:32,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909975488] [2024-06-28 03:37:32,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909975488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:32,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:32,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:37:32,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530974436] [2024-06-28 03:37:32,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:32,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:37:32,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:37:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:37:32,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:32,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:32,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:32,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:32,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:32,636 INFO L124 PetriNetUnfolderBase]: 1669/2493 cut-off events. [2024-06-28 03:37:32,637 INFO L125 PetriNetUnfolderBase]: For 3035/3038 co-relation queries the response was YES. [2024-06-28 03:37:32,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7426 conditions, 2493 events. 1669/2493 cut-off events. For 3035/3038 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11299 event pairs, 666 based on Foata normal form. 7/2498 useless extension candidates. Maximal degree in co-relation 7409. Up to 2373 conditions per place. [2024-06-28 03:37:32,649 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 60 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2024-06-28 03:37:32,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 84 transitions, 519 flow [2024-06-28 03:37:32,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:37:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:37:32,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 03:37:32,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2024-06-28 03:37:32,651 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 233 flow. Second operand 6 states and 139 transitions. [2024-06-28 03:37:32,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 84 transitions, 519 flow [2024-06-28 03:37:32,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 511 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 03:37:32,658 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 306 flow [2024-06-28 03:37:32,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-06-28 03:37:32,659 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-28 03:37:32,659 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 306 flow [2024-06-28 03:37:32,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:32,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:32,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:32,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:37:32,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:32,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash 482244504, now seen corresponding path program 1 times [2024-06-28 03:37:32,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:32,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981905308] [2024-06-28 03:37:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:32,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:33,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:33,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981905308] [2024-06-28 03:37:33,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981905308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:33,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:33,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:37:33,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419432979] [2024-06-28 03:37:33,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:33,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:37:33,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:33,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:37:33,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:37:33,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:33,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:33,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:33,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:33,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:33,754 INFO L124 PetriNetUnfolderBase]: 1681/2513 cut-off events. [2024-06-28 03:37:33,754 INFO L125 PetriNetUnfolderBase]: For 4785/4788 co-relation queries the response was YES. [2024-06-28 03:37:33,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8297 conditions, 2513 events. 1681/2513 cut-off events. For 4785/4788 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11425 event pairs, 502 based on Foata normal form. 12/2523 useless extension candidates. Maximal degree in co-relation 8277. Up to 2341 conditions per place. [2024-06-28 03:37:33,769 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 64 selfloop transitions, 23 changer transitions 0/91 dead transitions. [2024-06-28 03:37:33,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 91 transitions, 620 flow [2024-06-28 03:37:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 03:37:33,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-06-28 03:37:33,771 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 306 flow. Second operand 7 states and 156 transitions. [2024-06-28 03:37:33,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 91 transitions, 620 flow [2024-06-28 03:37:33,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 91 transitions, 571 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:37:33,794 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 333 flow [2024-06-28 03:37:33,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-06-28 03:37:33,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-28 03:37:33,796 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 333 flow [2024-06-28 03:37:33,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:33,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:33,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:33,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:37:33,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:33,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:33,798 INFO L85 PathProgramCache]: Analyzing trace with hash -16334918, now seen corresponding path program 1 times [2024-06-28 03:37:33,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:33,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013027404] [2024-06-28 03:37:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:33,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:34,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:34,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013027404] [2024-06-28 03:37:34,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013027404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:34,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:34,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:37:34,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856534278] [2024-06-28 03:37:34,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:34,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:37:34,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:34,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:37:34,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:37:34,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:34,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:34,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:34,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:34,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:34,669 INFO L124 PetriNetUnfolderBase]: 1676/2505 cut-off events. [2024-06-28 03:37:34,670 INFO L125 PetriNetUnfolderBase]: For 6458/6458 co-relation queries the response was YES. [2024-06-28 03:37:34,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8823 conditions, 2505 events. 1676/2505 cut-off events. For 6458/6458 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11357 event pairs, 659 based on Foata normal form. 2/2506 useless extension candidates. Maximal degree in co-relation 8801. Up to 2484 conditions per place. [2024-06-28 03:37:34,690 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 54 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2024-06-28 03:37:34,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 485 flow [2024-06-28 03:37:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:37:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:37:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-28 03:37:34,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-28 03:37:34,692 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 333 flow. Second operand 5 states and 86 transitions. [2024-06-28 03:37:34,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 485 flow [2024-06-28 03:37:34,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 421 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:37:34,697 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 293 flow [2024-06-28 03:37:34,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-06-28 03:37:34,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-28 03:37:34,700 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 293 flow [2024-06-28 03:37:34,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:34,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:34,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:34,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:37:34,701 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:34,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash -540544680, now seen corresponding path program 1 times [2024-06-28 03:37:34,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:34,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181041827] [2024-06-28 03:37:34,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:34,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:35,214 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 03:37:35,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:35,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181041827] [2024-06-28 03:37:35,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181041827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:35,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:35,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:37:35,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740547279] [2024-06-28 03:37:35,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:35,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:37:35,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:37:35,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:37:35,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:35,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:35,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:35,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:35,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:35,720 INFO L124 PetriNetUnfolderBase]: 1708/2551 cut-off events. [2024-06-28 03:37:35,720 INFO L125 PetriNetUnfolderBase]: For 7708/7708 co-relation queries the response was YES. [2024-06-28 03:37:35,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8929 conditions, 2551 events. 1708/2551 cut-off events. For 7708/7708 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11539 event pairs, 621 based on Foata normal form. 10/2560 useless extension candidates. Maximal degree in co-relation 8905. Up to 2402 conditions per place. [2024-06-28 03:37:35,730 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 70 selfloop transitions, 17 changer transitions 0/90 dead transitions. [2024-06-28 03:37:35,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 90 transitions, 609 flow [2024-06-28 03:37:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:37:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:37:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 03:37:35,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 03:37:35,732 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 293 flow. Second operand 6 states and 115 transitions. [2024-06-28 03:37:35,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 90 transitions, 609 flow [2024-06-28 03:37:35,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 587 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:37:35,736 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 402 flow [2024-06-28 03:37:35,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2024-06-28 03:37:35,737 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-06-28 03:37:35,738 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 402 flow [2024-06-28 03:37:35,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:35,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:35,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:35,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:37:35,738 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:35,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash 417263607, now seen corresponding path program 1 times [2024-06-28 03:37:35,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:35,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507537415] [2024-06-28 03:37:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:36,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:36,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507537415] [2024-06-28 03:37:36,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507537415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:36,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:36,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:37:36,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757569435] [2024-06-28 03:37:36,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:36,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:37:36,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:36,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:37:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:37:36,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:36,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:36,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:36,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:36,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:36,628 INFO L124 PetriNetUnfolderBase]: 1714/2561 cut-off events. [2024-06-28 03:37:36,628 INFO L125 PetriNetUnfolderBase]: For 10531/10537 co-relation queries the response was YES. [2024-06-28 03:37:36,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10002 conditions, 2561 events. 1714/2561 cut-off events. For 10531/10537 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11678 event pairs, 648 based on Foata normal form. 8/2567 useless extension candidates. Maximal degree in co-relation 9976. Up to 2464 conditions per place. [2024-06-28 03:37:36,642 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 66 selfloop transitions, 19 changer transitions 0/88 dead transitions. [2024-06-28 03:37:36,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 672 flow [2024-06-28 03:37:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:37:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:37:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 03:37:36,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 03:37:36,643 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 402 flow. Second operand 6 states and 110 transitions. [2024-06-28 03:37:36,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 672 flow [2024-06-28 03:37:36,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 654 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 03:37:36,652 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 456 flow [2024-06-28 03:37:36,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=456, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-06-28 03:37:36,653 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-28 03:37:36,653 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 456 flow [2024-06-28 03:37:36,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:36,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:36,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:36,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:37:36,654 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:36,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1482047577, now seen corresponding path program 2 times [2024-06-28 03:37:36,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:36,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337188737] [2024-06-28 03:37:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:36,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:37,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:37,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337188737] [2024-06-28 03:37:37,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337188737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:37,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:37,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:37:37,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999463462] [2024-06-28 03:37:37,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:37,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:37:37,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:37,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:37:37,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:37:37,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:37,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 456 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:37,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:37,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:37,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:37,542 INFO L124 PetriNetUnfolderBase]: 1699/2535 cut-off events. [2024-06-28 03:37:37,542 INFO L125 PetriNetUnfolderBase]: For 11815/11815 co-relation queries the response was YES. [2024-06-28 03:37:37,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10103 conditions, 2535 events. 1699/2535 cut-off events. For 11815/11815 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11429 event pairs, 644 based on Foata normal form. 2/2536 useless extension candidates. Maximal degree in co-relation 10074. Up to 2505 conditions per place. [2024-06-28 03:37:37,556 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 69 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-06-28 03:37:37,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 654 flow [2024-06-28 03:37:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:37:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:37:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 03:37:37,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-28 03:37:37,557 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 456 flow. Second operand 6 states and 101 transitions. [2024-06-28 03:37:37,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 654 flow [2024-06-28 03:37:37,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 625 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:37:37,567 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 457 flow [2024-06-28 03:37:37,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=457, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-06-28 03:37:37,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2024-06-28 03:37:37,568 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 457 flow [2024-06-28 03:37:37,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:37,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:37,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:37,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:37:37,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:37,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:37,569 INFO L85 PathProgramCache]: Analyzing trace with hash 50271257, now seen corresponding path program 1 times [2024-06-28 03:37:37,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:37,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191936165] [2024-06-28 03:37:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:37,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191936165] [2024-06-28 03:37:38,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191936165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:38,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:38,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:38,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180480514] [2024-06-28 03:37:38,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:38,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:38,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:38,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:38,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:38,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 457 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:38,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:38,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:38,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:38,588 INFO L124 PetriNetUnfolderBase]: 2147/3163 cut-off events. [2024-06-28 03:37:38,589 INFO L125 PetriNetUnfolderBase]: For 17025/17025 co-relation queries the response was YES. [2024-06-28 03:37:38,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12612 conditions, 3163 events. 2147/3163 cut-off events. For 17025/17025 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14636 event pairs, 606 based on Foata normal form. 20/3180 useless extension candidates. Maximal degree in co-relation 12582. Up to 2491 conditions per place. [2024-06-28 03:37:38,607 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 96 selfloop transitions, 29 changer transitions 0/128 dead transitions. [2024-06-28 03:37:38,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 128 transitions, 1038 flow [2024-06-28 03:37:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:38,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 03:37:38,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-28 03:37:38,609 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 457 flow. Second operand 7 states and 144 transitions. [2024-06-28 03:37:38,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 128 transitions, 1038 flow [2024-06-28 03:37:38,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 128 transitions, 991 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:38,624 INFO L231 Difference]: Finished difference. Result has 73 places, 87 transitions, 653 flow [2024-06-28 03:37:38,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=73, PETRI_TRANSITIONS=87} [2024-06-28 03:37:38,625 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-06-28 03:37:38,626 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 87 transitions, 653 flow [2024-06-28 03:37:38,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:38,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:38,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:38,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:37:38,627 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:38,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:38,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1301164041, now seen corresponding path program 2 times [2024-06-28 03:37:38,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:38,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267285584] [2024-06-28 03:37:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:38,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:39,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:39,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267285584] [2024-06-28 03:37:39,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267285584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:39,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:39,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:39,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034686063] [2024-06-28 03:37:39,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:39,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:39,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:39,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:39,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:39,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:39,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 87 transitions, 653 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:39,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:39,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:39,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:39,703 INFO L124 PetriNetUnfolderBase]: 2211/3253 cut-off events. [2024-06-28 03:37:39,704 INFO L125 PetriNetUnfolderBase]: For 22731/22731 co-relation queries the response was YES. [2024-06-28 03:37:39,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15333 conditions, 3253 events. 2211/3253 cut-off events. For 22731/22731 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15064 event pairs, 669 based on Foata normal form. 10/3262 useless extension candidates. Maximal degree in co-relation 15299. Up to 3051 conditions per place. [2024-06-28 03:37:39,725 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 104 selfloop transitions, 22 changer transitions 0/129 dead transitions. [2024-06-28 03:37:39,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 129 transitions, 1192 flow [2024-06-28 03:37:39,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 03:37:39,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-06-28 03:37:39,727 INFO L175 Difference]: Start difference. First operand has 73 places, 87 transitions, 653 flow. Second operand 7 states and 132 transitions. [2024-06-28 03:37:39,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 129 transitions, 1192 flow [2024-06-28 03:37:39,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 129 transitions, 1148 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-28 03:37:39,751 INFO L231 Difference]: Finished difference. Result has 81 places, 97 transitions, 788 flow [2024-06-28 03:37:39,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=788, PETRI_PLACES=81, PETRI_TRANSITIONS=97} [2024-06-28 03:37:39,751 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-06-28 03:37:39,751 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 97 transitions, 788 flow [2024-06-28 03:37:39,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:39,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:39,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:39,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:37:39,752 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:39,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:39,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1398099833, now seen corresponding path program 3 times [2024-06-28 03:37:39,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:39,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895579705] [2024-06-28 03:37:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:39,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:40,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:40,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895579705] [2024-06-28 03:37:40,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895579705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:40,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:40,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:40,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437443332] [2024-06-28 03:37:40,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:40,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:40,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:40,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:40,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 97 transitions, 788 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:40,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:40,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:40,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:40,820 INFO L124 PetriNetUnfolderBase]: 2243/3299 cut-off events. [2024-06-28 03:37:40,820 INFO L125 PetriNetUnfolderBase]: For 27003/27003 co-relation queries the response was YES. [2024-06-28 03:37:40,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16160 conditions, 3299 events. 2243/3299 cut-off events. For 27003/27003 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 15264 event pairs, 694 based on Foata normal form. 10/3308 useless extension candidates. Maximal degree in co-relation 16121. Up to 3202 conditions per place. [2024-06-28 03:37:40,841 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 105 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2024-06-28 03:37:40,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 129 transitions, 1225 flow [2024-06-28 03:37:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 03:37:40,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:37:40,843 INFO L175 Difference]: Start difference. First operand has 81 places, 97 transitions, 788 flow. Second operand 7 states and 126 transitions. [2024-06-28 03:37:40,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 129 transitions, 1225 flow [2024-06-28 03:37:40,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 129 transitions, 1182 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 03:37:40,862 INFO L231 Difference]: Finished difference. Result has 88 places, 105 transitions, 902 flow [2024-06-28 03:37:40,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=902, PETRI_PLACES=88, PETRI_TRANSITIONS=105} [2024-06-28 03:37:40,863 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-06-28 03:37:40,863 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 105 transitions, 902 flow [2024-06-28 03:37:40,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:40,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:40,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:40,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:37:40,864 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:40,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:40,865 INFO L85 PathProgramCache]: Analyzing trace with hash 227648855, now seen corresponding path program 1 times [2024-06-28 03:37:40,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:40,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504760998] [2024-06-28 03:37:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:40,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:41,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:41,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504760998] [2024-06-28 03:37:41,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504760998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:41,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:41,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:41,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462323410] [2024-06-28 03:37:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:41,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:41,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:41,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:41,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:41,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:41,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 105 transitions, 902 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:41,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:41,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:41,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:42,563 INFO L124 PetriNetUnfolderBase]: 2306/3400 cut-off events. [2024-06-28 03:37:42,564 INFO L125 PetriNetUnfolderBase]: For 30621/30621 co-relation queries the response was YES. [2024-06-28 03:37:42,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16817 conditions, 3400 events. 2306/3400 cut-off events. For 30621/30621 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15893 event pairs, 670 based on Foata normal form. 18/3417 useless extension candidates. Maximal degree in co-relation 16774. Up to 3147 conditions per place. [2024-06-28 03:37:42,584 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 114 selfloop transitions, 25 changer transitions 0/142 dead transitions. [2024-06-28 03:37:42,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 142 transitions, 1354 flow [2024-06-28 03:37:42,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:42,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:37:42,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 03:37:42,585 INFO L175 Difference]: Start difference. First operand has 88 places, 105 transitions, 902 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:37:42,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 142 transitions, 1354 flow [2024-06-28 03:37:42,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 142 transitions, 1301 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:37:42,610 INFO L231 Difference]: Finished difference. Result has 91 places, 107 transitions, 937 flow [2024-06-28 03:37:42,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=937, PETRI_PLACES=91, PETRI_TRANSITIONS=107} [2024-06-28 03:37:42,611 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-28 03:37:42,612 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 107 transitions, 937 flow [2024-06-28 03:37:42,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:42,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:42,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:42,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:37:42,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:42,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash -587697519, now seen corresponding path program 1 times [2024-06-28 03:37:42,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:42,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048884533] [2024-06-28 03:37:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:42,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:42,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048884533] [2024-06-28 03:37:42,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048884533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:42,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:42,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:37:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647454489] [2024-06-28 03:37:42,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:37:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:37:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:37:43,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:43,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 107 transitions, 937 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 03:37:43,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:43,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:43,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:43,514 INFO L124 PetriNetUnfolderBase]: 2297/3388 cut-off events. [2024-06-28 03:37:43,514 INFO L125 PetriNetUnfolderBase]: For 32681/32681 co-relation queries the response was YES. [2024-06-28 03:37:43,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17125 conditions, 3388 events. 2297/3388 cut-off events. For 32681/32681 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15797 event pairs, 706 based on Foata normal form. 3/3390 useless extension candidates. Maximal degree in co-relation 17081. Up to 3367 conditions per place. [2024-06-28 03:37:43,537 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 103 selfloop transitions, 10 changer transitions 0/116 dead transitions. [2024-06-28 03:37:43,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 1185 flow [2024-06-28 03:37:43,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:37:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:37:43,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-28 03:37:43,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-06-28 03:37:43,539 INFO L175 Difference]: Start difference. First operand has 91 places, 107 transitions, 937 flow. Second operand 5 states and 84 transitions. [2024-06-28 03:37:43,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 1185 flow [2024-06-28 03:37:43,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 1103 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:37:43,611 INFO L231 Difference]: Finished difference. Result has 91 places, 107 transitions, 883 flow [2024-06-28 03:37:43,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=883, PETRI_PLACES=91, PETRI_TRANSITIONS=107} [2024-06-28 03:37:43,611 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-28 03:37:43,612 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 107 transitions, 883 flow [2024-06-28 03:37:43,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 03:37:43,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:43,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:43,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:37:43,612 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:43,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash 696979022, now seen corresponding path program 1 times [2024-06-28 03:37:43,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:43,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700677027] [2024-06-28 03:37:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:43,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:44,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:44,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700677027] [2024-06-28 03:37:44,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700677027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:44,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:44,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:44,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547684942] [2024-06-28 03:37:44,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:44,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:44,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:44,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:44,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:44,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:44,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 107 transitions, 883 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:44,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:44,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:44,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:44,798 INFO L124 PetriNetUnfolderBase]: 2308/3405 cut-off events. [2024-06-28 03:37:44,798 INFO L125 PetriNetUnfolderBase]: For 35098/35107 co-relation queries the response was YES. [2024-06-28 03:37:44,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17204 conditions, 3405 events. 2308/3405 cut-off events. For 35098/35107 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15930 event pairs, 701 based on Foata normal form. 8/3411 useless extension candidates. Maximal degree in co-relation 17159. Up to 3268 conditions per place. [2024-06-28 03:37:44,821 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 111 selfloop transitions, 26 changer transitions 0/140 dead transitions. [2024-06-28 03:37:44,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 140 transitions, 1359 flow [2024-06-28 03:37:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:37:44,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-28 03:37:44,823 INFO L175 Difference]: Start difference. First operand has 91 places, 107 transitions, 883 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:37:44,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 140 transitions, 1359 flow [2024-06-28 03:37:44,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 140 transitions, 1325 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:37:44,854 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 995 flow [2024-06-28 03:37:44,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=995, PETRI_PLACES=94, PETRI_TRANSITIONS=113} [2024-06-28 03:37:44,855 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-28 03:37:44,855 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 995 flow [2024-06-28 03:37:44,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:44,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:44,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:44,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:37:44,856 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:44,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:44,856 INFO L85 PathProgramCache]: Analyzing trace with hash 696982742, now seen corresponding path program 2 times [2024-06-28 03:37:44,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:44,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805047810] [2024-06-28 03:37:44,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:44,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:45,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:45,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805047810] [2024-06-28 03:37:45,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805047810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:45,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:45,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:45,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108026848] [2024-06-28 03:37:45,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:45,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:45,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:45,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:45,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:45,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:45,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 113 transitions, 995 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:45,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:45,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:45,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:46,104 INFO L124 PetriNetUnfolderBase]: 2303/3398 cut-off events. [2024-06-28 03:37:46,104 INFO L125 PetriNetUnfolderBase]: For 39500/39509 co-relation queries the response was YES. [2024-06-28 03:37:46,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17768 conditions, 3398 events. 2303/3398 cut-off events. For 39500/39509 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15910 event pairs, 701 based on Foata normal form. 8/3404 useless extension candidates. Maximal degree in co-relation 17723. Up to 3296 conditions per place. [2024-06-28 03:37:46,122 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 110 selfloop transitions, 22 changer transitions 0/135 dead transitions. [2024-06-28 03:37:46,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 135 transitions, 1315 flow [2024-06-28 03:37:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:46,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:37:46,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-28 03:37:46,124 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 995 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:37:46,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 135 transitions, 1315 flow [2024-06-28 03:37:46,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 135 transitions, 1234 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 03:37:46,158 INFO L231 Difference]: Finished difference. Result has 98 places, 113 transitions, 966 flow [2024-06-28 03:37:46,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=966, PETRI_PLACES=98, PETRI_TRANSITIONS=113} [2024-06-28 03:37:46,159 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2024-06-28 03:37:46,159 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 113 transitions, 966 flow [2024-06-28 03:37:46,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:46,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:46,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:46,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:37:46,160 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:46,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:46,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1558410109, now seen corresponding path program 1 times [2024-06-28 03:37:46,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:46,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231488298] [2024-06-28 03:37:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:46,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:46,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:46,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231488298] [2024-06-28 03:37:46,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231488298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:46,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:46,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:46,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084442380] [2024-06-28 03:37:46,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:46,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:46,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:46,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:46,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 113 transitions, 966 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:46,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:46,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:46,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:47,382 INFO L124 PetriNetUnfolderBase]: 2928/4297 cut-off events. [2024-06-28 03:37:47,382 INFO L125 PetriNetUnfolderBase]: For 53265/53268 co-relation queries the response was YES. [2024-06-28 03:37:47,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22602 conditions, 4297 events. 2928/4297 cut-off events. For 53265/53268 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20883 event pairs, 1049 based on Foata normal form. 12/4306 useless extension candidates. Maximal degree in co-relation 22555. Up to 3412 conditions per place. [2024-06-28 03:37:47,403 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 132 selfloop transitions, 49 changer transitions 0/184 dead transitions. [2024-06-28 03:37:47,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 184 transitions, 1957 flow [2024-06-28 03:37:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:47,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:37:47,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 03:37:47,405 INFO L175 Difference]: Start difference. First operand has 98 places, 113 transitions, 966 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:37:47,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 184 transitions, 1957 flow [2024-06-28 03:37:47,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 184 transitions, 1879 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:47,458 INFO L231 Difference]: Finished difference. Result has 103 places, 140 transitions, 1347 flow [2024-06-28 03:37:47,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1347, PETRI_PLACES=103, PETRI_TRANSITIONS=140} [2024-06-28 03:37:47,459 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-28 03:37:47,459 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 140 transitions, 1347 flow [2024-06-28 03:37:47,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:47,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:47,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:47,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:37:47,459 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:47,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1497912129, now seen corresponding path program 2 times [2024-06-28 03:37:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:47,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985253874] [2024-06-28 03:37:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:47,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:47,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985253874] [2024-06-28 03:37:47,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985253874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:47,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:47,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:47,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191691654] [2024-06-28 03:37:47,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:47,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:47,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:47,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 140 transitions, 1347 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:47,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:47,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:47,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:48,903 INFO L124 PetriNetUnfolderBase]: 3820/5550 cut-off events. [2024-06-28 03:37:48,903 INFO L125 PetriNetUnfolderBase]: For 78233/78240 co-relation queries the response was YES. [2024-06-28 03:37:48,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31961 conditions, 5550 events. 3820/5550 cut-off events. For 78233/78240 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 28035 event pairs, 737 based on Foata normal form. 16/5563 useless extension candidates. Maximal degree in co-relation 31910. Up to 3978 conditions per place. [2024-06-28 03:37:48,940 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 183 selfloop transitions, 91 changer transitions 0/277 dead transitions. [2024-06-28 03:37:48,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 277 transitions, 3383 flow [2024-06-28 03:37:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 03:37:48,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 03:37:48,942 INFO L175 Difference]: Start difference. First operand has 103 places, 140 transitions, 1347 flow. Second operand 8 states and 164 transitions. [2024-06-28 03:37:48,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 277 transitions, 3383 flow [2024-06-28 03:37:49,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 277 transitions, 3241 flow, removed 70 selfloop flow, removed 1 redundant places. [2024-06-28 03:37:49,028 INFO L231 Difference]: Finished difference. Result has 113 places, 200 transitions, 2313 flow [2024-06-28 03:37:49,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2313, PETRI_PLACES=113, PETRI_TRANSITIONS=200} [2024-06-28 03:37:49,029 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2024-06-28 03:37:49,029 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 200 transitions, 2313 flow [2024-06-28 03:37:49,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:49,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:49,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:49,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:37:49,030 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:49,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:49,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1497906549, now seen corresponding path program 3 times [2024-06-28 03:37:49,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:49,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719867430] [2024-06-28 03:37:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:49,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:49,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719867430] [2024-06-28 03:37:49,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719867430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:49,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:49,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:49,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898035990] [2024-06-28 03:37:49,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:49,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:49,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:49,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:49,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:49,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:49,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 200 transitions, 2313 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:49,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:49,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:49,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:50,563 INFO L124 PetriNetUnfolderBase]: 4040/5862 cut-off events. [2024-06-28 03:37:50,563 INFO L125 PetriNetUnfolderBase]: For 95957/95966 co-relation queries the response was YES. [2024-06-28 03:37:50,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37717 conditions, 5862 events. 4040/5862 cut-off events. For 95957/95966 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 29772 event pairs, 909 based on Foata normal form. 26/5885 useless extension candidates. Maximal degree in co-relation 37660. Up to 4116 conditions per place. [2024-06-28 03:37:50,602 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 191 selfloop transitions, 103 changer transitions 0/297 dead transitions. [2024-06-28 03:37:50,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 297 transitions, 3979 flow [2024-06-28 03:37:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 03:37:50,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 03:37:50,603 INFO L175 Difference]: Start difference. First operand has 113 places, 200 transitions, 2313 flow. Second operand 8 states and 165 transitions. [2024-06-28 03:37:50,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 297 transitions, 3979 flow [2024-06-28 03:37:50,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 297 transitions, 3921 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 03:37:50,743 INFO L231 Difference]: Finished difference. Result has 121 places, 226 transitions, 2930 flow [2024-06-28 03:37:50,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2930, PETRI_PLACES=121, PETRI_TRANSITIONS=226} [2024-06-28 03:37:50,744 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-06-28 03:37:50,744 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 226 transitions, 2930 flow [2024-06-28 03:37:50,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:50,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:50,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:50,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:37:50,745 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:50,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1558404529, now seen corresponding path program 4 times [2024-06-28 03:37:50,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:50,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368340526] [2024-06-28 03:37:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:50,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:51,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:51,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368340526] [2024-06-28 03:37:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368340526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:51,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:51,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:51,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296369749] [2024-06-28 03:37:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:51,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:51,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:51,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 226 transitions, 2930 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:51,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:51,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:51,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:52,207 INFO L124 PetriNetUnfolderBase]: 4006/5829 cut-off events. [2024-06-28 03:37:52,207 INFO L125 PetriNetUnfolderBase]: For 106303/106306 co-relation queries the response was YES. [2024-06-28 03:37:52,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39980 conditions, 5829 events. 4006/5829 cut-off events. For 106303/106306 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 29557 event pairs, 1300 based on Foata normal form. 22/5848 useless extension candidates. Maximal degree in co-relation 39919. Up to 4081 conditions per place. [2024-06-28 03:37:52,254 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 165 selfloop transitions, 115 changer transitions 0/283 dead transitions. [2024-06-28 03:37:52,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 283 transitions, 4051 flow [2024-06-28 03:37:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:37:52,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 03:37:52,257 INFO L175 Difference]: Start difference. First operand has 121 places, 226 transitions, 2930 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:37:52,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 283 transitions, 4051 flow [2024-06-28 03:37:52,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 283 transitions, 3846 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 03:37:52,498 INFO L231 Difference]: Finished difference. Result has 127 places, 238 transitions, 3301 flow [2024-06-28 03:37:52,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3301, PETRI_PLACES=127, PETRI_TRANSITIONS=238} [2024-06-28 03:37:52,499 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-06-28 03:37:52,499 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 238 transitions, 3301 flow [2024-06-28 03:37:52,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:52,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:52,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:52,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:37:52,499 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:52,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:52,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1673759688, now seen corresponding path program 1 times [2024-06-28 03:37:52,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:52,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934723442] [2024-06-28 03:37:52,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:52,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:53,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:53,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934723442] [2024-06-28 03:37:53,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934723442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:53,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:53,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:53,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676698204] [2024-06-28 03:37:53,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:53,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:53,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:53,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:53,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:53,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 238 transitions, 3301 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:53,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:53,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:53,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:54,348 INFO L124 PetriNetUnfolderBase]: 4036/5871 cut-off events. [2024-06-28 03:37:54,348 INFO L125 PetriNetUnfolderBase]: For 118624/118624 co-relation queries the response was YES. [2024-06-28 03:37:54,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41972 conditions, 5871 events. 4036/5871 cut-off events. For 118624/118624 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 29802 event pairs, 1429 based on Foata normal form. 7/5877 useless extension candidates. Maximal degree in co-relation 41908. Up to 5600 conditions per place. [2024-06-28 03:37:54,395 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 237 selfloop transitions, 34 changer transitions 0/274 dead transitions. [2024-06-28 03:37:54,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 274 transitions, 4061 flow [2024-06-28 03:37:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 03:37:54,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:37:54,396 INFO L175 Difference]: Start difference. First operand has 127 places, 238 transitions, 3301 flow. Second operand 7 states and 133 transitions. [2024-06-28 03:37:54,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 274 transitions, 4061 flow [2024-06-28 03:37:54,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 274 transitions, 3914 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:37:54,581 INFO L231 Difference]: Finished difference. Result has 129 places, 242 transitions, 3306 flow [2024-06-28 03:37:54,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3306, PETRI_PLACES=129, PETRI_TRANSITIONS=242} [2024-06-28 03:37:54,581 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-28 03:37:54,581 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 242 transitions, 3306 flow [2024-06-28 03:37:54,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:54,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:54,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:54,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:37:54,582 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:54,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:54,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1702502449, now seen corresponding path program 5 times [2024-06-28 03:37:54,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:54,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105863431] [2024-06-28 03:37:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:54,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:55,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:55,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105863431] [2024-06-28 03:37:55,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105863431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:55,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:55,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:55,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956269134] [2024-06-28 03:37:55,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:55,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:55,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:55,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:55,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:55,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:55,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 242 transitions, 3306 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:55,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:55,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:55,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:56,266 INFO L124 PetriNetUnfolderBase]: 4056/5901 cut-off events. [2024-06-28 03:37:56,266 INFO L125 PetriNetUnfolderBase]: For 124431/124440 co-relation queries the response was YES. [2024-06-28 03:37:56,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41782 conditions, 5901 events. 4056/5901 cut-off events. For 124431/124440 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 30068 event pairs, 1460 based on Foata normal form. 20/5919 useless extension candidates. Maximal degree in co-relation 41718. Up to 5680 conditions per place. [2024-06-28 03:37:56,305 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 248 selfloop transitions, 31 changer transitions 0/282 dead transitions. [2024-06-28 03:37:56,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 282 transitions, 4177 flow [2024-06-28 03:37:56,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:37:56,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-06-28 03:37:56,306 INFO L175 Difference]: Start difference. First operand has 129 places, 242 transitions, 3306 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:37:56,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 282 transitions, 4177 flow [2024-06-28 03:37:56,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 282 transitions, 4081 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 03:37:56,481 INFO L231 Difference]: Finished difference. Result has 131 places, 251 transitions, 3456 flow [2024-06-28 03:37:56,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3210, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3456, PETRI_PLACES=131, PETRI_TRANSITIONS=251} [2024-06-28 03:37:56,482 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-06-28 03:37:56,482 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 251 transitions, 3456 flow [2024-06-28 03:37:56,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:56,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:56,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:56,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:37:56,483 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:56,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:56,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1689210018, now seen corresponding path program 1 times [2024-06-28 03:37:56,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:56,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255158333] [2024-06-28 03:37:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:56,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:57,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:57,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255158333] [2024-06-28 03:37:57,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255158333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:57,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:57,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883425196] [2024-06-28 03:37:57,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:57,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:57,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:57,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:57,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:57,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:57,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 251 transitions, 3456 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:57,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:57,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:57,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:58,266 INFO L124 PetriNetUnfolderBase]: 4178/6097 cut-off events. [2024-06-28 03:37:58,266 INFO L125 PetriNetUnfolderBase]: For 133478/133491 co-relation queries the response was YES. [2024-06-28 03:37:58,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43272 conditions, 6097 events. 4178/6097 cut-off events. For 133478/133491 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 31318 event pairs, 1031 based on Foata normal form. 14/6109 useless extension candidates. Maximal degree in co-relation 43207. Up to 5729 conditions per place. [2024-06-28 03:37:58,313 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 254 selfloop transitions, 52 changer transitions 0/309 dead transitions. [2024-06-28 03:37:58,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 309 transitions, 4489 flow [2024-06-28 03:37:58,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:58,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:37:58,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 03:37:58,317 INFO L175 Difference]: Start difference. First operand has 131 places, 251 transitions, 3456 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:37:58,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 309 transitions, 4489 flow [2024-06-28 03:37:58,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 309 transitions, 4398 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 03:37:58,541 INFO L231 Difference]: Finished difference. Result has 138 places, 272 transitions, 3746 flow [2024-06-28 03:37:58,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3746, PETRI_PLACES=138, PETRI_TRANSITIONS=272} [2024-06-28 03:37:58,541 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-28 03:37:58,541 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 272 transitions, 3746 flow [2024-06-28 03:37:58,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:58,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:58,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:58,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:37:58,542 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:37:58,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:58,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1743788122, now seen corresponding path program 1 times [2024-06-28 03:37:58,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:58,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942465709] [2024-06-28 03:37:58,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:58,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:59,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:59,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:59,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942465709] [2024-06-28 03:37:59,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942465709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:59,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:59,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:59,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035233784] [2024-06-28 03:37:59,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:59,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:59,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:59,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:59,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:59,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:37:59,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 272 transitions, 3746 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:59,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:59,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:37:59,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:00,569 INFO L124 PetriNetUnfolderBase]: 4719/6849 cut-off events. [2024-06-28 03:38:00,569 INFO L125 PetriNetUnfolderBase]: For 162622/162633 co-relation queries the response was YES. [2024-06-28 03:38:00,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49363 conditions, 6849 events. 4719/6849 cut-off events. For 162622/162633 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 35760 event pairs, 947 based on Foata normal form. 20/6866 useless extension candidates. Maximal degree in co-relation 49294. Up to 4102 conditions per place. [2024-06-28 03:38:00,631 INFO L140 encePairwiseOnDemand]: 22/40 looper letters, 259 selfloop transitions, 145 changer transitions 0/407 dead transitions. [2024-06-28 03:38:00,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 407 transitions, 6064 flow [2024-06-28 03:38:00,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:38:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:38:00,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-28 03:38:00,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-06-28 03:38:00,633 INFO L175 Difference]: Start difference. First operand has 138 places, 272 transitions, 3746 flow. Second operand 11 states and 230 transitions. [2024-06-28 03:38:00,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 407 transitions, 6064 flow [2024-06-28 03:38:00,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 407 transitions, 5979 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-28 03:38:00,997 INFO L231 Difference]: Finished difference. Result has 154 places, 315 transitions, 4754 flow [2024-06-28 03:38:00,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3661, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4754, PETRI_PLACES=154, PETRI_TRANSITIONS=315} [2024-06-28 03:38:00,997 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-28 03:38:00,997 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 315 transitions, 4754 flow [2024-06-28 03:38:00,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:00,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:00,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:00,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:38:00,998 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:00,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:00,999 INFO L85 PathProgramCache]: Analyzing trace with hash 715998498, now seen corresponding path program 2 times [2024-06-28 03:38:00,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:00,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758958726] [2024-06-28 03:38:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:00,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:01,767 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 03:38:01,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:01,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758958726] [2024-06-28 03:38:01,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758958726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:01,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:01,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:01,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290900379] [2024-06-28 03:38:01,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:01,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:01,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:01,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:01,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:01,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:01,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 315 transitions, 4754 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:01,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:01,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:01,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:03,220 INFO L124 PetriNetUnfolderBase]: 4727/6864 cut-off events. [2024-06-28 03:38:03,220 INFO L125 PetriNetUnfolderBase]: For 188171/188188 co-relation queries the response was YES. [2024-06-28 03:38:03,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56513 conditions, 6864 events. 4727/6864 cut-off events. For 188171/188188 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 35716 event pairs, 1134 based on Foata normal form. 18/6880 useless extension candidates. Maximal degree in co-relation 56435. Up to 6555 conditions per place. [2024-06-28 03:38:03,279 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 289 selfloop transitions, 61 changer transitions 0/353 dead transitions. [2024-06-28 03:38:03,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 353 transitions, 5613 flow [2024-06-28 03:38:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:38:03,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:38:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 03:38:03,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-06-28 03:38:03,280 INFO L175 Difference]: Start difference. First operand has 154 places, 315 transitions, 4754 flow. Second operand 10 states and 173 transitions. [2024-06-28 03:38:03,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 353 transitions, 5613 flow [2024-06-28 03:38:03,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 353 transitions, 5521 flow, removed 45 selfloop flow, removed 1 redundant places. [2024-06-28 03:38:03,636 INFO L231 Difference]: Finished difference. Result has 163 places, 319 transitions, 4853 flow [2024-06-28 03:38:03,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4662, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4853, PETRI_PLACES=163, PETRI_TRANSITIONS=319} [2024-06-28 03:38:03,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-06-28 03:38:03,637 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 319 transitions, 4853 flow [2024-06-28 03:38:03,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:03,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:03,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:03,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:38:03,638 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:03,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1380389244, now seen corresponding path program 3 times [2024-06-28 03:38:03,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:03,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239624186] [2024-06-28 03:38:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:03,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:04,078 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 03:38:04,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239624186] [2024-06-28 03:38:04,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239624186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:04,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:04,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:04,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071740343] [2024-06-28 03:38:04,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:04,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:04,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:04,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:04,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:04,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:04,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 319 transitions, 4853 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:04,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:04,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:04,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:05,318 INFO L124 PetriNetUnfolderBase]: 4844/7063 cut-off events. [2024-06-28 03:38:05,319 INFO L125 PetriNetUnfolderBase]: For 202021/202051 co-relation queries the response was YES. [2024-06-28 03:38:05,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57944 conditions, 7063 events. 4844/7063 cut-off events. For 202021/202051 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 37214 event pairs, 1015 based on Foata normal form. 30/7091 useless extension candidates. Maximal degree in co-relation 57863. Up to 6436 conditions per place. [2024-06-28 03:38:05,385 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 288 selfloop transitions, 78 changer transitions 0/369 dead transitions. [2024-06-28 03:38:05,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 369 transitions, 6119 flow [2024-06-28 03:38:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:38:05,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:38:05,388 INFO L175 Difference]: Start difference. First operand has 163 places, 319 transitions, 4853 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:38:05,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 369 transitions, 6119 flow [2024-06-28 03:38:05,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 369 transitions, 5953 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:05,780 INFO L231 Difference]: Finished difference. Result has 167 places, 339 transitions, 5202 flow [2024-06-28 03:38:05,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4719, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5202, PETRI_PLACES=167, PETRI_TRANSITIONS=339} [2024-06-28 03:38:05,781 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-28 03:38:05,781 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 339 transitions, 5202 flow [2024-06-28 03:38:05,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:05,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:05,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:05,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:38:05,782 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:05,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:05,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1582409426, now seen corresponding path program 4 times [2024-06-28 03:38:05,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:05,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499665756] [2024-06-28 03:38:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:05,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:06,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:06,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499665756] [2024-06-28 03:38:06,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499665756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:06,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:06,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:06,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320752627] [2024-06-28 03:38:06,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:06,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:06,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:06,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:06,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:06,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:06,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 339 transitions, 5202 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:06,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:06,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:06,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:07,932 INFO L124 PetriNetUnfolderBase]: 5073/7426 cut-off events. [2024-06-28 03:38:07,932 INFO L125 PetriNetUnfolderBase]: For 223664/223691 co-relation queries the response was YES. [2024-06-28 03:38:07,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61494 conditions, 7426 events. 5073/7426 cut-off events. For 223664/223691 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 39892 event pairs, 1180 based on Foata normal form. 28/7452 useless extension candidates. Maximal degree in co-relation 61410. Up to 6875 conditions per place. [2024-06-28 03:38:08,010 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 314 selfloop transitions, 100 changer transitions 0/417 dead transitions. [2024-06-28 03:38:08,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 417 transitions, 6930 flow [2024-06-28 03:38:08,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:08,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:38:08,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:38:08,011 INFO L175 Difference]: Start difference. First operand has 167 places, 339 transitions, 5202 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:38:08,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 417 transitions, 6930 flow [2024-06-28 03:38:08,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 417 transitions, 6610 flow, removed 125 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:08,546 INFO L231 Difference]: Finished difference. Result has 175 places, 380 transitions, 5854 flow [2024-06-28 03:38:08,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5046, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5854, PETRI_PLACES=175, PETRI_TRANSITIONS=380} [2024-06-28 03:38:08,547 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-28 03:38:08,548 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 380 transitions, 5854 flow [2024-06-28 03:38:08,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:08,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:08,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:08,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:38:08,548 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:08,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:08,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1616669820, now seen corresponding path program 2 times [2024-06-28 03:38:08,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:08,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384806805] [2024-06-28 03:38:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:08,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:09,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384806805] [2024-06-28 03:38:09,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384806805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:09,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:09,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:09,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304895599] [2024-06-28 03:38:09,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:09,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:09,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:09,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:09,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:09,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:09,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 380 transitions, 5854 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:09,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:09,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:09,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:10,584 INFO L124 PetriNetUnfolderBase]: 5379/7849 cut-off events. [2024-06-28 03:38:10,585 INFO L125 PetriNetUnfolderBase]: For 246151/246176 co-relation queries the response was YES. [2024-06-28 03:38:10,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65210 conditions, 7849 events. 5379/7849 cut-off events. For 246151/246176 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 42610 event pairs, 694 based on Foata normal form. 26/7872 useless extension candidates. Maximal degree in co-relation 65122. Up to 6369 conditions per place. [2024-06-28 03:38:10,672 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 438 selfloop transitions, 122 changer transitions 0/563 dead transitions. [2024-06-28 03:38:10,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 563 transitions, 9702 flow [2024-06-28 03:38:10,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 03:38:10,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2024-06-28 03:38:10,675 INFO L175 Difference]: Start difference. First operand has 175 places, 380 transitions, 5854 flow. Second operand 9 states and 182 transitions. [2024-06-28 03:38:10,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 563 transitions, 9702 flow [2024-06-28 03:38:11,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 563 transitions, 9584 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:11,194 INFO L231 Difference]: Finished difference. Result has 185 places, 458 transitions, 7262 flow [2024-06-28 03:38:11,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5736, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7262, PETRI_PLACES=185, PETRI_TRANSITIONS=458} [2024-06-28 03:38:11,195 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2024-06-28 03:38:11,195 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 458 transitions, 7262 flow [2024-06-28 03:38:11,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:11,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:11,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:11,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:38:11,196 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:11,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1615537886, now seen corresponding path program 5 times [2024-06-28 03:38:11,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:11,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383496606] [2024-06-28 03:38:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:11,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:11,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:11,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383496606] [2024-06-28 03:38:11,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383496606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:11,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:11,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:11,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478789593] [2024-06-28 03:38:11,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:11,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:11,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:11,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:11,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:11,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 458 transitions, 7262 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:11,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:11,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:11,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:13,319 INFO L124 PetriNetUnfolderBase]: 5393/7894 cut-off events. [2024-06-28 03:38:13,320 INFO L125 PetriNetUnfolderBase]: For 267802/267819 co-relation queries the response was YES. [2024-06-28 03:38:13,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69881 conditions, 7894 events. 5393/7894 cut-off events. For 267802/267819 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 42698 event pairs, 1039 based on Foata normal form. 20/7912 useless extension candidates. Maximal degree in co-relation 69787. Up to 7452 conditions per place. [2024-06-28 03:38:13,413 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 400 selfloop transitions, 92 changer transitions 0/495 dead transitions. [2024-06-28 03:38:13,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 495 transitions, 8463 flow [2024-06-28 03:38:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:38:13,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 03:38:13,414 INFO L175 Difference]: Start difference. First operand has 185 places, 458 transitions, 7262 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:38:13,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 495 transitions, 8463 flow [2024-06-28 03:38:14,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 495 transitions, 8327 flow, removed 67 selfloop flow, removed 1 redundant places. [2024-06-28 03:38:14,203 INFO L231 Difference]: Finished difference. Result has 193 places, 464 transitions, 7437 flow [2024-06-28 03:38:14,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7134, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7437, PETRI_PLACES=193, PETRI_TRANSITIONS=464} [2024-06-28 03:38:14,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-28 03:38:14,204 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 464 transitions, 7437 flow [2024-06-28 03:38:14,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:14,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:14,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:14,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:38:14,205 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:14,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash -809540714, now seen corresponding path program 3 times [2024-06-28 03:38:14,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:14,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789267924] [2024-06-28 03:38:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:14,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:14,776 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 03:38:14,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:14,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789267924] [2024-06-28 03:38:14,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789267924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:14,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:14,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:14,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959189665] [2024-06-28 03:38:14,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:14,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:14,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:14,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:14,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:14,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:14,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 464 transitions, 7437 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:14,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:14,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:14,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:16,591 INFO L124 PetriNetUnfolderBase]: 5612/8191 cut-off events. [2024-06-28 03:38:16,592 INFO L125 PetriNetUnfolderBase]: For 288594/288603 co-relation queries the response was YES. [2024-06-28 03:38:16,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72436 conditions, 8191 events. 5612/8191 cut-off events. For 288594/288603 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 44760 event pairs, 817 based on Foata normal form. 16/8204 useless extension candidates. Maximal degree in co-relation 72339. Up to 6740 conditions per place. [2024-06-28 03:38:16,673 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 461 selfloop transitions, 170 changer transitions 0/634 dead transitions. [2024-06-28 03:38:16,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 634 transitions, 11449 flow [2024-06-28 03:38:16,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 03:38:16,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-28 03:38:16,675 INFO L175 Difference]: Start difference. First operand has 193 places, 464 transitions, 7437 flow. Second operand 9 states and 183 transitions. [2024-06-28 03:38:16,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 634 transitions, 11449 flow [2024-06-28 03:38:17,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 634 transitions, 11195 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:17,298 INFO L231 Difference]: Finished difference. Result has 200 places, 545 transitions, 9253 flow [2024-06-28 03:38:17,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7197, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9253, PETRI_PLACES=200, PETRI_TRANSITIONS=545} [2024-06-28 03:38:17,298 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-28 03:38:17,298 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 545 transitions, 9253 flow [2024-06-28 03:38:17,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:17,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:17,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:17,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:38:17,299 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:17,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:17,299 INFO L85 PathProgramCache]: Analyzing trace with hash 673598874, now seen corresponding path program 4 times [2024-06-28 03:38:17,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:17,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377033195] [2024-06-28 03:38:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:17,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:17,881 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 03:38:17,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:17,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377033195] [2024-06-28 03:38:17,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377033195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:17,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:17,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:17,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923211609] [2024-06-28 03:38:17,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:17,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:17,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:17,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:17,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:17,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 545 transitions, 9253 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:17,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:17,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:17,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:19,808 INFO L124 PetriNetUnfolderBase]: 5662/8262 cut-off events. [2024-06-28 03:38:19,808 INFO L125 PetriNetUnfolderBase]: For 314875/314884 co-relation queries the response was YES. [2024-06-28 03:38:19,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76549 conditions, 8262 events. 5662/8262 cut-off events. For 314875/314884 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 45176 event pairs, 833 based on Foata normal form. 14/8273 useless extension candidates. Maximal degree in co-relation 76447. Up to 7019 conditions per place. [2024-06-28 03:38:19,909 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 475 selfloop transitions, 157 changer transitions 0/635 dead transitions. [2024-06-28 03:38:19,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 635 transitions, 11868 flow [2024-06-28 03:38:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:19,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:38:19,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2024-06-28 03:38:19,911 INFO L175 Difference]: Start difference. First operand has 200 places, 545 transitions, 9253 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:38:19,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 635 transitions, 11868 flow [2024-06-28 03:38:20,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 635 transitions, 11757 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-28 03:38:20,712 INFO L231 Difference]: Finished difference. Result has 208 places, 557 transitions, 9762 flow [2024-06-28 03:38:20,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9148, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9762, PETRI_PLACES=208, PETRI_TRANSITIONS=557} [2024-06-28 03:38:20,712 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-28 03:38:20,712 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 557 transitions, 9762 flow [2024-06-28 03:38:20,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:20,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:20,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:20,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:38:20,713 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:20,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash 673771854, now seen corresponding path program 5 times [2024-06-28 03:38:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:20,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521446277] [2024-06-28 03:38:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:20,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:21,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521446277] [2024-06-28 03:38:21,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521446277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:21,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:21,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:21,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041502722] [2024-06-28 03:38:21,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:21,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:21,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:21,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:21,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:21,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 557 transitions, 9762 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:21,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:21,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:21,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:23,188 INFO L124 PetriNetUnfolderBase]: 5680/8288 cut-off events. [2024-06-28 03:38:23,188 INFO L125 PetriNetUnfolderBase]: For 334955/334970 co-relation queries the response was YES. [2024-06-28 03:38:23,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78176 conditions, 8288 events. 5680/8288 cut-off events. For 334955/334970 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 45199 event pairs, 819 based on Foata normal form. 20/8305 useless extension candidates. Maximal degree in co-relation 78071. Up to 7045 conditions per place. [2024-06-28 03:38:23,291 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 481 selfloop transitions, 157 changer transitions 0/641 dead transitions. [2024-06-28 03:38:23,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 641 transitions, 12264 flow [2024-06-28 03:38:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:38:23,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 03:38:23,293 INFO L175 Difference]: Start difference. First operand has 208 places, 557 transitions, 9762 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:38:23,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 641 transitions, 12264 flow [2024-06-28 03:38:24,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 641 transitions, 11902 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:24,276 INFO L231 Difference]: Finished difference. Result has 212 places, 574 transitions, 10162 flow [2024-06-28 03:38:24,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9408, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10162, PETRI_PLACES=212, PETRI_TRANSITIONS=574} [2024-06-28 03:38:24,277 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-28 03:38:24,277 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 574 transitions, 10162 flow [2024-06-28 03:38:24,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:24,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:24,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:24,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:38:24,277 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:24,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:24,278 INFO L85 PathProgramCache]: Analyzing trace with hash 673778798, now seen corresponding path program 1 times [2024-06-28 03:38:24,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:24,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801556253] [2024-06-28 03:38:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:24,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:25,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:25,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801556253] [2024-06-28 03:38:25,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801556253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:25,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:25,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:25,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267920770] [2024-06-28 03:38:25,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:25,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:25,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:25,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:25,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:25,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 574 transitions, 10162 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:38:25,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:25,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:25,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:27,253 INFO L124 PetriNetUnfolderBase]: 6024/8808 cut-off events. [2024-06-28 03:38:27,253 INFO L125 PetriNetUnfolderBase]: For 376572/376587 co-relation queries the response was YES. [2024-06-28 03:38:27,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82873 conditions, 8808 events. 6024/8808 cut-off events. For 376572/376587 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 48496 event pairs, 1075 based on Foata normal form. 50/8855 useless extension candidates. Maximal degree in co-relation 82766. Up to 6198 conditions per place. [2024-06-28 03:38:27,365 INFO L140 encePairwiseOnDemand]: 23/40 looper letters, 473 selfloop transitions, 222 changer transitions 0/698 dead transitions. [2024-06-28 03:38:27,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 698 transitions, 13208 flow [2024-06-28 03:38:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:27,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:27,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 03:38:27,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 03:38:27,366 INFO L175 Difference]: Start difference. First operand has 212 places, 574 transitions, 10162 flow. Second operand 9 states and 189 transitions. [2024-06-28 03:38:27,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 698 transitions, 13208 flow [2024-06-28 03:38:28,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 698 transitions, 12957 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:28,150 INFO L231 Difference]: Finished difference. Result has 219 places, 616 transitions, 11207 flow [2024-06-28 03:38:28,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9921, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11207, PETRI_PLACES=219, PETRI_TRANSITIONS=616} [2024-06-28 03:38:28,151 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 178 predicate places. [2024-06-28 03:38:28,151 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 616 transitions, 11207 flow [2024-06-28 03:38:28,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:38:28,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:28,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:28,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:38:28,151 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:28,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:28,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1386999242, now seen corresponding path program 1 times [2024-06-28 03:38:28,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:28,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980171153] [2024-06-28 03:38:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:28,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:28,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:28,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980171153] [2024-06-28 03:38:28,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980171153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:28,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:28,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:28,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674412607] [2024-06-28 03:38:28,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:28,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:28,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:28,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:28,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:28,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:28,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 616 transitions, 11207 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:38:28,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:28,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:28,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:30,444 INFO L124 PetriNetUnfolderBase]: 6006/8783 cut-off events. [2024-06-28 03:38:30,444 INFO L125 PetriNetUnfolderBase]: For 384597/384599 co-relation queries the response was YES. [2024-06-28 03:38:30,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85832 conditions, 8783 events. 6006/8783 cut-off events. For 384597/384599 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 48251 event pairs, 1481 based on Foata normal form. 8/8790 useless extension candidates. Maximal degree in co-relation 85722. Up to 8648 conditions per place. [2024-06-28 03:38:30,536 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 613 selfloop transitions, 27 changer transitions 0/643 dead transitions. [2024-06-28 03:38:30,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 643 transitions, 12795 flow [2024-06-28 03:38:30,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 03:38:30,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-06-28 03:38:30,538 INFO L175 Difference]: Start difference. First operand has 219 places, 616 transitions, 11207 flow. Second operand 7 states and 121 transitions. [2024-06-28 03:38:30,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 643 transitions, 12795 flow [2024-06-28 03:38:31,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 643 transitions, 12647 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:31,480 INFO L231 Difference]: Finished difference. Result has 224 places, 623 transitions, 11300 flow [2024-06-28 03:38:31,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11060, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11300, PETRI_PLACES=224, PETRI_TRANSITIONS=623} [2024-06-28 03:38:31,481 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-28 03:38:31,481 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 623 transitions, 11300 flow [2024-06-28 03:38:31,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:38:31,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:31,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:31,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:38:31,481 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:31,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash 947748412, now seen corresponding path program 6 times [2024-06-28 03:38:31,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:31,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896971075] [2024-06-28 03:38:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:31,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896971075] [2024-06-28 03:38:32,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896971075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:32,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:32,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475011027] [2024-06-28 03:38:32,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:32,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:32,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:32,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:32,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 623 transitions, 11300 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:32,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:32,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:32,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:34,060 INFO L124 PetriNetUnfolderBase]: 6034/8837 cut-off events. [2024-06-28 03:38:34,060 INFO L125 PetriNetUnfolderBase]: For 399527/399562 co-relation queries the response was YES. [2024-06-28 03:38:34,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85905 conditions, 8837 events. 6034/8837 cut-off events. For 399527/399562 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 48774 event pairs, 994 based on Foata normal form. 36/8871 useless extension candidates. Maximal degree in co-relation 85792. Up to 7917 conditions per place. [2024-06-28 03:38:34,162 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 510 selfloop transitions, 145 changer transitions 0/658 dead transitions. [2024-06-28 03:38:34,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 658 transitions, 12974 flow [2024-06-28 03:38:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:38:34,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:38:34,164 INFO L175 Difference]: Start difference. First operand has 224 places, 623 transitions, 11300 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:38:34,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 658 transitions, 12974 flow [2024-06-28 03:38:35,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 658 transitions, 12871 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:35,112 INFO L231 Difference]: Finished difference. Result has 229 places, 627 transitions, 11618 flow [2024-06-28 03:38:35,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11197, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11618, PETRI_PLACES=229, PETRI_TRANSITIONS=627} [2024-06-28 03:38:35,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-28 03:38:35,113 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 627 transitions, 11618 flow [2024-06-28 03:38:35,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:35,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:35,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:35,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:38:35,114 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:35,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash 947808862, now seen corresponding path program 7 times [2024-06-28 03:38:35,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:35,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219130083] [2024-06-28 03:38:35,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:35,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:35,822 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 03:38:35,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:35,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219130083] [2024-06-28 03:38:35,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219130083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:35,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:35,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:35,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225582188] [2024-06-28 03:38:35,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:35,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:35,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:35,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:35,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 627 transitions, 11618 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:35,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:35,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:35,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:37,868 INFO L124 PetriNetUnfolderBase]: 6011/8815 cut-off events. [2024-06-28 03:38:37,868 INFO L125 PetriNetUnfolderBase]: For 409071/409092 co-relation queries the response was YES. [2024-06-28 03:38:37,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86349 conditions, 8815 events. 6011/8815 cut-off events. For 409071/409092 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 48694 event pairs, 1220 based on Foata normal form. 28/8841 useless extension candidates. Maximal degree in co-relation 86235. Up to 8247 conditions per place. [2024-06-28 03:38:37,971 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 535 selfloop transitions, 122 changer transitions 0/660 dead transitions. [2024-06-28 03:38:37,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 660 transitions, 13102 flow [2024-06-28 03:38:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:38:37,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 03:38:37,972 INFO L175 Difference]: Start difference. First operand has 229 places, 627 transitions, 11618 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:38:37,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 660 transitions, 13102 flow [2024-06-28 03:38:39,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 660 transitions, 12690 flow, removed 93 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:39,136 INFO L231 Difference]: Finished difference. Result has 231 places, 627 transitions, 11485 flow [2024-06-28 03:38:39,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11206, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11485, PETRI_PLACES=231, PETRI_TRANSITIONS=627} [2024-06-28 03:38:39,136 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-28 03:38:39,136 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 627 transitions, 11485 flow [2024-06-28 03:38:39,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:39,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:39,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:39,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:38:39,137 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:39,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:39,137 INFO L85 PathProgramCache]: Analyzing trace with hash 947808986, now seen corresponding path program 6 times [2024-06-28 03:38:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:39,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921435868] [2024-06-28 03:38:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:39,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:39,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921435868] [2024-06-28 03:38:39,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921435868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:39,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:39,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596021110] [2024-06-28 03:38:39,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:39,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:39,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:39,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:39,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:39,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:39,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 627 transitions, 11485 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:39,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:39,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:39,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:42,041 INFO L124 PetriNetUnfolderBase]: 6409/9363 cut-off events. [2024-06-28 03:38:42,041 INFO L125 PetriNetUnfolderBase]: For 411323/411348 co-relation queries the response was YES. [2024-06-28 03:38:42,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90056 conditions, 9363 events. 6409/9363 cut-off events. For 411323/411348 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 51934 event pairs, 1085 based on Foata normal form. 44/9404 useless extension candidates. Maximal degree in co-relation 89943. Up to 5040 conditions per place. [2024-06-28 03:38:42,150 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 336 selfloop transitions, 408 changer transitions 0/747 dead transitions. [2024-06-28 03:38:42,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 747 transitions, 14649 flow [2024-06-28 03:38:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:38:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:38:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-28 03:38:42,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225 [2024-06-28 03:38:42,152 INFO L175 Difference]: Start difference. First operand has 231 places, 627 transitions, 11485 flow. Second operand 10 states and 209 transitions. [2024-06-28 03:38:42,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 747 transitions, 14649 flow [2024-06-28 03:38:43,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 747 transitions, 14353 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:43,121 INFO L231 Difference]: Finished difference. Result has 236 places, 669 transitions, 12912 flow [2024-06-28 03:38:43,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11213, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12912, PETRI_PLACES=236, PETRI_TRANSITIONS=669} [2024-06-28 03:38:43,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-28 03:38:43,122 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 669 transitions, 12912 flow [2024-06-28 03:38:43,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:43,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:43,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:43,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:38:43,122 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:43,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1065896666, now seen corresponding path program 7 times [2024-06-28 03:38:43,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:43,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009668263] [2024-06-28 03:38:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:43,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:43,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:43,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009668263] [2024-06-28 03:38:43,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009668263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:43,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:43,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:43,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837334944] [2024-06-28 03:38:43,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:43,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:43,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:43,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:43,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:43,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 669 transitions, 12912 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:43,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:43,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:43,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:46,097 INFO L124 PetriNetUnfolderBase]: 6501/9488 cut-off events. [2024-06-28 03:38:46,097 INFO L125 PetriNetUnfolderBase]: For 427067/427086 co-relation queries the response was YES. [2024-06-28 03:38:46,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95418 conditions, 9488 events. 6501/9488 cut-off events. For 427067/427086 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 52949 event pairs, 1005 based on Foata normal form. 30/9515 useless extension candidates. Maximal degree in co-relation 95302. Up to 7401 conditions per place. [2024-06-28 03:38:46,226 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 472 selfloop transitions, 299 changer transitions 0/774 dead transitions. [2024-06-28 03:38:46,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 774 transitions, 16265 flow [2024-06-28 03:38:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 03:38:46,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027777777777778 [2024-06-28 03:38:46,228 INFO L175 Difference]: Start difference. First operand has 236 places, 669 transitions, 12912 flow. Second operand 9 states and 181 transitions. [2024-06-28 03:38:46,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 774 transitions, 16265 flow [2024-06-28 03:38:47,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 774 transitions, 15739 flow, removed 98 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:47,570 INFO L231 Difference]: Finished difference. Result has 243 places, 716 transitions, 14322 flow [2024-06-28 03:38:47,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12439, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14322, PETRI_PLACES=243, PETRI_TRANSITIONS=716} [2024-06-28 03:38:47,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-28 03:38:47,571 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 716 transitions, 14322 flow [2024-06-28 03:38:47,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:47,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:47,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:47,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:38:47,571 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:47,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:47,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1066074296, now seen corresponding path program 8 times [2024-06-28 03:38:47,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:47,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815622520] [2024-06-28 03:38:47,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:47,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:48,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:48,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815622520] [2024-06-28 03:38:48,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815622520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:48,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:48,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:48,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592921935] [2024-06-28 03:38:48,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:48,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:48,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:48,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:48,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:48,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:48,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 716 transitions, 14322 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:48,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:48,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:48,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:50,520 INFO L124 PetriNetUnfolderBase]: 6635/9691 cut-off events. [2024-06-28 03:38:50,521 INFO L125 PetriNetUnfolderBase]: For 431907/431922 co-relation queries the response was YES. [2024-06-28 03:38:50,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100108 conditions, 9691 events. 6635/9691 cut-off events. For 431907/431922 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 54084 event pairs, 1147 based on Foata normal form. 34/9722 useless extension candidates. Maximal degree in co-relation 99987. Up to 6798 conditions per place. [2024-06-28 03:38:50,644 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 497 selfloop transitions, 289 changer transitions 0/789 dead transitions. [2024-06-28 03:38:50,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 789 transitions, 16921 flow [2024-06-28 03:38:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 03:38:50,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496875 [2024-06-28 03:38:50,645 INFO L175 Difference]: Start difference. First operand has 243 places, 716 transitions, 14322 flow. Second operand 8 states and 159 transitions. [2024-06-28 03:38:50,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 789 transitions, 16921 flow [2024-06-28 03:38:51,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 789 transitions, 16702 flow, removed 95 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:51,948 INFO L231 Difference]: Finished difference. Result has 248 places, 736 transitions, 15173 flow [2024-06-28 03:38:51,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14129, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15173, PETRI_PLACES=248, PETRI_TRANSITIONS=736} [2024-06-28 03:38:51,951 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-28 03:38:51,951 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 736 transitions, 15173 flow [2024-06-28 03:38:51,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:51,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:51,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:51,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:38:51,951 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:51,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:51,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2133915068, now seen corresponding path program 2 times [2024-06-28 03:38:51,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:51,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412257858] [2024-06-28 03:38:51,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:51,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:52,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:52,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412257858] [2024-06-28 03:38:52,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412257858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:52,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:52,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:52,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628230949] [2024-06-28 03:38:52,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:52,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:52,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:52,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:52,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:52,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 736 transitions, 15173 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:38:52,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:52,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:52,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:55,291 INFO L124 PetriNetUnfolderBase]: 6811/9976 cut-off events. [2024-06-28 03:38:55,291 INFO L125 PetriNetUnfolderBase]: For 462906/462921 co-relation queries the response was YES. [2024-06-28 03:38:55,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103807 conditions, 9976 events. 6811/9976 cut-off events. For 462906/462921 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 56092 event pairs, 1231 based on Foata normal form. 50/10023 useless extension candidates. Maximal degree in co-relation 103685. Up to 6769 conditions per place. [2024-06-28 03:38:55,422 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 526 selfloop transitions, 269 changer transitions 0/798 dead transitions. [2024-06-28 03:38:55,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 798 transitions, 17619 flow [2024-06-28 03:38:55,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 03:38:55,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 03:38:55,423 INFO L175 Difference]: Start difference. First operand has 248 places, 736 transitions, 15173 flow. Second operand 8 states and 165 transitions. [2024-06-28 03:38:55,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 798 transitions, 17619 flow [2024-06-28 03:38:56,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 798 transitions, 17111 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:56,897 INFO L231 Difference]: Finished difference. Result has 251 places, 739 transitions, 15325 flow [2024-06-28 03:38:56,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14667, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15325, PETRI_PLACES=251, PETRI_TRANSITIONS=739} [2024-06-28 03:38:56,898 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-28 03:38:56,898 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 739 transitions, 15325 flow [2024-06-28 03:38:56,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:38:56,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:56,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:56,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:38:56,898 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:38:56,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:56,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1065901316, now seen corresponding path program 9 times [2024-06-28 03:38:56,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:56,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894320269] [2024-06-28 03:38:56,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:56,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:57,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:57,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894320269] [2024-06-28 03:38:57,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894320269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:57,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:57,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:57,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237093091] [2024-06-28 03:38:57,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:57,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:57,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:57,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:57,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:38:57,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 739 transitions, 15325 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:57,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:57,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:38:57,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:00,187 INFO L124 PetriNetUnfolderBase]: 6945/10159 cut-off events. [2024-06-28 03:39:00,188 INFO L125 PetriNetUnfolderBase]: For 478114/478123 co-relation queries the response was YES. [2024-06-28 03:39:00,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106124 conditions, 10159 events. 6945/10159 cut-off events. For 478114/478123 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 57094 event pairs, 1250 based on Foata normal form. 28/10184 useless extension candidates. Maximal degree in co-relation 106001. Up to 7254 conditions per place. [2024-06-28 03:39:00,328 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 499 selfloop transitions, 309 changer transitions 0/811 dead transitions. [2024-06-28 03:39:00,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 811 transitions, 17975 flow [2024-06-28 03:39:00,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:00,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 03:39:00,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 03:39:00,330 INFO L175 Difference]: Start difference. First operand has 251 places, 739 transitions, 15325 flow. Second operand 8 states and 164 transitions. [2024-06-28 03:39:00,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 811 transitions, 17975 flow [2024-06-28 03:39:01,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 811 transitions, 17446 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:01,693 INFO L231 Difference]: Finished difference. Result has 254 places, 758 transitions, 15878 flow [2024-06-28 03:39:01,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14796, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15878, PETRI_PLACES=254, PETRI_TRANSITIONS=758} [2024-06-28 03:39:01,694 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-28 03:39:01,694 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 758 transitions, 15878 flow [2024-06-28 03:39:01,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:01,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:01,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:01,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:39:01,694 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:01,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:01,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1774286734, now seen corresponding path program 2 times [2024-06-28 03:39:01,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:01,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389267172] [2024-06-28 03:39:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:01,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:02,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:02,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389267172] [2024-06-28 03:39:02,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389267172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:02,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:02,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:02,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42797860] [2024-06-28 03:39:02,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:02,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:02,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:02,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:02,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:02,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:39:02,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 758 transitions, 15878 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:02,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:02,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:39:02,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:04,686 INFO L124 PetriNetUnfolderBase]: 6960/10184 cut-off events. [2024-06-28 03:39:04,686 INFO L125 PetriNetUnfolderBase]: For 492282/492282 co-relation queries the response was YES. [2024-06-28 03:39:04,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106857 conditions, 10184 events. 6960/10184 cut-off events. For 492282/492282 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 57249 event pairs, 1838 based on Foata normal form. 3/10186 useless extension candidates. Maximal degree in co-relation 106733. Up to 10033 conditions per place. [2024-06-28 03:39:04,842 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 750 selfloop transitions, 29 changer transitions 0/782 dead transitions. [2024-06-28 03:39:04,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 782 transitions, 17749 flow [2024-06-28 03:39:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 03:39:04,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-28 03:39:04,843 INFO L175 Difference]: Start difference. First operand has 254 places, 758 transitions, 15878 flow. Second operand 7 states and 114 transitions. [2024-06-28 03:39:04,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 782 transitions, 17749 flow [2024-06-28 03:39:06,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 782 transitions, 17190 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:06,702 INFO L231 Difference]: Finished difference. Result has 257 places, 766 transitions, 15557 flow [2024-06-28 03:39:06,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15323, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=734, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15557, PETRI_PLACES=257, PETRI_TRANSITIONS=766} [2024-06-28 03:39:06,703 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-28 03:39:06,703 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 766 transitions, 15557 flow [2024-06-28 03:39:06,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:06,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:06,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:06,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:39:06,704 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:06,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:06,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1502869920, now seen corresponding path program 3 times [2024-06-28 03:39:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:06,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883668778] [2024-06-28 03:39:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:07,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:07,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883668778] [2024-06-28 03:39:07,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883668778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:07,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:07,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:07,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792901248] [2024-06-28 03:39:07,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:07,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:07,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:07,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:07,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:39:07,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 766 transitions, 15557 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:39:07,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:07,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:39:07,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:10,401 INFO L124 PetriNetUnfolderBase]: 7048/10323 cut-off events. [2024-06-28 03:39:10,401 INFO L125 PetriNetUnfolderBase]: For 504453/504453 co-relation queries the response was YES. [2024-06-28 03:39:10,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106436 conditions, 10323 events. 7048/10323 cut-off events. For 504453/504453 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 58205 event pairs, 1839 based on Foata normal form. 18/10340 useless extension candidates. Maximal degree in co-relation 106310. Up to 10019 conditions per place. [2024-06-28 03:39:10,558 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 773 selfloop transitions, 29 changer transitions 0/805 dead transitions. [2024-06-28 03:39:10,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 805 transitions, 17604 flow [2024-06-28 03:39:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:39:10,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-28 03:39:10,560 INFO L175 Difference]: Start difference. First operand has 257 places, 766 transitions, 15557 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:39:10,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 805 transitions, 17604 flow [2024-06-28 03:39:12,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 805 transitions, 17326 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:12,026 INFO L231 Difference]: Finished difference. Result has 259 places, 768 transitions, 15436 flow [2024-06-28 03:39:12,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15279, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15436, PETRI_PLACES=259, PETRI_TRANSITIONS=768} [2024-06-28 03:39:12,027 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2024-06-28 03:39:12,028 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 768 transitions, 15436 flow [2024-06-28 03:39:12,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:39:12,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:12,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:12,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:39:12,028 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:12,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:12,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1274968770, now seen corresponding path program 4 times [2024-06-28 03:39:12,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:12,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055297737] [2024-06-28 03:39:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:12,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:12,865 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 03:39:12,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:12,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055297737] [2024-06-28 03:39:12,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055297737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:12,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:12,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:12,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428060095] [2024-06-28 03:39:12,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:12,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:12,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:12,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:12,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:12,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:39:12,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 768 transitions, 15436 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:39:12,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:12,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:39:12,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:15,663 INFO L124 PetriNetUnfolderBase]: 7136/10463 cut-off events. [2024-06-28 03:39:15,664 INFO L125 PetriNetUnfolderBase]: For 521730/521730 co-relation queries the response was YES. [2024-06-28 03:39:15,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108157 conditions, 10463 events. 7136/10463 cut-off events. For 521730/521730 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 59162 event pairs, 1823 based on Foata normal form. 18/10480 useless extension candidates. Maximal degree in co-relation 108031. Up to 9885 conditions per place. [2024-06-28 03:39:15,806 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 758 selfloop transitions, 60 changer transitions 0/821 dead transitions. [2024-06-28 03:39:15,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 821 transitions, 17804 flow [2024-06-28 03:39:15,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:15,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:39:15,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 03:39:15,807 INFO L175 Difference]: Start difference. First operand has 259 places, 768 transitions, 15436 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:39:15,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 821 transitions, 17804 flow [2024-06-28 03:39:17,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 821 transitions, 17681 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:17,422 INFO L231 Difference]: Finished difference. Result has 261 places, 770 transitions, 15539 flow [2024-06-28 03:39:17,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15313, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15539, PETRI_PLACES=261, PETRI_TRANSITIONS=770} [2024-06-28 03:39:17,423 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-28 03:39:17,424 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 770 transitions, 15539 flow [2024-06-28 03:39:17,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:39:17,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:17,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:17,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:39:17,425 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:17,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:17,426 INFO L85 PathProgramCache]: Analyzing trace with hash -273044768, now seen corresponding path program 1 times [2024-06-28 03:39:17,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:17,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107352539] [2024-06-28 03:39:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:17,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:18,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107352539] [2024-06-28 03:39:18,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107352539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:18,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:18,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:18,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162488017] [2024-06-28 03:39:18,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:18,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:18,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:18,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:18,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:18,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:39:18,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 770 transitions, 15539 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:18,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:18,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:39:18,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:21,175 INFO L124 PetriNetUnfolderBase]: 7167/10510 cut-off events. [2024-06-28 03:39:21,175 INFO L125 PetriNetUnfolderBase]: For 531219/531228 co-relation queries the response was YES. [2024-06-28 03:39:21,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108538 conditions, 10510 events. 7167/10510 cut-off events. For 531219/531228 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 59510 event pairs, 1835 based on Foata normal form. 16/10524 useless extension candidates. Maximal degree in co-relation 108411. Up to 10019 conditions per place. [2024-06-28 03:39:21,317 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 755 selfloop transitions, 74 changer transitions 0/832 dead transitions. [2024-06-28 03:39:21,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 832 transitions, 17985 flow [2024-06-28 03:39:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:39:21,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 03:39:21,491 INFO L175 Difference]: Start difference. First operand has 261 places, 770 transitions, 15539 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:39:21,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 832 transitions, 17985 flow [2024-06-28 03:39:22,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 832 transitions, 17799 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:22,935 INFO L231 Difference]: Finished difference. Result has 262 places, 783 transitions, 15826 flow [2024-06-28 03:39:22,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15353, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15826, PETRI_PLACES=262, PETRI_TRANSITIONS=783} [2024-06-28 03:39:22,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-28 03:39:22,935 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 783 transitions, 15826 flow [2024-06-28 03:39:22,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:22,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:22,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:22,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:39:22,936 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:22,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:22,937 INFO L85 PathProgramCache]: Analyzing trace with hash -355222540, now seen corresponding path program 10 times [2024-06-28 03:39:22,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:22,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659069524] [2024-06-28 03:39:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:22,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:23,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659069524] [2024-06-28 03:39:23,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659069524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:23,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:23,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:23,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325572005] [2024-06-28 03:39:23,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:23,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:23,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:23,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:23,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:23,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:39:23,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 783 transitions, 15826 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:23,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:23,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:39:23,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:26,431 INFO L124 PetriNetUnfolderBase]: 7181/10529 cut-off events. [2024-06-28 03:39:26,431 INFO L125 PetriNetUnfolderBase]: For 538751/538760 co-relation queries the response was YES. [2024-06-28 03:39:26,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108541 conditions, 10529 events. 7181/10529 cut-off events. For 538751/538760 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 59610 event pairs, 1836 based on Foata normal form. 22/10549 useless extension candidates. Maximal degree in co-relation 108413. Up to 10145 conditions per place. [2024-06-28 03:39:26,687 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 781 selfloop transitions, 57 changer transitions 0/841 dead transitions. [2024-06-28 03:39:26,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 841 transitions, 18341 flow [2024-06-28 03:39:26,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:39:26,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 03:39:26,697 INFO L175 Difference]: Start difference. First operand has 262 places, 783 transitions, 15826 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:39:26,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 841 transitions, 18341 flow [2024-06-28 03:39:28,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 841 transitions, 18141 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:28,143 INFO L231 Difference]: Finished difference. Result has 265 places, 800 transitions, 16213 flow [2024-06-28 03:39:28,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15626, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16213, PETRI_PLACES=265, PETRI_TRANSITIONS=800} [2024-06-28 03:39:28,144 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-28 03:39:28,144 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 800 transitions, 16213 flow [2024-06-28 03:39:28,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:28,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:28,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:28,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:39:28,145 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:28,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:28,145 INFO L85 PathProgramCache]: Analyzing trace with hash -346644716, now seen corresponding path program 5 times [2024-06-28 03:39:28,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:28,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978970922] [2024-06-28 03:39:28,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:28,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:28,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:28,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978970922] [2024-06-28 03:39:28,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978970922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:28,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:28,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:28,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573830395] [2024-06-28 03:39:28,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:28,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:28,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:28,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:28,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:29,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:39:29,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 800 transitions, 16213 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:39:29,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:29,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:39:29,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:32,223 INFO L124 PetriNetUnfolderBase]: 7318/10748 cut-off events. [2024-06-28 03:39:32,224 INFO L125 PetriNetUnfolderBase]: For 566341/566341 co-relation queries the response was YES. [2024-06-28 03:39:32,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110633 conditions, 10748 events. 7318/10748 cut-off events. For 566341/566341 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 61319 event pairs, 1847 based on Foata normal form. 18/10765 useless extension candidates. Maximal degree in co-relation 110504. Up to 10296 conditions per place. [2024-06-28 03:39:32,358 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 807 selfloop transitions, 38 changer transitions 0/848 dead transitions. [2024-06-28 03:39:32,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 848 transitions, 18428 flow [2024-06-28 03:39:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:32,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:39:32,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 03:39:32,363 INFO L175 Difference]: Start difference. First operand has 265 places, 800 transitions, 16213 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:39:32,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 848 transitions, 18428 flow [2024-06-28 03:39:34,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 848 transitions, 18159 flow, removed 90 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:34,046 INFO L231 Difference]: Finished difference. Result has 268 places, 806 transitions, 16193 flow [2024-06-28 03:39:34,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15944, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=762, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16193, PETRI_PLACES=268, PETRI_TRANSITIONS=806} [2024-06-28 03:39:34,047 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-28 03:39:34,047 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 806 transitions, 16193 flow [2024-06-28 03:39:34,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:39:34,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:34,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:34,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:39:34,048 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:34,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:34,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1962293876, now seen corresponding path program 6 times [2024-06-28 03:39:34,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:34,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841828510] [2024-06-28 03:39:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:34,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:34,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:34,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841828510] [2024-06-28 03:39:34,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841828510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:34,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:34,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:34,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624130221] [2024-06-28 03:39:34,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:34,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:34,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:34,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:34,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:35,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:39:35,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 806 transitions, 16193 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:39:35,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:35,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:39:35,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:38,422 INFO L124 PetriNetUnfolderBase]: 7384/10854 cut-off events. [2024-06-28 03:39:38,423 INFO L125 PetriNetUnfolderBase]: For 584230/584230 co-relation queries the response was YES. [2024-06-28 03:39:38,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112409 conditions, 10854 events. 7384/10854 cut-off events. For 584230/584230 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 62066 event pairs, 1885 based on Foata normal form. 16/10869 useless extension candidates. Maximal degree in co-relation 112278. Up to 10413 conditions per place. [2024-06-28 03:39:38,567 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 804 selfloop transitions, 44 changer transitions 0/851 dead transitions. [2024-06-28 03:39:38,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 851 transitions, 18440 flow [2024-06-28 03:39:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:39:38,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 03:39:38,569 INFO L175 Difference]: Start difference. First operand has 268 places, 806 transitions, 16193 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:39:38,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 851 transitions, 18440 flow [2024-06-28 03:39:40,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 851 transitions, 18267 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:40,166 INFO L231 Difference]: Finished difference. Result has 272 places, 812 transitions, 16297 flow [2024-06-28 03:39:40,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16020, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16297, PETRI_PLACES=272, PETRI_TRANSITIONS=812} [2024-06-28 03:39:40,166 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 231 predicate places. [2024-06-28 03:39:40,167 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 812 transitions, 16297 flow [2024-06-28 03:39:40,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 03:39:40,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:40,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:40,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:39:40,167 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:40,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash -759902242, now seen corresponding path program 3 times [2024-06-28 03:39:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:40,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974365702] [2024-06-28 03:39:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:40,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:40,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:40,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974365702] [2024-06-28 03:39:40,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974365702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:40,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:40,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:40,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008839509] [2024-06-28 03:39:40,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:40,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:40,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:40,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:40,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:40,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:39:40,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 812 transitions, 16297 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:39:40,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:40,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:39:40,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:43,702 INFO L124 PetriNetUnfolderBase]: 7375/10840 cut-off events. [2024-06-28 03:39:43,703 INFO L125 PetriNetUnfolderBase]: For 582151/582151 co-relation queries the response was YES. [2024-06-28 03:39:43,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112228 conditions, 10840 events. 7375/10840 cut-off events. For 582151/582151 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 61967 event pairs, 1907 based on Foata normal form. 3/10842 useless extension candidates. Maximal degree in co-relation 112095. Up to 10727 conditions per place. [2024-06-28 03:39:43,833 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 804 selfloop transitions, 15 changer transitions 0/822 dead transitions. [2024-06-28 03:39:43,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 822 transitions, 17997 flow [2024-06-28 03:39:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-28 03:39:43,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:39:43,834 INFO L175 Difference]: Start difference. First operand has 272 places, 812 transitions, 16297 flow. Second operand 7 states and 105 transitions. [2024-06-28 03:39:43,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 822 transitions, 17997 flow [2024-06-28 03:39:45,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 822 transitions, 17850 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:45,178 INFO L231 Difference]: Finished difference. Result has 276 places, 812 transitions, 16188 flow [2024-06-28 03:39:45,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16150, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=797, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16188, PETRI_PLACES=276, PETRI_TRANSITIONS=812} [2024-06-28 03:39:45,179 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-28 03:39:45,179 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 812 transitions, 16188 flow [2024-06-28 03:39:45,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:39:45,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:45,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:45,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:39:45,179 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:45,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1780006606, now seen corresponding path program 1 times [2024-06-28 03:39:45,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:45,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108140623] [2024-06-28 03:39:45,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:45,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:45,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:45,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108140623] [2024-06-28 03:39:45,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108140623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:45,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:45,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979991281] [2024-06-28 03:39:45,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:45,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:45,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:45,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:45,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:45,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:39:45,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 812 transitions, 16188 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:39:45,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:45,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:39:45,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:48,764 INFO L124 PetriNetUnfolderBase]: 7372/10837 cut-off events. [2024-06-28 03:39:48,764 INFO L125 PetriNetUnfolderBase]: For 569453/569453 co-relation queries the response was YES. [2024-06-28 03:39:48,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110940 conditions, 10837 events. 7372/10837 cut-off events. For 569453/569453 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 61937 event pairs, 1904 based on Foata normal form. 9/10845 useless extension candidates. Maximal degree in co-relation 110806. Up to 10607 conditions per place. [2024-06-28 03:39:48,942 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 800 selfloop transitions, 35 changer transitions 0/838 dead transitions. [2024-06-28 03:39:48,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 838 transitions, 18183 flow [2024-06-28 03:39:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 03:39:48,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 03:39:48,944 INFO L175 Difference]: Start difference. First operand has 276 places, 812 transitions, 16188 flow. Second operand 6 states and 110 transitions. [2024-06-28 03:39:48,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 838 transitions, 18183 flow [2024-06-28 03:39:50,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 838 transitions, 18134 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:50,649 INFO L231 Difference]: Finished difference. Result has 277 places, 818 transitions, 16331 flow [2024-06-28 03:39:50,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16139, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16331, PETRI_PLACES=277, PETRI_TRANSITIONS=818} [2024-06-28 03:39:50,650 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-28 03:39:50,650 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 818 transitions, 16331 flow [2024-06-28 03:39:50,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:39:50,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:50,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:50,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:39:50,651 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:39:50,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:50,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2136561360, now seen corresponding path program 2 times [2024-06-28 03:39:50,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:50,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193455594] [2024-06-28 03:39:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:50,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:51,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193455594] [2024-06-28 03:39:51,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193455594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:51,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:51,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:51,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815105528] [2024-06-28 03:39:51,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:51,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:51,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:51,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:51,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:51,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 03:39:51,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 818 transitions, 16331 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 03:39:51,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:51,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 03:39:51,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:54,139 INFO L124 PetriNetUnfolderBase]: 7201/10563 cut-off events. [2024-06-28 03:39:54,139 INFO L125 PetriNetUnfolderBase]: For 575737/575740 co-relation queries the response was YES. [2024-06-28 03:39:54,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109381 conditions, 10563 events. 7201/10563 cut-off events. For 575737/575740 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 59935 event pairs, 1883 based on Foata normal form. 3/10563 useless extension candidates. Maximal degree in co-relation 109247. Up to 10346 conditions per place. [2024-06-28 03:39:54,294 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 794 selfloop transitions, 37 changer transitions 0/834 dead transitions. [2024-06-28 03:39:54,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 834 transitions, 18112 flow [2024-06-28 03:39:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 03:39:54,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-28 03:39:54,295 INFO L175 Difference]: Start difference. First operand has 277 places, 818 transitions, 16331 flow. Second operand 6 states and 107 transitions. [2024-06-28 03:39:54,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 834 transitions, 18112 flow