./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix037_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix037_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix037_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix037_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 18:56:24,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:56:24,376 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:56:24,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:56:24,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:56:24,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:56:24,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:56:24,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:56:24,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:56:24,413 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:56:24,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:56:24,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:56:24,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:56:24,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:56:24,415 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:56:24,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:56:24,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:56:24,416 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:56:24,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:56:24,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:56:24,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:56:24,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:56:24,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:56:24,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:56:24,418 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:56:24,418 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:56:24,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:56:24,419 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:56:24,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:56:24,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:56:24,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:56:24,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:56:24,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:56:24,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:56:24,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:56:24,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:56:24,422 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:56:24,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:56:24,422 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:56:24,422 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:56:24,423 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:56:24,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:56:24,423 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:56:24,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:56:24,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:56:24,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:56:24,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:56:24,634 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:56:24,635 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:56:24,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix037_tso.oepc.yml/witness.yml [2024-06-21 18:56:24,776 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:56:24,777 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:56:24,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix037_tso.oepc.i [2024-06-21 18:56:25,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:56:26,068 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:56:26,069 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix037_tso.oepc.i [2024-06-21 18:56:26,082 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad419558c/fe9376e8bf1349309b53f0b2be38972d/FLAGc351af3e3 [2024-06-21 18:56:26,094 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad419558c/fe9376e8bf1349309b53f0b2be38972d [2024-06-21 18:56:26,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:56:26,095 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:56:26,097 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:56:26,097 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:56:26,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:56:26,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:56:24" (1/2) ... [2024-06-21 18:56:26,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2e539a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:56:26, skipping insertion in model container [2024-06-21 18:56:26,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:56:24" (1/2) ... [2024-06-21 18:56:26,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ee6f1fd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:56:26, skipping insertion in model container [2024-06-21 18:56:26,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:56:26" (2/2) ... [2024-06-21 18:56:26,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2e539a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26, skipping insertion in model container [2024-06-21 18:56:26,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:56:26" (2/2) ... [2024-06-21 18:56:26,105 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:56:26,136 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:56:26,140 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )b >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 18:56:26,141 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )b >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 18:56:26,141 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )b >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 18:56:26,141 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )b >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 18:56:26,141 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:56:26,141 INFO L106 edCorrectnessWitness]: ghost_update [L859-L859] multithreaded = 1; [2024-06-21 18:56:26,207 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:56:26,586 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:56:26,610 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 18:56:26,814 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:56:26,871 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:56:26,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26 WrapperNode [2024-06-21 18:56:26,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:56:26,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:56:26,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:56:26,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:56:26,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:26,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:26,952 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 159 [2024-06-21 18:56:26,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:56:26,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:56:26,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:56:26,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:56:26,964 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:26,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:26,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:27,010 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]. [2024-06-21 18:56:27,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:27,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:27,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:27,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:27,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:27,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:27,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:56:27,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:56:27,064 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:56:27,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:56:27,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (1/1) ... [2024-06-21 18:56:27,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:56:27,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:56:27,103 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) [2024-06-21 18:56:27,121 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 [2024-06-21 18:56:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:56:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:56:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 18:56:27,143 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 18:56:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 18:56:27,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 18:56:27,144 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 18:56:27,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 18:56:27,145 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 18:56:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 18:56:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:56:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:56:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:56:27,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:56:27,149 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 18:56:27,270 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:56:27,272 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:56:27,805 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:56:27,805 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:56:28,048 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:56:28,048 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 18:56:28,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:56:28 BoogieIcfgContainer [2024-06-21 18:56:28,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:56:28,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:56:28,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:56:28,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:56:28,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:56:24" (1/4) ... [2024-06-21 18:56:28,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f18a025 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:56:28, skipping insertion in model container [2024-06-21 18:56:28,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:56:26" (2/4) ... [2024-06-21 18:56:28,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f18a025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:56:28, skipping insertion in model container [2024-06-21 18:56:28,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:56:26" (3/4) ... [2024-06-21 18:56:28,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f18a025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:56:28, skipping insertion in model container [2024-06-21 18:56:28,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:56:28" (4/4) ... [2024-06-21 18:56:28,061 INFO L112 eAbstractionObserver]: Analyzing ICFG mix037_tso.oepc.i [2024-06-21 18:56:28,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:56:28,077 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 18:56:28,077 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:56:28,141 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 18:56:28,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 18:56:28,211 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-21 18:56:28,211 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:56:28,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 18:56:28,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 18:56:28,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-21 18:56:28,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:56:28,240 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;@14ce4f88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:56:28,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 18:56:28,246 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:56:28,247 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 18:56:28,247 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:56:28,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:28,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 18:56:28,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:56:28,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash 408940714, now seen corresponding path program 1 times [2024-06-21 18:56:28,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:28,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153598844] [2024-06-21 18:56:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:28,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:30,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:30,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153598844] [2024-06-21 18:56:30,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153598844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:30,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:30,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:56:30,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238359064] [2024-06-21 18:56:30,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:30,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:56:30,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:30,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:56:30,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:56:30,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:56:30,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:56:30,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:30,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:56:30,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:32,408 INFO L124 PetriNetUnfolderBase]: 9587/13793 cut-off events. [2024-06-21 18:56:32,409 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-21 18:56:32,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27201 conditions, 13793 events. 9587/13793 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 79782 event pairs, 7462 based on Foata normal form. 1/13452 useless extension candidates. Maximal degree in co-relation 27188. Up to 13017 conditions per place. [2024-06-21 18:56:32,511 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 43 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-21 18:56:32,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 231 flow [2024-06-21 18:56:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:56:32,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:56:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-21 18:56:32,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.610062893081761 [2024-06-21 18:56:32,526 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 97 transitions. [2024-06-21 18:56:32,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 231 flow [2024-06-21 18:56:32,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 18:56:32,535 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-21 18:56:32,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-21 18:56:32,540 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-21 18:56:32,540 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-21 18:56:32,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:56:32,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:32,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:32,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:56:32,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:56:32,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:32,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2144645067, now seen corresponding path program 1 times [2024-06-21 18:56:32,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:32,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992714716] [2024-06-21 18:56:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:32,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:33,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:33,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992714716] [2024-06-21 18:56:33,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992714716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:33,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:33,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:56:33,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248583842] [2024-06-21 18:56:33,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:33,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:56:33,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:33,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:56:33,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:56:33,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:56:33,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:56:33,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:33,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:56:33,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:36,068 INFO L124 PetriNetUnfolderBase]: 10972/15332 cut-off events. [2024-06-21 18:56:36,068 INFO L125 PetriNetUnfolderBase]: For 2791/2791 co-relation queries the response was YES. [2024-06-21 18:56:36,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34431 conditions, 15332 events. 10972/15332 cut-off events. For 2791/2791 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 84839 event pairs, 7834 based on Foata normal form. 4/15185 useless extension candidates. Maximal degree in co-relation 34419. Up to 14827 conditions per place. [2024-06-21 18:56:36,172 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 54 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-21 18:56:36,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 325 flow [2024-06-21 18:56:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:56:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:56:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-21 18:56:36,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801886792452831 [2024-06-21 18:56:36,177 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 123 transitions. [2024-06-21 18:56:36,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 325 flow [2024-06-21 18:56:36,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:56:36,181 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-21 18:56:36,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-21 18:56:36,182 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-21 18:56:36,183 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-21 18:56:36,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:56:36,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:36,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:36,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:56:36,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:56:36,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:36,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2059486585, now seen corresponding path program 1 times [2024-06-21 18:56:36,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:36,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655765094] [2024-06-21 18:56:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:36,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:37,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:37,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655765094] [2024-06-21 18:56:37,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655765094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:37,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:37,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:56:37,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186812555] [2024-06-21 18:56:37,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:37,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:56:37,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:37,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:56:37,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:56:37,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:56:37,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-06-21 18:56:37,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:37,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:56:37,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:39,771 INFO L124 PetriNetUnfolderBase]: 10952/15310 cut-off events. [2024-06-21 18:56:39,771 INFO L125 PetriNetUnfolderBase]: For 7977/7977 co-relation queries the response was YES. [2024-06-21 18:56:39,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38189 conditions, 15310 events. 10952/15310 cut-off events. For 7977/7977 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 84969 event pairs, 6286 based on Foata normal form. 8/15167 useless extension candidates. Maximal degree in co-relation 38175. Up to 14757 conditions per place. [2024-06-21 18:56:39,870 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 65 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2024-06-21 18:56:39,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 437 flow [2024-06-21 18:56:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:56:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:56:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-06-21 18:56:39,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735849056603773 [2024-06-21 18:56:39,873 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 152 transitions. [2024-06-21 18:56:39,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 437 flow [2024-06-21 18:56:39,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 418 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 18:56:39,879 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 229 flow [2024-06-21 18:56:39,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-21 18:56:39,880 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-06-21 18:56:39,880 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 229 flow [2024-06-21 18:56:39,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-06-21 18:56:39,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:39,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:39,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:56:39,882 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:56:39,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:39,882 INFO L85 PathProgramCache]: Analyzing trace with hash 814539250, now seen corresponding path program 1 times [2024-06-21 18:56:39,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:39,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738678118] [2024-06-21 18:56:39,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:39,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:41,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:41,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738678118] [2024-06-21 18:56:41,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738678118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:41,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:41,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:56:41,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666845932] [2024-06-21 18:56:41,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:41,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:56:41,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:56:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:56:42,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:56:42,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 229 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:56:42,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:42,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:56:42,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:43,952 INFO L124 PetriNetUnfolderBase]: 10936/15288 cut-off events. [2024-06-21 18:56:43,952 INFO L125 PetriNetUnfolderBase]: For 15460/15460 co-relation queries the response was YES. [2024-06-21 18:56:44,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41906 conditions, 15288 events. 10936/15288 cut-off events. For 15460/15460 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 84662 event pairs, 5376 based on Foata normal form. 8/15145 useless extension candidates. Maximal degree in co-relation 41891. Up to 14691 conditions per place. [2024-06-21 18:56:44,090 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 72 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-21 18:56:44,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 521 flow [2024-06-21 18:56:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:56:44,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:56:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-06-21 18:56:44,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534591194968553 [2024-06-21 18:56:44,093 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 229 flow. Second operand 6 states and 176 transitions. [2024-06-21 18:56:44,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 521 flow [2024-06-21 18:56:44,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 96 transitions, 488 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 18:56:44,099 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 260 flow [2024-06-21 18:56:44,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-06-21 18:56:44,100 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-21 18:56:44,100 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 260 flow [2024-06-21 18:56:44,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:56:44,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:44,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:44,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:56:44,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:56:44,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:44,102 INFO L85 PathProgramCache]: Analyzing trace with hash 322722595, now seen corresponding path program 1 times [2024-06-21 18:56:44,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:44,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84608425] [2024-06-21 18:56:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:44,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:45,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:45,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84608425] [2024-06-21 18:56:45,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84608425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:45,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:45,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:56:45,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288296672] [2024-06-21 18:56:45,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:45,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:56:45,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:45,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:56:45,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:56:45,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:56:45,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:56:45,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:45,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:56:45,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:47,059 INFO L124 PetriNetUnfolderBase]: 9532/13736 cut-off events. [2024-06-21 18:56:47,059 INFO L125 PetriNetUnfolderBase]: For 22953/22953 co-relation queries the response was YES. [2024-06-21 18:56:47,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39998 conditions, 13736 events. 9532/13736 cut-off events. For 22953/22953 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 80281 event pairs, 6791 based on Foata normal form. 3/13571 useless extension candidates. Maximal degree in co-relation 39981. Up to 12924 conditions per place. [2024-06-21 18:56:47,158 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 59 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-21 18:56:47,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 480 flow [2024-06-21 18:56:47,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:56:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:56:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-21 18:56:47,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830188679245283 [2024-06-21 18:56:47,164 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 260 flow. Second operand 5 states and 128 transitions. [2024-06-21 18:56:47,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 480 flow [2024-06-21 18:56:47,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 432 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 18:56:47,174 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 296 flow [2024-06-21 18:56:47,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-06-21 18:56:47,178 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-21 18:56:47,178 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 296 flow [2024-06-21 18:56:47,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:56:47,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:47,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:47,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:56:47,179 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:56:47,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:47,180 INFO L85 PathProgramCache]: Analyzing trace with hash 537850374, now seen corresponding path program 1 times [2024-06-21 18:56:47,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:47,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729771403] [2024-06-21 18:56:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:47,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:48,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:48,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729771403] [2024-06-21 18:56:48,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729771403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:48,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:48,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:56:48,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319417039] [2024-06-21 18:56:48,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:48,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:56:48,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:48,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:56:48,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:56:48,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-21 18:56:48,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2024-06-21 18:56:48,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:48,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-21 18:56:48,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:50,417 INFO L124 PetriNetUnfolderBase]: 12367/16896 cut-off events. [2024-06-21 18:56:50,418 INFO L125 PetriNetUnfolderBase]: For 42871/42871 co-relation queries the response was YES. [2024-06-21 18:56:50,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54106 conditions, 16896 events. 12367/16896 cut-off events. For 42871/42871 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 91545 event pairs, 8479 based on Foata normal form. 3/16884 useless extension candidates. Maximal degree in co-relation 54086. Up to 16647 conditions per place. [2024-06-21 18:56:50,528 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 77 selfloop transitions, 22 changer transitions 0/105 dead transitions. [2024-06-21 18:56:50,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 636 flow [2024-06-21 18:56:50,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:56:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:56:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-21 18:56:50,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501347708894879 [2024-06-21 18:56:50,532 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 296 flow. Second operand 7 states and 167 transitions. [2024-06-21 18:56:50,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 636 flow [2024-06-21 18:56:50,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 603 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-21 18:56:50,542 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 399 flow [2024-06-21 18:56:50,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2024-06-21 18:56:50,545 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-21 18:56:50,545 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 399 flow [2024-06-21 18:56:50,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2024-06-21 18:56:50,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:50,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:50,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:56:50,546 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:56:50,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:50,546 INFO L85 PathProgramCache]: Analyzing trace with hash 893097794, now seen corresponding path program 2 times [2024-06-21 18:56:50,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:50,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482033444] [2024-06-21 18:56:50,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:50,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:51,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:51,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482033444] [2024-06-21 18:56:51,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482033444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:51,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:51,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:56:51,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672908141] [2024-06-21 18:56:51,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:51,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:56:51,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:51,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:56:51,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:56:52,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-21 18:56:52,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 399 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2024-06-21 18:56:52,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:52,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-21 18:56:52,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:53,752 INFO L124 PetriNetUnfolderBase]: 12425/16964 cut-off events. [2024-06-21 18:56:53,752 INFO L125 PetriNetUnfolderBase]: For 59443/59443 co-relation queries the response was YES. [2024-06-21 18:56:53,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58878 conditions, 16964 events. 12425/16964 cut-off events. For 59443/59443 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 91847 event pairs, 8520 based on Foata normal form. 3/16951 useless extension candidates. Maximal degree in co-relation 58855. Up to 16709 conditions per place. [2024-06-21 18:56:53,858 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 75 selfloop transitions, 29 changer transitions 0/110 dead transitions. [2024-06-21 18:56:53,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 110 transitions, 799 flow [2024-06-21 18:56:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:56:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:56:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-21 18:56:53,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559748427672956 [2024-06-21 18:56:53,860 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 399 flow. Second operand 6 states and 145 transitions. [2024-06-21 18:56:53,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 110 transitions, 799 flow [2024-06-21 18:56:53,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 110 transitions, 709 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-21 18:56:53,875 INFO L231 Difference]: Finished difference. Result has 74 places, 87 transitions, 519 flow [2024-06-21 18:56:53,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=74, PETRI_TRANSITIONS=87} [2024-06-21 18:56:53,876 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2024-06-21 18:56:53,876 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 87 transitions, 519 flow [2024-06-21 18:56:53,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2024-06-21 18:56:53,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:53,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:53,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 18:56:53,877 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:56:53,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:53,878 INFO L85 PathProgramCache]: Analyzing trace with hash 898811714, now seen corresponding path program 3 times [2024-06-21 18:56:53,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:53,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517461130] [2024-06-21 18:56:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:53,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:55,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:55,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517461130] [2024-06-21 18:56:55,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517461130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:55,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:55,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:56:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822570564] [2024-06-21 18:56:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:55,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:56:55,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:55,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:56:55,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:56:55,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 18:56:55,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 519 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:56:55,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:55,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 18:56:55,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:57,022 INFO L124 PetriNetUnfolderBase]: 11021/15433 cut-off events. [2024-06-21 18:56:57,023 INFO L125 PetriNetUnfolderBase]: For 67927/67927 co-relation queries the response was YES. [2024-06-21 18:56:57,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56793 conditions, 15433 events. 11021/15433 cut-off events. For 67927/67927 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 86730 event pairs, 7474 based on Foata normal form. 3/15273 useless extension candidates. Maximal degree in co-relation 56768. Up to 14807 conditions per place. [2024-06-21 18:56:57,121 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 67 selfloop transitions, 40 changer transitions 0/114 dead transitions. [2024-06-21 18:56:57,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 114 transitions, 853 flow [2024-06-21 18:56:57,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:56:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:56:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-21 18:56:57,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-21 18:56:57,123 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 519 flow. Second operand 6 states and 150 transitions. [2024-06-21 18:56:57,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 114 transitions, 853 flow [2024-06-21 18:56:57,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 114 transitions, 806 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-21 18:56:57,139 INFO L231 Difference]: Finished difference. Result has 79 places, 91 transitions, 619 flow [2024-06-21 18:56:57,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=619, PETRI_PLACES=79, PETRI_TRANSITIONS=91} [2024-06-21 18:56:57,140 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-21 18:56:57,140 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 91 transitions, 619 flow [2024-06-21 18:56:57,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:56:57,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:57,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:57,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 18:56:57,141 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:56:57,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash 898819650, now seen corresponding path program 1 times [2024-06-21 18:56:57,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:57,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354884648] [2024-06-21 18:56:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:57,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:59,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:59,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354884648] [2024-06-21 18:56:59,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354884648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:59,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:59,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:56:59,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371016523] [2024-06-21 18:56:59,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:59,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:56:59,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:59,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:56:59,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:56:59,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:56:59,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 91 transitions, 619 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:56:59,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:59,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:56:59,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:01,270 INFO L124 PetriNetUnfolderBase]: 15097/20564 cut-off events. [2024-06-21 18:57:01,270 INFO L125 PetriNetUnfolderBase]: For 118595/118595 co-relation queries the response was YES. [2024-06-21 18:57:01,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79592 conditions, 20564 events. 15097/20564 cut-off events. For 118595/118595 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 110981 event pairs, 10489 based on Foata normal form. 3/20555 useless extension candidates. Maximal degree in co-relation 79564. Up to 20270 conditions per place. [2024-06-21 18:57:01,398 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 104 selfloop transitions, 20 changer transitions 0/129 dead transitions. [2024-06-21 18:57:01,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 129 transitions, 1026 flow [2024-06-21 18:57:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:57:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:57:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-21 18:57:01,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42587601078167114 [2024-06-21 18:57:01,399 INFO L175 Difference]: Start difference. First operand has 79 places, 91 transitions, 619 flow. Second operand 7 states and 158 transitions. [2024-06-21 18:57:01,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 129 transitions, 1026 flow [2024-06-21 18:57:01,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 129 transitions, 906 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-21 18:57:01,417 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 630 flow [2024-06-21 18:57:01,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=630, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2024-06-21 18:57:01,418 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-21 18:57:01,418 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 630 flow [2024-06-21 18:57:01,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:01,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:01,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:01,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 18:57:01,419 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:57:01,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:01,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2019278920, now seen corresponding path program 1 times [2024-06-21 18:57:01,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:01,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666575692] [2024-06-21 18:57:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:01,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:02,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666575692] [2024-06-21 18:57:02,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666575692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:02,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:02,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:57:02,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309298130] [2024-06-21 18:57:02,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:02,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:57:02,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:02,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:57:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:57:02,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 18:57:02,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 630 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:02,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:02,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 18:57:02,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:04,601 INFO L124 PetriNetUnfolderBase]: 13135/18377 cut-off events. [2024-06-21 18:57:04,601 INFO L125 PetriNetUnfolderBase]: For 121462/121478 co-relation queries the response was YES. [2024-06-21 18:57:04,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77091 conditions, 18377 events. 13135/18377 cut-off events. For 121462/121478 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 104380 event pairs, 6741 based on Foata normal form. 19/18212 useless extension candidates. Maximal degree in co-relation 77061. Up to 17618 conditions per place. [2024-06-21 18:57:04,730 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 109 selfloop transitions, 38 changer transitions 0/155 dead transitions. [2024-06-21 18:57:04,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 155 transitions, 1148 flow [2024-06-21 18:57:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:57:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:57:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-21 18:57:04,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067385444743935 [2024-06-21 18:57:04,732 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 630 flow. Second operand 7 states and 188 transitions. [2024-06-21 18:57:04,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 155 transitions, 1148 flow [2024-06-21 18:57:04,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 155 transitions, 1079 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-21 18:57:04,757 INFO L231 Difference]: Finished difference. Result has 87 places, 114 transitions, 767 flow [2024-06-21 18:57:04,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=767, PETRI_PLACES=87, PETRI_TRANSITIONS=114} [2024-06-21 18:57:04,758 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-21 18:57:04,758 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 114 transitions, 767 flow [2024-06-21 18:57:04,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:04,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:04,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:04,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 18:57:04,759 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:57:04,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:04,759 INFO L85 PathProgramCache]: Analyzing trace with hash -526028738, now seen corresponding path program 2 times [2024-06-21 18:57:04,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:04,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242502194] [2024-06-21 18:57:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:04,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:05,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:05,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242502194] [2024-06-21 18:57:05,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242502194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:05,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:05,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:57:05,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434313999] [2024-06-21 18:57:05,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:05,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:57:05,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:05,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:57:05,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:57:06,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-21 18:57:06,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 114 transitions, 767 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:06,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:06,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-21 18:57:06,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:08,283 INFO L124 PetriNetUnfolderBase]: 14916/20377 cut-off events. [2024-06-21 18:57:08,283 INFO L125 PetriNetUnfolderBase]: For 172844/172864 co-relation queries the response was YES. [2024-06-21 18:57:08,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91986 conditions, 20377 events. 14916/20377 cut-off events. For 172844/172864 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 111439 event pairs, 7472 based on Foata normal form. 23/20399 useless extension candidates. Maximal degree in co-relation 91955. Up to 19930 conditions per place. [2024-06-21 18:57:08,418 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 113 selfloop transitions, 57 changer transitions 0/177 dead transitions. [2024-06-21 18:57:08,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 177 transitions, 1472 flow [2024-06-21 18:57:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:57:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:57:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-21 18:57:08,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45754716981132076 [2024-06-21 18:57:08,420 INFO L175 Difference]: Start difference. First operand has 87 places, 114 transitions, 767 flow. Second operand 8 states and 194 transitions. [2024-06-21 18:57:08,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 177 transitions, 1472 flow [2024-06-21 18:57:08,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 177 transitions, 1366 flow, removed 50 selfloop flow, removed 1 redundant places. [2024-06-21 18:57:08,474 INFO L231 Difference]: Finished difference. Result has 96 places, 139 transitions, 1085 flow [2024-06-21 18:57:08,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1085, PETRI_PLACES=96, PETRI_TRANSITIONS=139} [2024-06-21 18:57:08,475 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-06-21 18:57:08,475 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 139 transitions, 1085 flow [2024-06-21 18:57:08,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:08,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:08,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:08,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 18:57:08,476 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:57:08,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash -525908768, now seen corresponding path program 3 times [2024-06-21 18:57:08,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:08,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147395244] [2024-06-21 18:57:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:08,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:09,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:09,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147395244] [2024-06-21 18:57:09,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147395244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:09,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:09,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:57:09,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400514330] [2024-06-21 18:57:09,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:09,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:57:09,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:09,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:57:09,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:57:09,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 18:57:09,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 139 transitions, 1085 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:09,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:09,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 18:57:09,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:12,233 INFO L124 PetriNetUnfolderBase]: 13292/18610 cut-off events. [2024-06-21 18:57:12,233 INFO L125 PetriNetUnfolderBase]: For 181239/181247 co-relation queries the response was YES. [2024-06-21 18:57:12,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88801 conditions, 18610 events. 13292/18610 cut-off events. For 181239/181247 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 105713 event pairs, 6430 based on Foata normal form. 11/18440 useless extension candidates. Maximal degree in co-relation 88765. Up to 17705 conditions per place. [2024-06-21 18:57:12,339 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 107 selfloop transitions, 73 changer transitions 0/188 dead transitions. [2024-06-21 18:57:12,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 188 transitions, 1801 flow [2024-06-21 18:57:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:57:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:57:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-21 18:57:12,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834905660377358 [2024-06-21 18:57:12,341 INFO L175 Difference]: Start difference. First operand has 96 places, 139 transitions, 1085 flow. Second operand 8 states and 205 transitions. [2024-06-21 18:57:12,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 188 transitions, 1801 flow [2024-06-21 18:57:12,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 188 transitions, 1686 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-21 18:57:12,409 INFO L231 Difference]: Finished difference. Result has 102 places, 147 transitions, 1318 flow [2024-06-21 18:57:12,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1318, PETRI_PLACES=102, PETRI_TRANSITIONS=147} [2024-06-21 18:57:12,410 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-21 18:57:12,410 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 147 transitions, 1318 flow [2024-06-21 18:57:12,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:12,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:12,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:12,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 18:57:12,411 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:57:12,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2086927030, now seen corresponding path program 4 times [2024-06-21 18:57:12,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:12,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895596803] [2024-06-21 18:57:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:12,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:13,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:13,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895596803] [2024-06-21 18:57:13,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895596803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:13,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:13,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:57:13,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853448332] [2024-06-21 18:57:13,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:13,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:57:13,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:57:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:57:13,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-21 18:57:13,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 147 transitions, 1318 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:13,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:13,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-21 18:57:13,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:16,323 INFO L124 PetriNetUnfolderBase]: 15101/20649 cut-off events. [2024-06-21 18:57:16,323 INFO L125 PetriNetUnfolderBase]: For 255076/255088 co-relation queries the response was YES. [2024-06-21 18:57:16,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105645 conditions, 20649 events. 15101/20649 cut-off events. For 255076/255088 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 112994 event pairs, 7403 based on Foata normal form. 15/20660 useless extension candidates. Maximal degree in co-relation 105607. Up to 20130 conditions per place. [2024-06-21 18:57:16,469 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 130 selfloop transitions, 75 changer transitions 0/212 dead transitions. [2024-06-21 18:57:16,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 212 transitions, 2211 flow [2024-06-21 18:57:16,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:57:16,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:57:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-21 18:57:16,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46630727762803237 [2024-06-21 18:57:16,471 INFO L175 Difference]: Start difference. First operand has 102 places, 147 transitions, 1318 flow. Second operand 7 states and 173 transitions. [2024-06-21 18:57:16,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 212 transitions, 2211 flow [2024-06-21 18:57:16,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 212 transitions, 2080 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-21 18:57:16,561 INFO L231 Difference]: Finished difference. Result has 106 places, 181 transitions, 1791 flow [2024-06-21 18:57:16,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1791, PETRI_PLACES=106, PETRI_TRANSITIONS=181} [2024-06-21 18:57:16,562 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-21 18:57:16,562 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 181 transitions, 1791 flow [2024-06-21 18:57:16,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:16,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:16,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:16,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 18:57:16,563 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:57:16,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash 296002134, now seen corresponding path program 5 times [2024-06-21 18:57:16,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:16,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837633548] [2024-06-21 18:57:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:16,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:17,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:17,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837633548] [2024-06-21 18:57:17,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837633548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:17,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:17,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:57:17,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326048958] [2024-06-21 18:57:17,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:17,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:57:17,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:57:17,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:57:17,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 18:57:17,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 181 transitions, 1791 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:17,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:17,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 18:57:17,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:20,600 INFO L124 PetriNetUnfolderBase]: 13520/18956 cut-off events. [2024-06-21 18:57:20,601 INFO L125 PetriNetUnfolderBase]: For 260298/260306 co-relation queries the response was YES. [2024-06-21 18:57:20,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101752 conditions, 18956 events. 13520/18956 cut-off events. For 260298/260306 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 107511 event pairs, 6477 based on Foata normal form. 11/18803 useless extension candidates. Maximal degree in co-relation 101711. Up to 17959 conditions per place. [2024-06-21 18:57:20,746 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 130 selfloop transitions, 93 changer transitions 0/231 dead transitions. [2024-06-21 18:57:20,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 231 transitions, 2698 flow [2024-06-21 18:57:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:57:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:57:20,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-21 18:57:20,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49595687331536387 [2024-06-21 18:57:20,748 INFO L175 Difference]: Start difference. First operand has 106 places, 181 transitions, 1791 flow. Second operand 7 states and 184 transitions. [2024-06-21 18:57:20,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 231 transitions, 2698 flow [2024-06-21 18:57:20,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 231 transitions, 2593 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-21 18:57:20,852 INFO L231 Difference]: Finished difference. Result has 113 places, 197 transitions, 2216 flow [2024-06-21 18:57:20,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2216, PETRI_PLACES=113, PETRI_TRANSITIONS=197} [2024-06-21 18:57:20,853 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 57 predicate places. [2024-06-21 18:57:20,853 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 197 transitions, 2216 flow [2024-06-21 18:57:20,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:20,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:20,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:20,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 18:57:20,854 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:57:20,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:20,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2093360770, now seen corresponding path program 6 times [2024-06-21 18:57:20,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:20,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501215031] [2024-06-21 18:57:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:20,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:22,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:22,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501215031] [2024-06-21 18:57:22,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501215031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:22,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:22,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:57:22,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703609127] [2024-06-21 18:57:22,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:22,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:57:22,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:57:22,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:57:22,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-21 18:57:22,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 197 transitions, 2216 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:22,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:22,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-21 18:57:22,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:25,588 INFO L124 PetriNetUnfolderBase]: 15188/20800 cut-off events. [2024-06-21 18:57:25,589 INFO L125 PetriNetUnfolderBase]: For 354128/354136 co-relation queries the response was YES. [2024-06-21 18:57:25,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118915 conditions, 20800 events. 15188/20800 cut-off events. For 354128/354136 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 113947 event pairs, 7379 based on Foata normal form. 11/20807 useless extension candidates. Maximal degree in co-relation 118870. Up to 20022 conditions per place. [2024-06-21 18:57:26,004 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 99 selfloop transitions, 128 changer transitions 0/234 dead transitions. [2024-06-21 18:57:26,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 234 transitions, 2962 flow [2024-06-21 18:57:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:57:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:57:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-21 18:57:26,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743935309973046 [2024-06-21 18:57:26,006 INFO L175 Difference]: Start difference. First operand has 113 places, 197 transitions, 2216 flow. Second operand 7 states and 176 transitions. [2024-06-21 18:57:26,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 234 transitions, 2962 flow [2024-06-21 18:57:26,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 234 transitions, 2835 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-21 18:57:26,192 INFO L231 Difference]: Finished difference. Result has 117 places, 201 transitions, 2456 flow [2024-06-21 18:57:26,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2456, PETRI_PLACES=117, PETRI_TRANSITIONS=201} [2024-06-21 18:57:26,193 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 61 predicate places. [2024-06-21 18:57:26,193 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 201 transitions, 2456 flow [2024-06-21 18:57:26,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:26,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:26,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:26,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 18:57:26,194 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:57:26,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2093607034, now seen corresponding path program 1 times [2024-06-21 18:57:26,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:26,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776645160] [2024-06-21 18:57:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:26,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:28,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:28,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:28,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776645160] [2024-06-21 18:57:28,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776645160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:28,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:28,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:57:28,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091429566] [2024-06-21 18:57:28,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:28,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:57:28,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:28,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:57:28,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:57:28,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:57:28,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 201 transitions, 2456 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:28,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:28,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:57:28,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:31,887 INFO L124 PetriNetUnfolderBase]: 15773/21501 cut-off events. [2024-06-21 18:57:31,887 INFO L125 PetriNetUnfolderBase]: For 409735/409735 co-relation queries the response was YES. [2024-06-21 18:57:31,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122999 conditions, 21501 events. 15773/21501 cut-off events. For 409735/409735 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 116234 event pairs, 9152 based on Foata normal form. 6/21495 useless extension candidates. Maximal degree in co-relation 122952. Up to 21152 conditions per place. [2024-06-21 18:57:32,057 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 214 selfloop transitions, 23 changer transitions 0/242 dead transitions. [2024-06-21 18:57:32,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 242 transitions, 3140 flow [2024-06-21 18:57:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:57:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:57:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-21 18:57:32,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39622641509433965 [2024-06-21 18:57:32,059 INFO L175 Difference]: Start difference. First operand has 117 places, 201 transitions, 2456 flow. Second operand 9 states and 189 transitions. [2024-06-21 18:57:32,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 242 transitions, 3140 flow [2024-06-21 18:57:32,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 242 transitions, 2805 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-21 18:57:32,244 INFO L231 Difference]: Finished difference. Result has 121 places, 204 transitions, 2255 flow [2024-06-21 18:57:32,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2255, PETRI_PLACES=121, PETRI_TRANSITIONS=204} [2024-06-21 18:57:32,245 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 65 predicate places. [2024-06-21 18:57:32,245 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 204 transitions, 2255 flow [2024-06-21 18:57:32,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:32,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:32,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:32,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 18:57:32,245 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:57:32,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:32,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1087052858, now seen corresponding path program 1 times [2024-06-21 18:57:32,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:32,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004117452] [2024-06-21 18:57:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:32,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:33,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:33,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004117452] [2024-06-21 18:57:33,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004117452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:33,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:33,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:57:33,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961385296] [2024-06-21 18:57:33,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:33,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:57:33,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:33,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:57:33,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:57:33,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:57:33,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 204 transitions, 2255 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:33,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:33,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:57:33,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:36,970 INFO L124 PetriNetUnfolderBase]: 15759/21481 cut-off events. [2024-06-21 18:57:36,971 INFO L125 PetriNetUnfolderBase]: For 447315/447315 co-relation queries the response was YES. [2024-06-21 18:57:37,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125593 conditions, 21481 events. 15759/21481 cut-off events. For 447315/447315 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 115719 event pairs, 9335 based on Foata normal form. 4/21469 useless extension candidates. Maximal degree in co-relation 125545. Up to 21191 conditions per place. [2024-06-21 18:57:37,157 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 205 selfloop transitions, 12 changer transitions 0/222 dead transitions. [2024-06-21 18:57:37,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 222 transitions, 2793 flow [2024-06-21 18:57:37,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:57:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:57:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-21 18:57:37,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42641509433962266 [2024-06-21 18:57:37,158 INFO L175 Difference]: Start difference. First operand has 121 places, 204 transitions, 2255 flow. Second operand 5 states and 113 transitions. [2024-06-21 18:57:37,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 222 transitions, 2793 flow [2024-06-21 18:57:37,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 222 transitions, 2677 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-21 18:57:37,383 INFO L231 Difference]: Finished difference. Result has 118 places, 208 transitions, 2238 flow [2024-06-21 18:57:37,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2238, PETRI_PLACES=118, PETRI_TRANSITIONS=208} [2024-06-21 18:57:37,384 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-21 18:57:37,384 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 208 transitions, 2238 flow [2024-06-21 18:57:37,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:37,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:37,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:37,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 18:57:37,385 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:57:37,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:37,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1638080421, now seen corresponding path program 1 times [2024-06-21 18:57:37,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:37,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520709513] [2024-06-21 18:57:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:37,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:38,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:38,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520709513] [2024-06-21 18:57:38,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520709513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:38,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:38,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:57:38,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085870214] [2024-06-21 18:57:38,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:38,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:57:38,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:38,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:57:38,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:57:39,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 18:57:39,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 208 transitions, 2238 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:39,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:39,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 18:57:39,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:42,207 INFO L124 PetriNetUnfolderBase]: 13563/18968 cut-off events. [2024-06-21 18:57:42,207 INFO L125 PetriNetUnfolderBase]: For 437066/437078 co-relation queries the response was YES. [2024-06-21 18:57:42,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119773 conditions, 18968 events. 13563/18968 cut-off events. For 437066/437078 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 107754 event pairs, 7301 based on Foata normal form. 17/18855 useless extension candidates. Maximal degree in co-relation 119725. Up to 18062 conditions per place. [2024-06-21 18:57:42,364 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 162 selfloop transitions, 96 changer transitions 0/266 dead transitions. [2024-06-21 18:57:42,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 266 transitions, 3169 flow [2024-06-21 18:57:42,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:57:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:57:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-21 18:57:42,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47641509433962265 [2024-06-21 18:57:42,365 INFO L175 Difference]: Start difference. First operand has 118 places, 208 transitions, 2238 flow. Second operand 8 states and 202 transitions. [2024-06-21 18:57:42,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 266 transitions, 3169 flow [2024-06-21 18:57:42,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 266 transitions, 3114 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-21 18:57:42,529 INFO L231 Difference]: Finished difference. Result has 124 places, 226 transitions, 2742 flow [2024-06-21 18:57:42,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2742, PETRI_PLACES=124, PETRI_TRANSITIONS=226} [2024-06-21 18:57:42,530 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 68 predicate places. [2024-06-21 18:57:42,530 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 226 transitions, 2742 flow [2024-06-21 18:57:42,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:42,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:42,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:42,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 18:57:42,531 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:57:42,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1826844737, now seen corresponding path program 2 times [2024-06-21 18:57:42,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:42,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642985611] [2024-06-21 18:57:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:42,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:44,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:44,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642985611] [2024-06-21 18:57:44,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642985611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:44,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:44,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:57:44,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335925341] [2024-06-21 18:57:44,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:44,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:57:44,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:44,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:57:44,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:57:44,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 18:57:44,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 226 transitions, 2742 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:44,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:44,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 18:57:44,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:47,637 INFO L124 PetriNetUnfolderBase]: 13585/19121 cut-off events. [2024-06-21 18:57:47,637 INFO L125 PetriNetUnfolderBase]: For 446964/446984 co-relation queries the response was YES. [2024-06-21 18:57:47,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122420 conditions, 19121 events. 13585/19121 cut-off events. For 446964/446984 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 109397 event pairs, 6599 based on Foata normal form. 23/19077 useless extension candidates. Maximal degree in co-relation 122369. Up to 18088 conditions per place. [2024-06-21 18:57:47,801 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 174 selfloop transitions, 95 changer transitions 0/277 dead transitions. [2024-06-21 18:57:47,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 277 transitions, 3566 flow [2024-06-21 18:57:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:57:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:57:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-21 18:57:47,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46750524109014674 [2024-06-21 18:57:47,803 INFO L175 Difference]: Start difference. First operand has 124 places, 226 transitions, 2742 flow. Second operand 9 states and 223 transitions. [2024-06-21 18:57:47,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 277 transitions, 3566 flow [2024-06-21 18:57:48,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 277 transitions, 3316 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-21 18:57:48,056 INFO L231 Difference]: Finished difference. Result has 127 places, 230 transitions, 2804 flow [2024-06-21 18:57:48,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2492, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2804, PETRI_PLACES=127, PETRI_TRANSITIONS=230} [2024-06-21 18:57:48,056 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-06-21 18:57:48,056 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 230 transitions, 2804 flow [2024-06-21 18:57:48,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:48,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:48,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:48,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 18:57:48,057 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:57:48,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:48,058 INFO L85 PathProgramCache]: Analyzing trace with hash 698615929, now seen corresponding path program 3 times [2024-06-21 18:57:48,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:48,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465608021] [2024-06-21 18:57:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat