./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix026_power.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix026_power.opt_tso.opt.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/mix026_power.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix026_power.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 18:45:27,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:45:27,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:45:27,702 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:45:27,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:45:27,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:45:27,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:45:27,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:45:27,724 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:45:27,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:45:27,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:45:27,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:45:27,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:45:27,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:45:27,730 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:45:27,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:45:27,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:45:27,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:45:27,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:45:27,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:45:27,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:45:27,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:45:27,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:45:27,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:45:27,732 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:45:27,732 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:45:27,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:45:27,733 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:45:27,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:45:27,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:45:27,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:45:27,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:45:27,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:45:27,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:45:27,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:45:27,735 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:45:27,735 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:45:27,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:45:27,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:45:27,736 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:45:27,736 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:45:27,736 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:45:27,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:45:27,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:45:27,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:45:27,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:45:27,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:45:27,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:45:27,934 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:45:27,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix026_power.opt_tso.opt.i [2024-06-21 18:45:28,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:45:29,175 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:45:29,176 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix026_power.opt_tso.opt.i [2024-06-21 18:45:29,188 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7842412d6/29555a7720af4ba882253032aa18f2a9/FLAG09bade764 [2024-06-21 18:45:29,198 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7842412d6/29555a7720af4ba882253032aa18f2a9 [2024-06-21 18:45:29,200 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:45:29,201 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:45:29,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix026_power.opt_tso.opt.yml/witness.yml [2024-06-21 18:45:29,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:45:29,287 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:45:29,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:45:29,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:45:29,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:45:29,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:45:29" (1/2) ... [2024-06-21 18:45:29,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc10ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:45:29, skipping insertion in model container [2024-06-21 18:45:29,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:45:29" (1/2) ... [2024-06-21 18:45:29,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@27861c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:45:29, skipping insertion in model container [2024-06-21 18:45:29,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:45:29" (2/2) ... [2024-06-21 18:45:29,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc10ca0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29, skipping insertion in model container [2024-06-21 18:45:29,325 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:45:29" (2/2) ... [2024-06-21 18:45:29,325 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:45:29,354 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:45:29,356 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$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$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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 )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_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 )a >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 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 >= 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 >= 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 >= 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 18:45:29,356 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$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$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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 )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_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 )a >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 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 >= 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 >= 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 >= 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 18:45:29,356 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$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$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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 )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_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 )a >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 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 >= 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 >= 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 >= 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 18:45:29,356 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$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$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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 )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_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 )a >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 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 >= 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 >= 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 >= 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 18:45:29,356 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:45:29,357 INFO L106 edCorrectnessWitness]: ghost_update [L863-L863] multithreaded = 1; [2024-06-21 18:45:29,393 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:45:29,694 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:45:29,703 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 18:45:29,850 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:45:29,890 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:45:29,890 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29 WrapperNode [2024-06-21 18:45:29,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:45:29,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:45:29,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:45:29,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:45:29,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:29,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:29,970 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-21 18:45:29,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:45:29,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:45:29,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:45:29,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:45:29,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:29,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:29,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:30,001 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 18:45:30,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:30,001 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:30,011 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:30,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:30,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:30,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:30,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:45:30,026 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:45:30,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:45:30,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:45:30,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (1/1) ... [2024-06-21 18:45:30,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:45:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:45:30,062 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 18:45:30,066 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 18:45:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:45:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:45:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 18:45:30,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 18:45:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 18:45:30,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 18:45:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 18:45:30,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 18:45:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 18:45:30,102 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 18:45:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:45:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:45:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:45:30,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:45:30,103 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 18:45:30,229 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:45:30,230 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:45:30,743 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:45:30,743 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:45:30,854 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:45:30,855 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 18:45:30,855 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:45:30 BoogieIcfgContainer [2024-06-21 18:45:30,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:45:30,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:45:30,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:45:30,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:45:30,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:45:29" (1/4) ... [2024-06-21 18:45:30,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce739bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:45:30, skipping insertion in model container [2024-06-21 18:45:30,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:45:29" (2/4) ... [2024-06-21 18:45:30,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce739bb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:45:30, skipping insertion in model container [2024-06-21 18:45:30,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:45:29" (3/4) ... [2024-06-21 18:45:30,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce739bb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:45:30, skipping insertion in model container [2024-06-21 18:45:30,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:45:30" (4/4) ... [2024-06-21 18:45:30,861 INFO L112 eAbstractionObserver]: Analyzing ICFG mix026_power.opt_tso.opt.i [2024-06-21 18:45:30,875 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:45:30,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 18:45:30,876 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:45:30,952 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 18:45:30,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-21 18:45:31,001 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-21 18:45:31,001 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:45:31,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 18:45:31,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-21 18:45:31,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-21 18:45:31,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:45:31,017 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;@5efc5710, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:45:31,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 18:45:31,020 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:45:31,020 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 18:45:31,020 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:45:31,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:31,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 18:45:31,022 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 18:45:31,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash 393972039, now seen corresponding path program 1 times [2024-06-21 18:45:31,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:31,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290822752] [2024-06-21 18:45:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:31,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:32,507 INFO 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 18:45:32,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:32,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290822752] [2024-06-21 18:45:32,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290822752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:32,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:32,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:45:32,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049022602] [2024-06-21 18:45:32,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:32,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:45:32,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:45:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:45:32,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-21 18:45:32,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:32,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:32,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-21 18:45:32,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:34,079 INFO L124 PetriNetUnfolderBase]: 8152/11667 cut-off events. [2024-06-21 18:45:34,079 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-06-21 18:45:34,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23154 conditions, 11667 events. 8152/11667 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 65865 event pairs, 6174 based on Foata normal form. 1/11304 useless extension candidates. Maximal degree in co-relation 23141. Up to 11108 conditions per place. [2024-06-21 18:45:34,141 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 42 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-21 18:45:34,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 227 flow [2024-06-21 18:45:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:45:34,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:45:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-21 18:45:34,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-06-21 18:45:34,152 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 99 transitions. [2024-06-21 18:45:34,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 227 flow [2024-06-21 18:45:34,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 18:45:34,160 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-21 18:45:34,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-21 18:45:34,165 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-21 18:45:34,165 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-21 18:45:34,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:34,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:34,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:34,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:45:34,166 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 18:45:34,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash 650993028, now seen corresponding path program 1 times [2024-06-21 18:45:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:34,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38234402] [2024-06-21 18:45:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:34,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:35,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:35,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38234402] [2024-06-21 18:45:35,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38234402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:35,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:35,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:45:35,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178481376] [2024-06-21 18:45:35,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:35,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:45:35,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:35,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:45:35,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:45:35,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-21 18:45:35,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:35,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:35,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-21 18:45:35,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:36,637 INFO L124 PetriNetUnfolderBase]: 9537/13256 cut-off events. [2024-06-21 18:45:36,637 INFO L125 PetriNetUnfolderBase]: For 2494/2494 co-relation queries the response was YES. [2024-06-21 18:45:36,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30019 conditions, 13256 events. 9537/13256 cut-off events. For 2494/2494 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 72134 event pairs, 6489 based on Foata normal form. 4/13257 useless extension candidates. Maximal degree in co-relation 30007. Up to 12918 conditions per place. [2024-06-21 18:45:36,713 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 53 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-21 18:45:36,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 321 flow [2024-06-21 18:45:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:45:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:45:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-21 18:45:36,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2024-06-21 18:45:36,717 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 126 transitions. [2024-06-21 18:45:36,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 321 flow [2024-06-21 18:45:36,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:45:36,720 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-21 18:45:36,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-21 18:45:36,721 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-21 18:45:36,721 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-21 18:45:36,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:36,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:36,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:36,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:45:36,724 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 18:45:36,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:36,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1294051482, now seen corresponding path program 1 times [2024-06-21 18:45:36,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:36,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345421267] [2024-06-21 18:45:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:36,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:38,132 INFO 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 18:45:38,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345421267] [2024-06-21 18:45:38,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345421267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:38,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:38,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:45:38,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960534289] [2024-06-21 18:45:38,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:38,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:45:38,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:38,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:45:38,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:45:38,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-21 18:45:38,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 18:45:38,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:38,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-21 18:45:38,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:39,590 INFO L124 PetriNetUnfolderBase]: 9527/13236 cut-off events. [2024-06-21 18:45:39,590 INFO L125 PetriNetUnfolderBase]: For 7033/7033 co-relation queries the response was YES. [2024-06-21 18:45:39,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33398 conditions, 13236 events. 9527/13236 cut-off events. For 7033/7033 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 71826 event pairs, 5670 based on Foata normal form. 4/13237 useless extension candidates. Maximal degree in co-relation 33384. Up to 12883 conditions per place. [2024-06-21 18:45:39,657 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 63 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2024-06-21 18:45:39,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 429 flow [2024-06-21 18:45:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:45:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:45:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-21 18:45:39,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-06-21 18:45:39,659 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 155 transitions. [2024-06-21 18:45:39,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 429 flow [2024-06-21 18:45:39,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 84 transitions, 410 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 18:45:39,663 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 227 flow [2024-06-21 18:45:39,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-06-21 18:45:39,663 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2024-06-21 18:45:39,664 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 227 flow [2024-06-21 18:45:39,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 18:45:39,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:39,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:39,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:45:39,664 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 18:45:39,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash -615976893, now seen corresponding path program 1 times [2024-06-21 18:45:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:39,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656800648] [2024-06-21 18:45:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:39,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:41,325 INFO 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 18:45:41,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:41,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656800648] [2024-06-21 18:45:41,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656800648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:41,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:41,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:45:41,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948724561] [2024-06-21 18:45:41,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:41,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:45:41,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:41,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:45:41,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:45:41,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-21 18:45:41,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 18:45:41,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:41,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-21 18:45:41,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:42,873 INFO L124 PetriNetUnfolderBase]: 9511/13194 cut-off events. [2024-06-21 18:45:42,873 INFO L125 PetriNetUnfolderBase]: For 13572/13572 co-relation queries the response was YES. [2024-06-21 18:45:42,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36675 conditions, 13194 events. 9511/13194 cut-off events. For 13572/13572 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 71609 event pairs, 4705 based on Foata normal form. 8/13199 useless extension candidates. Maximal degree in co-relation 36660. Up to 12817 conditions per place. [2024-06-21 18:45:42,950 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 70 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-21 18:45:42,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 513 flow [2024-06-21 18:45:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:45:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:45:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-21 18:45:42,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2024-06-21 18:45:42,952 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 227 flow. Second operand 6 states and 180 transitions. [2024-06-21 18:45:42,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 513 flow [2024-06-21 18:45:42,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 94 transitions, 480 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 18:45:42,957 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 258 flow [2024-06-21 18:45:42,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-06-21 18:45:42,957 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-21 18:45:42,957 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 258 flow [2024-06-21 18:45:42,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 18:45:42,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:42,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:42,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:45:42,958 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 18:45:42,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:42,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1194276801, now seen corresponding path program 1 times [2024-06-21 18:45:42,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:42,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775538536] [2024-06-21 18:45:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:43,957 INFO 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 18:45:43,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:43,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775538536] [2024-06-21 18:45:43,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775538536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:43,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:43,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:45:43,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740756164] [2024-06-21 18:45:43,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:43,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:45:43,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:45:43,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:45:44,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:45:44,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 258 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 18:45:44,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:44,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:45:44,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:45,471 INFO L124 PetriNetUnfolderBase]: 9502/13117 cut-off events. [2024-06-21 18:45:45,471 INFO L125 PetriNetUnfolderBase]: For 22936/22936 co-relation queries the response was YES. [2024-06-21 18:45:45,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39237 conditions, 13117 events. 9502/13117 cut-off events. For 22936/22936 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 71506 event pairs, 6417 based on Foata normal form. 3/13060 useless extension candidates. Maximal degree in co-relation 39220. Up to 12874 conditions per place. [2024-06-21 18:45:45,539 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 59 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2024-06-21 18:45:45,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 478 flow [2024-06-21 18:45:45,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:45:45,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:45:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-21 18:45:45,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-06-21 18:45:45,541 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 258 flow. Second operand 5 states and 128 transitions. [2024-06-21 18:45:45,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 478 flow [2024-06-21 18:45:45,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 430 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 18:45:45,544 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 294 flow [2024-06-21 18:45:45,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-06-21 18:45:45,545 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-21 18:45:45,545 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 294 flow [2024-06-21 18:45:45,545 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 18:45:45,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:45,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:45,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:45:45,546 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 18:45:45,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:45,546 INFO L85 PathProgramCache]: Analyzing trace with hash 114563554, now seen corresponding path program 1 times [2024-06-21 18:45:45,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:45,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007583376] [2024-06-21 18:45:45,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:45,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:46,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:46,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:46,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007583376] [2024-06-21 18:45:46,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007583376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:46,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:46,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:45:46,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392351204] [2024-06-21 18:45:46,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:46,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:45:46,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:45:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:45:46,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:45:46,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 18:45:46,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:46,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:45:46,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:48,308 INFO L124 PetriNetUnfolderBase]: 9547/13203 cut-off events. [2024-06-21 18:45:48,309 INFO L125 PetriNetUnfolderBase]: For 31761/31761 co-relation queries the response was YES. [2024-06-21 18:45:48,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42699 conditions, 13203 events. 9547/13203 cut-off events. For 31761/31761 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 71912 event pairs, 5984 based on Foata normal form. 3/13173 useless extension candidates. Maximal degree in co-relation 42679. Up to 12907 conditions per place. [2024-06-21 18:45:48,385 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 75 selfloop transitions, 22 changer transitions 0/104 dead transitions. [2024-06-21 18:45:48,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 630 flow [2024-06-21 18:45:48,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:45:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:45:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-21 18:45:48,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49175824175824173 [2024-06-21 18:45:48,386 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 294 flow. Second operand 7 states and 179 transitions. [2024-06-21 18:45:48,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 630 flow [2024-06-21 18:45:48,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 104 transitions, 597 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-21 18:45:48,393 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 397 flow [2024-06-21 18:45:48,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2024-06-21 18:45:48,393 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-21 18:45:48,393 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 397 flow [2024-06-21 18:45:48,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 18:45:48,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:48,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:48,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:45:48,394 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 18:45:48,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:48,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2107554694, now seen corresponding path program 2 times [2024-06-21 18:45:48,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:48,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561524024] [2024-06-21 18:45:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:48,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:49,506 INFO 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 18:45:49,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:49,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561524024] [2024-06-21 18:45:49,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561524024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:49,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:49,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:45:49,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690792413] [2024-06-21 18:45:49,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:49,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:45:49,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:49,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:45:49,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:45:49,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:45:49,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 397 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 18:45:49,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:49,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:45:49,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:51,201 INFO L124 PetriNetUnfolderBase]: 9605/13283 cut-off events. [2024-06-21 18:45:51,201 INFO L125 PetriNetUnfolderBase]: For 44376/44376 co-relation queries the response was YES. [2024-06-21 18:45:51,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46671 conditions, 13283 events. 9605/13283 cut-off events. For 44376/44376 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 72284 event pairs, 6035 based on Foata normal form. 3/13250 useless extension candidates. Maximal degree in co-relation 46648. Up to 12969 conditions per place. [2024-06-21 18:45:51,287 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 73 selfloop transitions, 29 changer transitions 0/109 dead transitions. [2024-06-21 18:45:51,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 109 transitions, 793 flow [2024-06-21 18:45:51,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:45:51,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:45:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-21 18:45:51,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2024-06-21 18:45:51,289 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 397 flow. Second operand 6 states and 155 transitions. [2024-06-21 18:45:51,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 109 transitions, 793 flow [2024-06-21 18:45:51,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 109 transitions, 703 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-21 18:45:51,298 INFO L231 Difference]: Finished difference. Result has 73 places, 86 transitions, 517 flow [2024-06-21 18:45:51,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=517, PETRI_PLACES=73, PETRI_TRANSITIONS=86} [2024-06-21 18:45:51,299 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-06-21 18:45:51,299 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 86 transitions, 517 flow [2024-06-21 18:45:51,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 18:45:51,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:51,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:51,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 18:45:51,300 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 18:45:51,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2098467664, now seen corresponding path program 3 times [2024-06-21 18:45:51,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:51,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137818872] [2024-06-21 18:45:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:51,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:52,549 INFO 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 18:45:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137818872] [2024-06-21 18:45:52,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137818872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:52,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:52,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:45:52,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323386757] [2024-06-21 18:45:52,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:52,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:45:52,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:52,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:45:52,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:45:52,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:45:52,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 86 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 18:45:52,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:52,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:45:52,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:54,246 INFO L124 PetriNetUnfolderBase]: 9596/13283 cut-off events. [2024-06-21 18:45:54,246 INFO L125 PetriNetUnfolderBase]: For 58525/58525 co-relation queries the response was YES. [2024-06-21 18:45:54,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49916 conditions, 13283 events. 9596/13283 cut-off events. For 58525/58525 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 72566 event pairs, 5991 based on Foata normal form. 3/13247 useless extension candidates. Maximal degree in co-relation 49891. Up to 12912 conditions per place. [2024-06-21 18:45:54,318 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 66 selfloop transitions, 40 changer transitions 0/113 dead transitions. [2024-06-21 18:45:54,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 113 transitions, 849 flow [2024-06-21 18:45:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:45:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:45:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-21 18:45:54,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2024-06-21 18:45:54,320 INFO L175 Difference]: Start difference. First operand has 73 places, 86 transitions, 517 flow. Second operand 6 states and 155 transitions. [2024-06-21 18:45:54,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 113 transitions, 849 flow [2024-06-21 18:45:54,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 802 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-21 18:45:54,330 INFO L231 Difference]: Finished difference. Result has 78 places, 90 transitions, 617 flow [2024-06-21 18:45:54,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=617, PETRI_PLACES=78, PETRI_TRANSITIONS=90} [2024-06-21 18:45:54,331 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-06-21 18:45:54,331 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 90 transitions, 617 flow [2024-06-21 18:45:54,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 18:45:54,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:54,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 18:45:54,331 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 18:45:54,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:54,332 INFO L85 PathProgramCache]: Analyzing trace with hash -943703266, now seen corresponding path program 1 times [2024-06-21 18:45:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:54,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757859243] [2024-06-21 18:45:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:54,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:56,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:56,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757859243] [2024-06-21 18:45:56,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757859243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:56,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:56,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:45:56,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309170186] [2024-06-21 18:45:56,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:56,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:45:56,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:56,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:45:56,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:45:56,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:45:56,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 90 transitions, 617 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:56,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:45:56,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:45:56,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:45:58,392 INFO L124 PetriNetUnfolderBase]: 9983/13883 cut-off events. [2024-06-21 18:45:58,392 INFO L125 PetriNetUnfolderBase]: For 77034/77034 co-relation queries the response was YES. [2024-06-21 18:45:58,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55108 conditions, 13883 events. 9983/13883 cut-off events. For 77034/77034 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 76561 event pairs, 6304 based on Foata normal form. 3/13725 useless extension candidates. Maximal degree in co-relation 55080. Up to 13512 conditions per place. [2024-06-21 18:45:58,493 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 101 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2024-06-21 18:45:58,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 128 transitions, 1018 flow [2024-06-21 18:45:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:45:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:45:58,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-21 18:45:58,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2024-06-21 18:45:58,497 INFO L175 Difference]: Start difference. First operand has 78 places, 90 transitions, 617 flow. Second operand 7 states and 176 transitions. [2024-06-21 18:45:58,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 128 transitions, 1018 flow [2024-06-21 18:45:58,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 128 transitions, 898 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-21 18:45:58,519 INFO L231 Difference]: Finished difference. Result has 82 places, 98 transitions, 628 flow [2024-06-21 18:45:58,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=628, PETRI_PLACES=82, PETRI_TRANSITIONS=98} [2024-06-21 18:45:58,521 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-21 18:45:58,521 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 98 transitions, 628 flow [2024-06-21 18:45:58,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:45:58,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:45:58,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:45:58,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 18:45:58,522 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 18:45:58,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:45:58,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1511423070, now seen corresponding path program 1 times [2024-06-21 18:45:58,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:45:58,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563090487] [2024-06-21 18:45:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:45:58,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:45:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:45:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:45:59,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:45:59,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563090487] [2024-06-21 18:45:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563090487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:45:59,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:45:59,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:45:59,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355190796] [2024-06-21 18:45:59,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:45:59,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:45:59,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:45:59,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:45:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:46:00,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:46:00,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 98 transitions, 628 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:46:00,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:00,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:46:00,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:02,007 INFO L124 PetriNetUnfolderBase]: 11451/15833 cut-off events. [2024-06-21 18:46:02,007 INFO L125 PetriNetUnfolderBase]: For 109157/109165 co-relation queries the response was YES. [2024-06-21 18:46:02,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67884 conditions, 15833 events. 11451/15833 cut-off events. For 109157/109165 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 87301 event pairs, 6446 based on Foata normal form. 11/15804 useless extension candidates. Maximal degree in co-relation 67854. Up to 15411 conditions per place. [2024-06-21 18:46:02,132 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 106 selfloop transitions, 35 changer transitions 0/149 dead transitions. [2024-06-21 18:46:02,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 149 transitions, 1120 flow [2024-06-21 18:46:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:46:02,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:46:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-21 18:46:02,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4951923076923077 [2024-06-21 18:46:02,134 INFO L175 Difference]: Start difference. First operand has 82 places, 98 transitions, 628 flow. Second operand 8 states and 206 transitions. [2024-06-21 18:46:02,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 149 transitions, 1120 flow [2024-06-21 18:46:02,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 149 transitions, 1051 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-21 18:46:02,157 INFO L231 Difference]: Finished difference. Result has 87 places, 109 transitions, 751 flow [2024-06-21 18:46:02,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=751, PETRI_PLACES=87, PETRI_TRANSITIONS=109} [2024-06-21 18:46:02,158 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 32 predicate places. [2024-06-21 18:46:02,159 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 751 flow [2024-06-21 18:46:02,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:46:02,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:02,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:02,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 18:46:02,160 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 18:46:02,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:02,160 INFO L85 PathProgramCache]: Analyzing trace with hash -752870632, now seen corresponding path program 2 times [2024-06-21 18:46:02,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:02,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092222441] [2024-06-21 18:46:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:02,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:46:03,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:03,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092222441] [2024-06-21 18:46:03,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092222441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:03,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:03,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:46:03,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402666738] [2024-06-21 18:46:03,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:03,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:46:03,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:46:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:46:03,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:46:03,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 751 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:46:03,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:03,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:46:03,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:05,757 INFO L124 PetriNetUnfolderBase]: 11572/16106 cut-off events. [2024-06-21 18:46:05,757 INFO L125 PetriNetUnfolderBase]: For 130669/130717 co-relation queries the response was YES. [2024-06-21 18:46:05,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73615 conditions, 16106 events. 11572/16106 cut-off events. For 130669/130717 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 89455 event pairs, 5615 based on Foata normal form. 11/16114 useless extension candidates. Maximal degree in co-relation 73583. Up to 15554 conditions per place. [2024-06-21 18:46:05,890 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 109 selfloop transitions, 48 changer transitions 0/165 dead transitions. [2024-06-21 18:46:05,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 165 transitions, 1396 flow [2024-06-21 18:46:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:46:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:46:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-21 18:46:05,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4951923076923077 [2024-06-21 18:46:05,894 INFO L175 Difference]: Start difference. First operand has 87 places, 109 transitions, 751 flow. Second operand 8 states and 206 transitions. [2024-06-21 18:46:05,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 165 transitions, 1396 flow [2024-06-21 18:46:05,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 165 transitions, 1214 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-21 18:46:05,926 INFO L231 Difference]: Finished difference. Result has 91 places, 127 transitions, 915 flow [2024-06-21 18:46:05,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=915, PETRI_PLACES=91, PETRI_TRANSITIONS=127} [2024-06-21 18:46:05,926 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-21 18:46:05,927 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 127 transitions, 915 flow [2024-06-21 18:46:05,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:46:05,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:05,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:05,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 18:46:05,927 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 18:46:05,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash 868693400, now seen corresponding path program 3 times [2024-06-21 18:46:05,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:05,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104191198] [2024-06-21 18:46:05,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:05,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:07,701 INFO 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 18:46:07,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:07,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104191198] [2024-06-21 18:46:07,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104191198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:07,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:07,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:46:07,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697343295] [2024-06-21 18:46:07,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:07,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:46:07,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:07,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:46:07,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:46:07,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:46:07,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 127 transitions, 915 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 18:46:07,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:07,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:46:07,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:09,832 INFO L124 PetriNetUnfolderBase]: 11885/16418 cut-off events. [2024-06-21 18:46:09,832 INFO L125 PetriNetUnfolderBase]: For 151003/151003 co-relation queries the response was YES. [2024-06-21 18:46:09,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76783 conditions, 16418 events. 11885/16418 cut-off events. For 151003/151003 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 88856 event pairs, 5709 based on Foata normal form. 3/16418 useless extension candidates. Maximal degree in co-relation 76749. Up to 15896 conditions per place. [2024-06-21 18:46:09,955 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 121 selfloop transitions, 58 changer transitions 0/185 dead transitions. [2024-06-21 18:46:09,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 185 transitions, 1605 flow [2024-06-21 18:46:09,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:46:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:46:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-21 18:46:09,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47836538461538464 [2024-06-21 18:46:09,956 INFO L175 Difference]: Start difference. First operand has 91 places, 127 transitions, 915 flow. Second operand 8 states and 199 transitions. [2024-06-21 18:46:09,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 185 transitions, 1605 flow [2024-06-21 18:46:09,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 185 transitions, 1472 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-21 18:46:09,996 INFO L231 Difference]: Finished difference. Result has 97 places, 147 transitions, 1167 flow [2024-06-21 18:46:09,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1167, PETRI_PLACES=97, PETRI_TRANSITIONS=147} [2024-06-21 18:46:09,996 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2024-06-21 18:46:09,997 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 147 transitions, 1167 flow [2024-06-21 18:46:09,997 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 18:46:09,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:09,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:09,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 18:46:09,997 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 18:46:09,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash -909805154, now seen corresponding path program 4 times [2024-06-21 18:46:09,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:09,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39808357] [2024-06-21 18:46:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:09,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:11,398 INFO 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 18:46:11,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:11,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39808357] [2024-06-21 18:46:11,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39808357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:11,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:11,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:46:11,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134559857] [2024-06-21 18:46:11,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:11,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:46:11,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:11,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:46:11,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:46:11,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:46:11,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 147 transitions, 1167 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:46:11,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:11,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:46:11,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:13,795 INFO L124 PetriNetUnfolderBase]: 11577/16147 cut-off events. [2024-06-21 18:46:13,796 INFO L125 PetriNetUnfolderBase]: For 181475/181527 co-relation queries the response was YES. [2024-06-21 18:46:13,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80798 conditions, 16147 events. 11577/16147 cut-off events. For 181475/181527 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 89571 event pairs, 5569 based on Foata normal form. 7/16139 useless extension candidates. Maximal degree in co-relation 80762. Up to 15555 conditions per place. [2024-06-21 18:46:13,893 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 132 selfloop transitions, 74 changer transitions 0/216 dead transitions. [2024-06-21 18:46:13,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 216 transitions, 2055 flow [2024-06-21 18:46:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:46:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:46:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-21 18:46:13,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-21 18:46:13,894 INFO L175 Difference]: Start difference. First operand has 97 places, 147 transitions, 1167 flow. Second operand 8 states and 195 transitions. [2024-06-21 18:46:13,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 216 transitions, 2055 flow [2024-06-21 18:46:13,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 216 transitions, 1941 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-21 18:46:13,935 INFO L231 Difference]: Finished difference. Result has 101 places, 185 transitions, 1649 flow [2024-06-21 18:46:13,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1649, PETRI_PLACES=101, PETRI_TRANSITIONS=185} [2024-06-21 18:46:13,936 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2024-06-21 18:46:13,936 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 185 transitions, 1649 flow [2024-06-21 18:46:13,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:46:13,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:13,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:13,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 18:46:13,937 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 18:46:13,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash 632593180, now seen corresponding path program 5 times [2024-06-21 18:46:13,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:13,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035767027] [2024-06-21 18:46:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:13,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:46:15,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:15,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035767027] [2024-06-21 18:46:15,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035767027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:15,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:15,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:46:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135315843] [2024-06-21 18:46:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:15,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:46:15,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:46:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:46:15,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:46:15,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 185 transitions, 1649 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 18:46:15,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:15,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:46:15,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:18,136 INFO L124 PetriNetUnfolderBase]: 12107/16753 cut-off events. [2024-06-21 18:46:18,137 INFO L125 PetriNetUnfolderBase]: For 208417/208417 co-relation queries the response was YES. [2024-06-21 18:46:18,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86616 conditions, 16753 events. 12107/16753 cut-off events. For 208417/208417 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 90602 event pairs, 5715 based on Foata normal form. 3/16743 useless extension candidates. Maximal degree in co-relation 86578. Up to 16175 conditions per place. [2024-06-21 18:46:18,267 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 151 selfloop transitions, 75 changer transitions 0/232 dead transitions. [2024-06-21 18:46:18,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 232 transitions, 2410 flow [2024-06-21 18:46:18,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:46:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:46:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-21 18:46:18,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48626373626373626 [2024-06-21 18:46:18,268 INFO L175 Difference]: Start difference. First operand has 101 places, 185 transitions, 1649 flow. Second operand 7 states and 177 transitions. [2024-06-21 18:46:18,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 232 transitions, 2410 flow [2024-06-21 18:46:18,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 232 transitions, 2235 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-21 18:46:18,359 INFO L231 Difference]: Finished difference. Result has 106 places, 201 transitions, 1890 flow [2024-06-21 18:46:18,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1890, PETRI_PLACES=106, PETRI_TRANSITIONS=201} [2024-06-21 18:46:18,359 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-06-21 18:46:18,360 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 201 transitions, 1890 flow [2024-06-21 18:46:18,360 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 18:46:18,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:18,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:18,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 18:46:18,360 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 18:46:18,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:18,361 INFO L85 PathProgramCache]: Analyzing trace with hash -905043554, now seen corresponding path program 6 times [2024-06-21 18:46:18,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:18,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357700995] [2024-06-21 18:46:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:18,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:19,932 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 18:46:19,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:19,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357700995] [2024-06-21 18:46:19,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357700995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:19,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:19,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:46:19,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323239398] [2024-06-21 18:46:19,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:19,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:46:19,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:46:19,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:46:20,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:46:20,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 201 transitions, 1890 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 18:46:20,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:20,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:46:20,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:22,207 INFO L124 PetriNetUnfolderBase]: 12098/16743 cut-off events. [2024-06-21 18:46:22,208 INFO L125 PetriNetUnfolderBase]: For 240127/240127 co-relation queries the response was YES. [2024-06-21 18:46:22,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90412 conditions, 16743 events. 12098/16743 cut-off events. For 240127/240127 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 90643 event pairs, 5727 based on Foata normal form. 3/16722 useless extension candidates. Maximal degree in co-relation 90372. Up to 16047 conditions per place. [2024-06-21 18:46:22,342 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 133 selfloop transitions, 100 changer transitions 0/239 dead transitions. [2024-06-21 18:46:22,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 239 transitions, 2568 flow [2024-06-21 18:46:22,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:46:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:46:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-21 18:46:22,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2024-06-21 18:46:22,344 INFO L175 Difference]: Start difference. First operand has 106 places, 201 transitions, 1890 flow. Second operand 7 states and 176 transitions. [2024-06-21 18:46:22,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 239 transitions, 2568 flow [2024-06-21 18:46:22,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 239 transitions, 2456 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-21 18:46:22,479 INFO L231 Difference]: Finished difference. Result has 111 places, 209 transitions, 2110 flow [2024-06-21 18:46:22,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2110, PETRI_PLACES=111, PETRI_TRANSITIONS=209} [2024-06-21 18:46:22,479 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-21 18:46:22,479 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 209 transitions, 2110 flow [2024-06-21 18:46:22,481 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 18:46:22,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:22,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:22,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 18:46:22,482 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 18:46:22,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:22,482 INFO L85 PathProgramCache]: Analyzing trace with hash 809970964, now seen corresponding path program 1 times [2024-06-21 18:46:22,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:22,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497634728] [2024-06-21 18:46:22,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:22,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:24,576 INFO 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 18:46:24,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:24,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497634728] [2024-06-21 18:46:24,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497634728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:24,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:24,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:46:24,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270362688] [2024-06-21 18:46:24,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:24,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:46:24,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:24,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:46:24,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:46:24,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:46:24,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 209 transitions, 2110 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:46:24,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:24,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:46:24,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:26,759 INFO L124 PetriNetUnfolderBase]: 10391/14468 cut-off events. [2024-06-21 18:46:26,759 INFO L125 PetriNetUnfolderBase]: For 247732/247732 co-relation queries the response was YES. [2024-06-21 18:46:26,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82901 conditions, 14468 events. 10391/14468 cut-off events. For 247732/247732 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 79442 event pairs, 5917 based on Foata normal form. 6/14293 useless extension candidates. Maximal degree in co-relation 82858. Up to 14032 conditions per place. [2024-06-21 18:46:26,883 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 220 selfloop transitions, 23 changer transitions 0/250 dead transitions. [2024-06-21 18:46:26,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 250 transitions, 2806 flow [2024-06-21 18:46:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:46:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:46:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-21 18:46:26,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-21 18:46:26,884 INFO L175 Difference]: Start difference. First operand has 111 places, 209 transitions, 2110 flow. Second operand 8 states and 200 transitions. [2024-06-21 18:46:26,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 250 transitions, 2806 flow [2024-06-21 18:46:26,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 250 transitions, 2546 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-21 18:46:26,958 INFO L231 Difference]: Finished difference. Result has 114 places, 212 transitions, 1984 flow [2024-06-21 18:46:26,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1984, PETRI_PLACES=114, PETRI_TRANSITIONS=212} [2024-06-21 18:46:26,959 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-06-21 18:46:26,959 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 212 transitions, 1984 flow [2024-06-21 18:46:26,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:46:26,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:26,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:26,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 18:46:26,960 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 18:46:26,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash 288035626, now seen corresponding path program 1 times [2024-06-21 18:46:26,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:26,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366316518] [2024-06-21 18:46:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:26,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:27,984 INFO 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 18:46:27,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:27,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366316518] [2024-06-21 18:46:27,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366316518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:27,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:27,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:46:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842441660] [2024-06-21 18:46:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:27,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:46:27,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:46:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:46:28,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-21 18:46:28,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 212 transitions, 1984 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:46:28,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:28,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-21 18:46:28,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:29,987 INFO L124 PetriNetUnfolderBase]: 10384/14453 cut-off events. [2024-06-21 18:46:29,987 INFO L125 PetriNetUnfolderBase]: For 264375/264375 co-relation queries the response was YES. [2024-06-21 18:46:30,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83391 conditions, 14453 events. 10384/14453 cut-off events. For 264375/264375 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 79083 event pairs, 5994 based on Foata normal form. 2/14320 useless extension candidates. Maximal degree in co-relation 83348. Up to 14089 conditions per place. [2024-06-21 18:46:30,111 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 210 selfloop transitions, 12 changer transitions 0/229 dead transitions. [2024-06-21 18:46:30,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 229 transitions, 2530 flow [2024-06-21 18:46:30,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:46:30,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:46:30,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-21 18:46:30,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-21 18:46:30,113 INFO L175 Difference]: Start difference. First operand has 114 places, 212 transitions, 1984 flow. Second operand 5 states and 124 transitions. [2024-06-21 18:46:30,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 229 transitions, 2530 flow [2024-06-21 18:46:30,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 229 transitions, 2422 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-21 18:46:30,182 INFO L231 Difference]: Finished difference. Result has 113 places, 216 transitions, 1975 flow [2024-06-21 18:46:30,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1975, PETRI_PLACES=113, PETRI_TRANSITIONS=216} [2024-06-21 18:46:30,182 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-21 18:46:30,182 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 216 transitions, 1975 flow [2024-06-21 18:46:30,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:46:30,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:30,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:30,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 18:46:30,183 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 18:46:30,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:30,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1446585827, now seen corresponding path program 1 times [2024-06-21 18:46:30,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:30,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841803220] [2024-06-21 18:46:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:30,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:46:31,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:31,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841803220] [2024-06-21 18:46:31,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841803220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:31,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:31,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:46:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649553556] [2024-06-21 18:46:31,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:31,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:46:31,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:46:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:46:31,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:46:31,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 216 transitions, 1975 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 18:46:31,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:31,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:46:31,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:34,292 INFO L124 PetriNetUnfolderBase]: 12120/16816 cut-off events. [2024-06-21 18:46:34,292 INFO L125 PetriNetUnfolderBase]: For 318594/318594 co-relation queries the response was YES. [2024-06-21 18:46:34,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98935 conditions, 16816 events. 12120/16816 cut-off events. For 318594/318594 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 91204 event pairs, 5364 based on Foata normal form. 6/16819 useless extension candidates. Maximal degree in co-relation 98890. Up to 16034 conditions per place. [2024-06-21 18:46:34,464 INFO L140 encePairwiseOnDemand]: 35/52 looper letters, 146 selfloop transitions, 114 changer transitions 0/266 dead transitions. [2024-06-21 18:46:34,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 266 transitions, 2755 flow [2024-06-21 18:46:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:46:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:46:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-21 18:46:34,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-21 18:46:34,466 INFO L175 Difference]: Start difference. First operand has 113 places, 216 transitions, 1975 flow. Second operand 9 states and 224 transitions. [2024-06-21 18:46:34,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 266 transitions, 2755 flow [2024-06-21 18:46:34,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 266 transitions, 2688 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 18:46:34,556 INFO L231 Difference]: Finished difference. Result has 118 places, 221 transitions, 2265 flow [2024-06-21 18:46:34,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2265, PETRI_PLACES=118, PETRI_TRANSITIONS=221} [2024-06-21 18:46:34,557 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 63 predicate places. [2024-06-21 18:46:34,557 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 221 transitions, 2265 flow [2024-06-21 18:46:34,557 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 18:46:34,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:34,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:34,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 18:46:34,558 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 18:46:34,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:34,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1159698280, now seen corresponding path program 1 times [2024-06-21 18:46:34,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:34,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772473758] [2024-06-21 18:46:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:34,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:36,243 INFO 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 18:46:36,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:36,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772473758] [2024-06-21 18:46:36,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772473758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:36,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:36,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:46:36,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553722658] [2024-06-21 18:46:36,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:36,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:46:36,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:36,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:46:36,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:46:36,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:46:36,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 221 transitions, 2265 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 18:46:36,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:36,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:46:36,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:38,809 INFO L124 PetriNetUnfolderBase]: 12173/16888 cut-off events. [2024-06-21 18:46:38,809 INFO L125 PetriNetUnfolderBase]: For 361113/361113 co-relation queries the response was YES. [2024-06-21 18:46:38,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104811 conditions, 16888 events. 12173/16888 cut-off events. For 361113/361113 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 91668 event pairs, 5364 based on Foata normal form. 3/16888 useless extension candidates. Maximal degree in co-relation 104766. Up to 16100 conditions per place. [2024-06-21 18:46:38,993 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 148 selfloop transitions, 123 changer transitions 0/277 dead transitions. [2024-06-21 18:46:38,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 277 transitions, 3295 flow [2024-06-21 18:46:38,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:46:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:46:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-21 18:46:38,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2024-06-21 18:46:38,996 INFO L175 Difference]: Start difference. First operand has 118 places, 221 transitions, 2265 flow. Second operand 9 states and 226 transitions. [2024-06-21 18:46:38,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 277 transitions, 3295 flow [2024-06-21 18:46:39,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 277 transitions, 2942 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-21 18:46:39,112 INFO L231 Difference]: Finished difference. Result has 120 places, 229 transitions, 2394 flow [2024-06-21 18:46:39,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2394, PETRI_PLACES=120, PETRI_TRANSITIONS=229} [2024-06-21 18:46:39,113 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-21 18:46:39,113 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 229 transitions, 2394 flow [2024-06-21 18:46:39,113 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 18:46:39,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:39,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:39,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 18:46:39,113 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 18:46:39,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:39,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1159692700, now seen corresponding path program 2 times [2024-06-21 18:46:39,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:39,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747903680] [2024-06-21 18:46:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:39,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:41,370 INFO 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 18:46:41,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:41,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747903680] [2024-06-21 18:46:41,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747903680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:41,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:41,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:46:41,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341237341] [2024-06-21 18:46:41,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:41,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:46:41,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:41,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:46:41,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:46:41,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:46:41,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 229 transitions, 2394 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 18:46:41,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:41,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:46:41,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:44,604 INFO L124 PetriNetUnfolderBase]: 12164/16868 cut-off events. [2024-06-21 18:46:44,605 INFO L125 PetriNetUnfolderBase]: For 403854/403854 co-relation queries the response was YES. [2024-06-21 18:46:44,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107957 conditions, 16868 events. 12164/16868 cut-off events. For 403854/403854 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 91455 event pairs, 5364 based on Foata normal form. 3/16868 useless extension candidates. Maximal degree in co-relation 107912. Up to 16091 conditions per place. [2024-06-21 18:46:44,743 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 145 selfloop transitions, 123 changer transitions 0/274 dead transitions. [2024-06-21 18:46:44,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 274 transitions, 3090 flow [2024-06-21 18:46:44,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:46:44,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:46:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-21 18:46:44,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-21 18:46:44,746 INFO L175 Difference]: Start difference. First operand has 120 places, 229 transitions, 2394 flow. Second operand 9 states and 224 transitions. [2024-06-21 18:46:44,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 274 transitions, 3090 flow [2024-06-21 18:46:44,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 274 transitions, 2826 flow, removed 82 selfloop flow, removed 5 redundant places. [2024-06-21 18:46:44,921 INFO L231 Difference]: Finished difference. Result has 124 places, 229 transitions, 2388 flow [2024-06-21 18:46:44,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2388, PETRI_PLACES=124, PETRI_TRANSITIONS=229} [2024-06-21 18:46:44,922 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 69 predicate places. [2024-06-21 18:46:44,922 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 229 transitions, 2388 flow [2024-06-21 18:46:44,922 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 18:46:44,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:44,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:44,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 18:46:44,927 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:46:44,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1864446824, now seen corresponding path program 3 times [2024-06-21 18:46:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:44,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309897444] [2024-06-21 18:46:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:44,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:47,537 INFO 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 18:46:47,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:47,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309897444] [2024-06-21 18:46:47,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309897444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:47,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:47,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:46:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056763478] [2024-06-21 18:46:47,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:47,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:46:47,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:46:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:46:47,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:46:47,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 229 transitions, 2388 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 18:46:47,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:47,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:46:47,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:50,530 INFO L124 PetriNetUnfolderBase]: 12253/17011 cut-off events. [2024-06-21 18:46:50,530 INFO L125 PetriNetUnfolderBase]: For 427876/427876 co-relation queries the response was YES. [2024-06-21 18:46:50,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110527 conditions, 17011 events. 12253/17011 cut-off events. For 427876/427876 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 92119 event pairs, 5366 based on Foata normal form. 3/17001 useless extension candidates. Maximal degree in co-relation 110480. Up to 16250 conditions per place. [2024-06-21 18:46:50,666 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 167 selfloop transitions, 113 changer transitions 0/286 dead transitions. [2024-06-21 18:46:50,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 286 transitions, 3537 flow [2024-06-21 18:46:50,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:46:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:46:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-21 18:46:50,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49278846153846156 [2024-06-21 18:46:50,668 INFO L175 Difference]: Start difference. First operand has 124 places, 229 transitions, 2388 flow. Second operand 8 states and 205 transitions. [2024-06-21 18:46:50,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 286 transitions, 3537 flow [2024-06-21 18:46:50,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 286 transitions, 3169 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-21 18:46:50,853 INFO L231 Difference]: Finished difference. Result has 125 places, 245 transitions, 2630 flow [2024-06-21 18:46:50,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2630, PETRI_PLACES=125, PETRI_TRANSITIONS=245} [2024-06-21 18:46:50,854 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2024-06-21 18:46:50,854 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 245 transitions, 2630 flow [2024-06-21 18:46:50,854 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 18:46:50,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:50,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:50,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 18:46:50,855 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:46:50,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash -904501045, now seen corresponding path program 2 times [2024-06-21 18:46:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:50,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895965945] [2024-06-21 18:46:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:52,505 INFO 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 18:46:52,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:52,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895965945] [2024-06-21 18:46:52,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895965945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:52,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:52,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:46:52,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813053719] [2024-06-21 18:46:52,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:52,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:46:52,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:52,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:46:52,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:46:52,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:46:52,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 245 transitions, 2630 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 18:46:52,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:52,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:46:52,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:46:55,300 INFO L124 PetriNetUnfolderBase]: 12293/16997 cut-off events. [2024-06-21 18:46:55,300 INFO L125 PetriNetUnfolderBase]: For 510746/510754 co-relation queries the response was YES. [2024-06-21 18:46:55,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114446 conditions, 16997 events. 12293/16997 cut-off events. For 510746/510754 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 92080 event pairs, 6396 based on Foata normal form. 9/16938 useless extension candidates. Maximal degree in co-relation 114397. Up to 16512 conditions per place. [2024-06-21 18:46:55,635 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 241 selfloop transitions, 45 changer transitions 0/292 dead transitions. [2024-06-21 18:46:55,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 292 transitions, 3467 flow [2024-06-21 18:46:55,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:46:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:46:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-21 18:46:55,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-21 18:46:55,637 INFO L175 Difference]: Start difference. First operand has 125 places, 245 transitions, 2630 flow. Second operand 8 states and 196 transitions. [2024-06-21 18:46:55,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 292 transitions, 3467 flow [2024-06-21 18:46:55,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 292 transitions, 3267 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-21 18:46:55,945 INFO L231 Difference]: Finished difference. Result has 130 places, 255 transitions, 2697 flow [2024-06-21 18:46:55,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2697, PETRI_PLACES=130, PETRI_TRANSITIONS=255} [2024-06-21 18:46:55,946 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2024-06-21 18:46:55,946 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 255 transitions, 2697 flow [2024-06-21 18:46:55,946 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 18:46:55,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:46:55,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:46:55,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 18:46:55,946 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:46:55,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:46:55,947 INFO L85 PathProgramCache]: Analyzing trace with hash -625610392, now seen corresponding path program 4 times [2024-06-21 18:46:55,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:46:55,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371177786] [2024-06-21 18:46:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:46:55,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:46:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:46:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:46:57,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:46:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371177786] [2024-06-21 18:46:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371177786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:46:57,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:46:57,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:46:57,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681243764] [2024-06-21 18:46:57,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:46:57,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:46:57,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:46:57,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:46:57,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:46:57,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:46:57,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 255 transitions, 2697 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 18:46:57,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:46:57,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:46:57,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:00,710 INFO L124 PetriNetUnfolderBase]: 12284/17053 cut-off events. [2024-06-21 18:47:00,710 INFO L125 PetriNetUnfolderBase]: For 516645/516645 co-relation queries the response was YES. [2024-06-21 18:47:00,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118151 conditions, 17053 events. 12284/17053 cut-off events. For 516645/516645 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 92339 event pairs, 5366 based on Foata normal form. 3/17043 useless extension candidates. Maximal degree in co-relation 118099. Up to 16295 conditions per place. [2024-06-21 18:47:00,863 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 172 selfloop transitions, 115 changer transitions 0/293 dead transitions. [2024-06-21 18:47:00,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 293 transitions, 3412 flow [2024-06-21 18:47:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:47:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:47:00,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-21 18:47:00,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831730769230769 [2024-06-21 18:47:00,865 INFO L175 Difference]: Start difference. First operand has 130 places, 255 transitions, 2697 flow. Second operand 8 states and 201 transitions. [2024-06-21 18:47:00,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 293 transitions, 3412 flow [2024-06-21 18:47:01,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 293 transitions, 3158 flow, removed 89 selfloop flow, removed 5 redundant places. [2024-06-21 18:47:01,051 INFO L231 Difference]: Finished difference. Result has 133 places, 255 transitions, 2689 flow [2024-06-21 18:47:01,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2689, PETRI_PLACES=133, PETRI_TRANSITIONS=255} [2024-06-21 18:47:01,052 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 78 predicate places. [2024-06-21 18:47:01,052 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 255 transitions, 2689 flow [2024-06-21 18:47:01,052 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 18:47:01,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:01,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:01,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 18:47:01,052 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:47:01,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:01,053 INFO L85 PathProgramCache]: Analyzing trace with hash -668129393, now seen corresponding path program 3 times [2024-06-21 18:47:01,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:01,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770921561] [2024-06-21 18:47:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:01,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:47:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:02,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770921561] [2024-06-21 18:47:02,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770921561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:02,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:02,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:47:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69728923] [2024-06-21 18:47:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:02,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:47:02,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:47:02,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:47:02,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:47:02,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 255 transitions, 2689 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 18:47:02,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:02,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:47:02,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:05,971 INFO L124 PetriNetUnfolderBase]: 12328/17048 cut-off events. [2024-06-21 18:47:05,972 INFO L125 PetriNetUnfolderBase]: For 580066/580081 co-relation queries the response was YES. [2024-06-21 18:47:06,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119731 conditions, 17048 events. 12328/17048 cut-off events. For 580066/580081 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 92541 event pairs, 6402 based on Foata normal form. 13/16988 useless extension candidates. Maximal degree in co-relation 119678. Up to 16466 conditions per place. [2024-06-21 18:47:06,111 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 228 selfloop transitions, 67 changer transitions 0/301 dead transitions. [2024-06-21 18:47:06,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 301 transitions, 3553 flow [2024-06-21 18:47:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:47:06,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:47:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-21 18:47:06,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735576923076923 [2024-06-21 18:47:06,113 INFO L175 Difference]: Start difference. First operand has 133 places, 255 transitions, 2689 flow. Second operand 8 states and 197 transitions. [2024-06-21 18:47:06,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 301 transitions, 3553 flow [2024-06-21 18:47:06,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 301 transitions, 3333 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 18:47:06,336 INFO L231 Difference]: Finished difference. Result has 136 places, 264 transitions, 2785 flow [2024-06-21 18:47:06,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2469, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2785, PETRI_PLACES=136, PETRI_TRANSITIONS=264} [2024-06-21 18:47:06,337 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 81 predicate places. [2024-06-21 18:47:06,337 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 264 transitions, 2785 flow [2024-06-21 18:47:06,337 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 18:47:06,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:06,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:06,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 18:47:06,337 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:47:06,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2007440072, now seen corresponding path program 5 times [2024-06-21 18:47:06,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:06,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574415814] [2024-06-21 18:47:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:06,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:47:08,110 INFO 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 18:47:08,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:47:08,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574415814] [2024-06-21 18:47:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574415814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:47:08,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:47:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:47:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047710241] [2024-06-21 18:47:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:47:08,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:47:08,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:47:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:47:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:47:08,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-21 18:47:08,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 264 transitions, 2785 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 18:47:08,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:47:08,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-21 18:47:08,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:47:11,243 INFO L124 PetriNetUnfolderBase]: 12350/17153 cut-off events. [2024-06-21 18:47:11,243 INFO L125 PetriNetUnfolderBase]: For 591141/591141 co-relation queries the response was YES. [2024-06-21 18:47:11,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123879 conditions, 17153 events. 12350/17153 cut-off events. For 591141/591141 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 92833 event pairs, 5378 based on Foata normal form. 3/17132 useless extension candidates. Maximal degree in co-relation 123824. Up to 16097 conditions per place. [2024-06-21 18:47:11,396 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 125 selfloop transitions, 181 changer transitions 0/312 dead transitions. [2024-06-21 18:47:11,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 312 transitions, 3945 flow [2024-06-21 18:47:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:47:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:47:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-21 18:47:11,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-21 18:47:11,398 INFO L175 Difference]: Start difference. First operand has 136 places, 264 transitions, 2785 flow. Second operand 8 states and 204 transitions. [2024-06-21 18:47:11,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 312 transitions, 3945 flow [2024-06-21 18:47:11,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 312 transitions, 3752 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-21 18:47:11,644 INFO L231 Difference]: Finished difference. Result has 140 places, 272 transitions, 3237 flow [2024-06-21 18:47:11,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3237, PETRI_PLACES=140, PETRI_TRANSITIONS=272} [2024-06-21 18:47:11,644 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2024-06-21 18:47:11,644 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 272 transitions, 3237 flow [2024-06-21 18:47:11,645 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 18:47:11,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:47:11,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:47:11,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 18:47:11,645 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:47:11,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:47:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash -660712643, now seen corresponding path program 4 times [2024-06-21 18:47:11,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:47:11,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032504192] [2024-06-21 18:47:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:47:11,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:47:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat