./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix004.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/mix004.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix004.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix004.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-7724a2d-m [2024-06-27 23:09:44,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:09:44,401 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:09:44,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:09:44,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:09:44,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:09:44,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:09:44,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:09:44,421 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:09:44,421 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:09:44,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:09:44,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:09:44,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:09:44,422 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:09:44,423 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:09:44,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:09:44,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:09:44,423 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:09:44,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:09:44,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:09:44,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:09:44,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:09:44,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:09:44,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:09:44,426 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:09:44,426 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:09:44,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:09:44,426 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:09:44,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:09:44,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:09:44,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:09:44,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:09:44,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:09:44,433 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:09:44,434 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:09:44,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:09:44,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:09:44,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:09:44,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:09:44,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:09:44,435 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:09:44,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:09:44,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:09:44,436 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:09:44,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:09:44,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:09:44,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:09:44,653 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:09:44,653 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:09:44,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix004.opt.i [2024-06-27 23:09:45,638 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:09:45,865 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:09:45,866 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.opt.i [2024-06-27 23:09:45,891 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53d974765/c33487a676d34ab4adad423d13beb4d3/FLAG3b29e44bc [2024-06-27 23:09:45,905 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53d974765/c33487a676d34ab4adad423d13beb4d3 [2024-06-27 23:09:45,907 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:09:45,908 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:09:45,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix004.opt.yml/witness.yml [2024-06-27 23:09:45,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:09:45,992 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:09:45,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:09:45,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:09:45,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:09:45,997 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:09:45" (1/2) ... [2024-06-27 23:09:45,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:09:45, skipping insertion in model container [2024-06-27 23:09:45,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:09:45" (1/2) ... [2024-06-27 23:09:45,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3551ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:09:45, skipping insertion in model container [2024-06-27 23:09:46,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:09:45" (2/2) ... [2024-06-27 23:09:46,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d26f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46, skipping insertion in model container [2024-06-27 23:09:46,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:09:45" (2/2) ... [2024-06-27 23:09:46,000 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:09:46,025 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:09:46,029 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:09:46,030 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:09:46,030 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:09:46,030 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:09:46,030 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:09:46,031 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-27 23:09:46,092 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:09:46,356 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:09:46,371 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:09:46,525 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:09:46,570 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:09:46,571 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46 WrapperNode [2024-06-27 23:09:46,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:09:46,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:09:46,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:09:46,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:09:46,577 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 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,592 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 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,626 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 163 [2024-06-27 23:09:46,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:09:46,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:09:46,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:09:46,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:09:46,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,665 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]. [2024-06-27 23:09:46,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,676 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,678 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:09:46,688 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:09:46,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:09:46,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:09:46,689 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46" (1/1) ... [2024-06-27 23:09:46,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:09:46,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:09:46,723 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) [2024-06-27 23:09:46,733 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 [2024-06-27 23:09:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:09:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:09:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:09:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:09:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:09:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:09:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:09:46,771 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:09:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 23:09:46,771 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 23:09:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:09:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:09:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:09:46,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:09:46,774 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:09:46,906 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:09:46,909 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:09:47,291 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:09:47,292 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:09:47,461 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:09:47,462 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:09:47,462 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:09:47 BoogieIcfgContainer [2024-06-27 23:09:47,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:09:47,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:09:47,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:09:47,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:09:47,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:09:45" (1/4) ... [2024-06-27 23:09:47,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3865e554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:09:47, skipping insertion in model container [2024-06-27 23:09:47,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:09:45" (2/4) ... [2024-06-27 23:09:47,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3865e554 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:09:47, skipping insertion in model container [2024-06-27 23:09:47,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:09:46" (3/4) ... [2024-06-27 23:09:47,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3865e554 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:09:47, skipping insertion in model container [2024-06-27 23:09:47,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:09:47" (4/4) ... [2024-06-27 23:09:47,471 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.opt.i [2024-06-27 23:09:47,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:09:47,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 23:09:47,486 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:09:47,534 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:09:47,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 23:09:47,598 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-27 23:09:47,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:09:47,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:09:47,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 23:09:47,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-27 23:09:47,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:09:47,652 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;@23cc8dc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:09:47,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 23:09:47,655 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:09:47,656 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:09:47,656 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:09:47,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:47,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:09:47,657 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)] === [2024-06-27 23:09:47,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:47,668 INFO L85 PathProgramCache]: Analyzing trace with hash 417595377, now seen corresponding path program 1 times [2024-06-27 23:09:47,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:47,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367656300] [2024-06-27 23:09:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:47,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:48,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:48,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367656300] [2024-06-27 23:09:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367656300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:48,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:09:48,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105931640] [2024-06-27 23:09:48,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:48,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:09:48,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:48,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:09:48,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:09:49,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-06-27 23:09:49,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:09:49,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:49,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-06-27 23:09:49,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:49,954 INFO L124 PetriNetUnfolderBase]: 4867/7027 cut-off events. [2024-06-27 23:09:49,954 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-06-27 23:09:49,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13939 conditions, 7027 events. 4867/7027 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 40787 event pairs, 3534 based on Foata normal form. 1/6810 useless extension candidates. Maximal degree in co-relation 13926. Up to 6693 conditions per place. [2024-06-27 23:09:49,993 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 40 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-27 23:09:49,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 225 flow [2024-06-27 23:09:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:09:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:09:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-06-27 23:09:50,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 23:09:50,005 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 106 transitions. [2024-06-27 23:09:50,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 225 flow [2024-06-27 23:09:50,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 23:09:50,012 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-27 23:09:50,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 23:09:50,017 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-27 23:09:50,017 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-27 23:09:50,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:09:50,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:50,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:50,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:09:50,018 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)] === [2024-06-27 23:09:50,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1877255952, now seen corresponding path program 1 times [2024-06-27 23:09:50,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:50,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248973709] [2024-06-27 23:09:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:50,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:50,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248973709] [2024-06-27 23:09:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248973709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:50,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:50,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:09:50,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990709953] [2024-06-27 23:09:50,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:50,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:09:50,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:50,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:09:50,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:09:50,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-06-27 23:09:50,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2024-06-27 23:09:50,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:50,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-06-27 23:09:50,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:51,890 INFO L124 PetriNetUnfolderBase]: 5569/7857 cut-off events. [2024-06-27 23:09:51,891 INFO L125 PetriNetUnfolderBase]: For 1758/1758 co-relation queries the response was YES. [2024-06-27 23:09:51,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18044 conditions, 7857 events. 5569/7857 cut-off events. For 1758/1758 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 44449 event pairs, 3437 based on Foata normal form. 4/7815 useless extension candidates. Maximal degree in co-relation 18032. Up to 7610 conditions per place. [2024-06-27 23:09:51,935 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 51 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-27 23:09:51,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 319 flow [2024-06-27 23:09:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:09:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:09:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-06-27 23:09:51,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-06-27 23:09:51,940 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 136 transitions. [2024-06-27 23:09:51,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 319 flow [2024-06-27 23:09:51,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:09:51,942 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-27 23:09:51,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-27 23:09:51,944 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-27 23:09:51,944 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-27 23:09:51,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2024-06-27 23:09:51,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:51,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:51,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:09:51,948 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)] === [2024-06-27 23:09:51,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash 564740903, now seen corresponding path program 1 times [2024-06-27 23:09:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888270506] [2024-06-27 23:09:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:51,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:52,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:52,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888270506] [2024-06-27 23:09:52,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888270506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:52,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:52,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:09:52,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450746850] [2024-06-27 23:09:52,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:52,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:09:52,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:52,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:09:52,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:09:53,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-27 23:09:53,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:09:53,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:53,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-27 23:09:53,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:54,250 INFO L124 PetriNetUnfolderBase]: 7070/9909 cut-off events. [2024-06-27 23:09:54,250 INFO L125 PetriNetUnfolderBase]: For 6002/6002 co-relation queries the response was YES. [2024-06-27 23:09:54,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25343 conditions, 9909 events. 7070/9909 cut-off events. For 6002/6002 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 56128 event pairs, 3323 based on Foata normal form. 8/9858 useless extension candidates. Maximal degree in co-relation 25329. Up to 9556 conditions per place. [2024-06-27 23:09:54,311 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 69 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-27 23:09:54,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 484 flow [2024-06-27 23:09:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:09:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:09:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-27 23:09:54,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60062893081761 [2024-06-27 23:09:54,316 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 6 states and 191 transitions. [2024-06-27 23:09:54,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 484 flow [2024-06-27 23:09:54,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 456 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 23:09:54,320 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 243 flow [2024-06-27 23:09:54,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=156, 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=6, PETRI_FLOW=243, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-27 23:09:54,321 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-27 23:09:54,322 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 243 flow [2024-06-27 23:09:54,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:09:54,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:54,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:54,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:09:54,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:09:54,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:54,323 INFO L85 PathProgramCache]: Analyzing trace with hash -671642190, now seen corresponding path program 1 times [2024-06-27 23:09:54,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:54,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339908999] [2024-06-27 23:09:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:54,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:55,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:55,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339908999] [2024-06-27 23:09:55,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339908999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:55,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:55,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:09:55,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29354085] [2024-06-27 23:09:55,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:55,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:09:55,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:55,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:09:55,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:09:55,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:09:55,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:09:55,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:55,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:09:55,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:56,646 INFO L124 PetriNetUnfolderBase]: 7061/9971 cut-off events. [2024-06-27 23:09:56,647 INFO L125 PetriNetUnfolderBase]: For 11581/11581 co-relation queries the response was YES. [2024-06-27 23:09:56,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28103 conditions, 9971 events. 7061/9971 cut-off events. For 11581/11581 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 56733 event pairs, 3680 based on Foata normal form. 3/9952 useless extension candidates. Maximal degree in co-relation 28086. Up to 9613 conditions per place. [2024-06-27 23:09:56,701 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 58 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-27 23:09:56,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 458 flow [2024-06-27 23:09:56,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:09:56,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:09:56,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-06-27 23:09:56,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169811320754717 [2024-06-27 23:09:56,703 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 243 flow. Second operand 5 states and 137 transitions. [2024-06-27 23:09:56,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 458 flow [2024-06-27 23:09:56,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 418 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:09:56,710 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 286 flow [2024-06-27 23:09:56,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-06-27 23:09:56,712 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-27 23:09:56,712 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 286 flow [2024-06-27 23:09:56,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:09:56,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:56,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:56,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:09:56,713 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)] === [2024-06-27 23:09:56,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:56,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1081318993, now seen corresponding path program 1 times [2024-06-27 23:09:56,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:56,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755136734] [2024-06-27 23:09:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:56,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:57,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:57,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755136734] [2024-06-27 23:09:57,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755136734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:57,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:57,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:09:57,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324306142] [2024-06-27 23:09:57,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:57,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:09:57,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:57,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:09:57,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:09:58,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:09:58,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:09:58,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:58,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:09:58,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:59,416 INFO L124 PetriNetUnfolderBase]: 7137/10068 cut-off events. [2024-06-27 23:09:59,416 INFO L125 PetriNetUnfolderBase]: For 17782/17808 co-relation queries the response was YES. [2024-06-27 23:09:59,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31092 conditions, 10068 events. 7137/10068 cut-off events. For 17782/17808 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 56990 event pairs, 3553 based on Foata normal form. 5/10041 useless extension candidates. Maximal degree in co-relation 31071. Up to 9637 conditions per place. [2024-06-27 23:09:59,473 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 71 selfloop transitions, 31 changer transitions 0/111 dead transitions. [2024-06-27 23:09:59,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 111 transitions, 727 flow [2024-06-27 23:09:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:09:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:09:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-06-27 23:09:59,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-06-27 23:09:59,475 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 286 flow. Second operand 6 states and 174 transitions. [2024-06-27 23:09:59,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 111 transitions, 727 flow [2024-06-27 23:09:59,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 704 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 23:09:59,479 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 477 flow [2024-06-27 23:09:59,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=477, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2024-06-27 23:09:59,480 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-27 23:09:59,480 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 477 flow [2024-06-27 23:09:59,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:09:59,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:59,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:59,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:09:59,481 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)] === [2024-06-27 23:09:59,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:59,481 INFO L85 PathProgramCache]: Analyzing trace with hash -400695417, now seen corresponding path program 2 times [2024-06-27 23:09:59,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:59,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886194964] [2024-06-27 23:09:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:59,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:00,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:00,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886194964] [2024-06-27 23:10:00,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886194964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:00,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:00,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:10:00,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514244848] [2024-06-27 23:10:00,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:00,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:10:00,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:00,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:10:00,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:10:00,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:00,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:00,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:00,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:00,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:02,233 INFO L124 PetriNetUnfolderBase]: 7128/10082 cut-off events. [2024-06-27 23:10:02,233 INFO L125 PetriNetUnfolderBase]: For 25992/26054 co-relation queries the response was YES. [2024-06-27 23:10:02,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33909 conditions, 10082 events. 7128/10082 cut-off events. For 25992/26054 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 57313 event pairs, 3547 based on Foata normal form. 39/10093 useless extension candidates. Maximal degree in co-relation 33883. Up to 9628 conditions per place. [2024-06-27 23:10:02,297 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 66 selfloop transitions, 32 changer transitions 0/107 dead transitions. [2024-06-27 23:10:02,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 769 flow [2024-06-27 23:10:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:10:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:10:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 23:10:02,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314465408805031 [2024-06-27 23:10:02,298 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 477 flow. Second operand 6 states and 169 transitions. [2024-06-27 23:10:02,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 769 flow [2024-06-27 23:10:02,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 107 transitions, 741 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-06-27 23:10:02,311 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 526 flow [2024-06-27 23:10:02,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=526, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2024-06-27 23:10:02,314 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-27 23:10:02,314 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 526 flow [2024-06-27 23:10:02,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:02,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:02,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:02,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:10:02,315 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)] === [2024-06-27 23:10:02,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:02,315 INFO L85 PathProgramCache]: Analyzing trace with hash 265572433, now seen corresponding path program 3 times [2024-06-27 23:10:02,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:02,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235211125] [2024-06-27 23:10:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:02,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:03,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:03,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235211125] [2024-06-27 23:10:03,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235211125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:03,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:03,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:10:03,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393796092] [2024-06-27 23:10:03,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:03,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:10:03,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:10:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:10:03,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:03,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:03,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:03,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:03,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:04,849 INFO L124 PetriNetUnfolderBase]: 7191/10170 cut-off events. [2024-06-27 23:10:04,849 INFO L125 PetriNetUnfolderBase]: For 30107/30133 co-relation queries the response was YES. [2024-06-27 23:10:04,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34831 conditions, 10170 events. 7191/10170 cut-off events. For 30107/30133 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 57825 event pairs, 3545 based on Foata normal form. 7/10153 useless extension candidates. Maximal degree in co-relation 34800. Up to 9689 conditions per place. [2024-06-27 23:10:04,924 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 72 selfloop transitions, 49 changer transitions 0/130 dead transitions. [2024-06-27 23:10:04,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 130 transitions, 1011 flow [2024-06-27 23:10:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:10:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:10:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-27 23:10:04,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256064690026954 [2024-06-27 23:10:04,925 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 526 flow. Second operand 7 states and 195 transitions. [2024-06-27 23:10:04,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 130 transitions, 1011 flow [2024-06-27 23:10:04,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 130 transitions, 908 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 23:10:04,943 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 739 flow [2024-06-27 23:10:04,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=739, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2024-06-27 23:10:04,945 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-27 23:10:04,945 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 739 flow [2024-06-27 23:10:04,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:04,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:04,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:04,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:10:04,946 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)] === [2024-06-27 23:10:04,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:04,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1355103285, now seen corresponding path program 1 times [2024-06-27 23:10:04,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:04,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10802359] [2024-06-27 23:10:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:04,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:06,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:06,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10802359] [2024-06-27 23:10:06,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10802359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:06,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:06,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:10:06,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769333618] [2024-06-27 23:10:06,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:06,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:10:06,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:06,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:10:06,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:10:06,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:06,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 739 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:06,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:06,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:06,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:08,201 INFO L124 PetriNetUnfolderBase]: 7236/10197 cut-off events. [2024-06-27 23:10:08,201 INFO L125 PetriNetUnfolderBase]: For 36516/36556 co-relation queries the response was YES. [2024-06-27 23:10:08,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36032 conditions, 10197 events. 7236/10197 cut-off events. For 36516/36556 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 57487 event pairs, 3514 based on Foata normal form. 3/10182 useless extension candidates. Maximal degree in co-relation 35998. Up to 9773 conditions per place. [2024-06-27 23:10:08,259 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 100 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-06-27 23:10:08,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 142 transitions, 1177 flow [2024-06-27 23:10:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:10:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:10:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 23:10:08,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-06-27 23:10:08,260 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 739 flow. Second operand 8 states and 210 transitions. [2024-06-27 23:10:08,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 142 transitions, 1177 flow [2024-06-27 23:10:08,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 142 transitions, 1106 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 23:10:08,281 INFO L231 Difference]: Finished difference. Result has 89 places, 109 transitions, 822 flow [2024-06-27 23:10:08,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=822, PETRI_PLACES=89, PETRI_TRANSITIONS=109} [2024-06-27 23:10:08,281 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-27 23:10:08,281 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 109 transitions, 822 flow [2024-06-27 23:10:08,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:08,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:08,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:08,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:10:08,282 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)] === [2024-06-27 23:10:08,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1184405505, now seen corresponding path program 2 times [2024-06-27 23:10:08,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:08,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086778808] [2024-06-27 23:10:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:09,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:09,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086778808] [2024-06-27 23:10:09,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086778808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:09,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:09,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:10:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431176641] [2024-06-27 23:10:09,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:09,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:10:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:10:09,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:10:09,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:09,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 109 transitions, 822 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:09,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:09,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:09,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:11,411 INFO L124 PetriNetUnfolderBase]: 7289/10249 cut-off events. [2024-06-27 23:10:11,411 INFO L125 PetriNetUnfolderBase]: For 47888/47940 co-relation queries the response was YES. [2024-06-27 23:10:11,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38981 conditions, 10249 events. 7289/10249 cut-off events. For 47888/47940 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 57438 event pairs, 3461 based on Foata normal form. 39/10257 useless extension candidates. Maximal degree in co-relation 38945. Up to 9687 conditions per place. [2024-06-27 23:10:11,471 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 86 selfloop transitions, 65 changer transitions 0/160 dead transitions. [2024-06-27 23:10:11,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 160 transitions, 1468 flow [2024-06-27 23:10:11,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:10:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:10:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-27 23:10:11,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5498652291105122 [2024-06-27 23:10:11,473 INFO L175 Difference]: Start difference. First operand has 89 places, 109 transitions, 822 flow. Second operand 7 states and 204 transitions. [2024-06-27 23:10:11,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 160 transitions, 1468 flow [2024-06-27 23:10:11,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 160 transitions, 1393 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 23:10:11,495 INFO L231 Difference]: Finished difference. Result has 93 places, 121 transitions, 1026 flow [2024-06-27 23:10:11,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1026, PETRI_PLACES=93, PETRI_TRANSITIONS=121} [2024-06-27 23:10:11,495 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2024-06-27 23:10:11,496 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 121 transitions, 1026 flow [2024-06-27 23:10:11,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:11,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:11,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:11,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:10:11,496 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)] === [2024-06-27 23:10:11,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:11,497 INFO L85 PathProgramCache]: Analyzing trace with hash 463345419, now seen corresponding path program 3 times [2024-06-27 23:10:11,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:11,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855694396] [2024-06-27 23:10:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:11,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:13,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:13,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855694396] [2024-06-27 23:10:13,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855694396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:13,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:13,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:10:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072271181] [2024-06-27 23:10:13,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:13,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:10:13,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:13,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:10:13,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:10:13,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:13,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 121 transitions, 1026 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:13,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:13,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:13,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:14,751 INFO L124 PetriNetUnfolderBase]: 7280/10271 cut-off events. [2024-06-27 23:10:14,752 INFO L125 PetriNetUnfolderBase]: For 62551/62619 co-relation queries the response was YES. [2024-06-27 23:10:14,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41631 conditions, 10271 events. 7280/10271 cut-off events. For 62551/62619 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 57895 event pairs, 3454 based on Foata normal form. 35/10279 useless extension candidates. Maximal degree in co-relation 41593. Up to 9678 conditions per place. [2024-06-27 23:10:14,818 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 82 selfloop transitions, 66 changer transitions 0/157 dead transitions. [2024-06-27 23:10:14,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 157 transitions, 1496 flow [2024-06-27 23:10:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:10:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:10:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-27 23:10:14,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5336927223719676 [2024-06-27 23:10:14,820 INFO L175 Difference]: Start difference. First operand has 93 places, 121 transitions, 1026 flow. Second operand 7 states and 198 transitions. [2024-06-27 23:10:14,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 157 transitions, 1496 flow [2024-06-27 23:10:14,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 157 transitions, 1451 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-27 23:10:14,853 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 1127 flow [2024-06-27 23:10:14,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1127, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-27 23:10:14,853 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-27 23:10:14,854 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 1127 flow [2024-06-27 23:10:14,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:14,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:14,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:14,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:10:14,854 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)] === [2024-06-27 23:10:14,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:14,855 INFO L85 PathProgramCache]: Analyzing trace with hash -174976195, now seen corresponding path program 4 times [2024-06-27 23:10:14,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:14,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51797732] [2024-06-27 23:10:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:15,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:15,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51797732] [2024-06-27 23:10:15,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51797732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:15,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:15,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:10:15,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246520699] [2024-06-27 23:10:15,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:15,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:10:15,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:15,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:10:15,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:10:16,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:16,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 1127 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:16,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:16,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:16,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:17,612 INFO L124 PetriNetUnfolderBase]: 7435/10533 cut-off events. [2024-06-27 23:10:17,612 INFO L125 PetriNetUnfolderBase]: For 72430/72524 co-relation queries the response was YES. [2024-06-27 23:10:17,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43969 conditions, 10533 events. 7435/10533 cut-off events. For 72430/72524 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 59621 event pairs, 3438 based on Foata normal form. 25/10543 useless extension candidates. Maximal degree in co-relation 43927. Up to 9973 conditions per place. [2024-06-27 23:10:17,676 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 135 selfloop transitions, 66 changer transitions 0/210 dead transitions. [2024-06-27 23:10:17,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 210 transitions, 2135 flow [2024-06-27 23:10:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:10:17,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:10:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2024-06-27 23:10:17,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207547169811321 [2024-06-27 23:10:17,679 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 1127 flow. Second operand 10 states and 276 transitions. [2024-06-27 23:10:17,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 210 transitions, 2135 flow [2024-06-27 23:10:17,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 210 transitions, 1985 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:10:17,727 INFO L231 Difference]: Finished difference. Result has 106 places, 153 transitions, 1499 flow [2024-06-27 23:10:17,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1499, PETRI_PLACES=106, PETRI_TRANSITIONS=153} [2024-06-27 23:10:17,727 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-27 23:10:17,728 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 153 transitions, 1499 flow [2024-06-27 23:10:17,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:17,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:17,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:17,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:10:17,728 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)] === [2024-06-27 23:10:17,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:17,729 INFO L85 PathProgramCache]: Analyzing trace with hash -696193667, now seen corresponding path program 5 times [2024-06-27 23:10:17,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:17,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950889837] [2024-06-27 23:10:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:17,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:18,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:18,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950889837] [2024-06-27 23:10:18,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950889837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:18,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:18,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:10:18,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745627400] [2024-06-27 23:10:18,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:18,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:10:18,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:18,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:10:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:10:19,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:19,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 153 transitions, 1499 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:19,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:19,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:19,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:20,619 INFO L124 PetriNetUnfolderBase]: 7521/10687 cut-off events. [2024-06-27 23:10:20,619 INFO L125 PetriNetUnfolderBase]: For 82427/82519 co-relation queries the response was YES. [2024-06-27 23:10:20,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45744 conditions, 10687 events. 7521/10687 cut-off events. For 82427/82519 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 60709 event pairs, 3438 based on Foata normal form. 11/10686 useless extension candidates. Maximal degree in co-relation 45699. Up to 10097 conditions per place. [2024-06-27 23:10:20,698 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 138 selfloop transitions, 77 changer transitions 0/224 dead transitions. [2024-06-27 23:10:20,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 224 transitions, 2415 flow [2024-06-27 23:10:20,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:10:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:10:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-27 23:10:20,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212264150943396 [2024-06-27 23:10:20,704 INFO L175 Difference]: Start difference. First operand has 106 places, 153 transitions, 1499 flow. Second operand 8 states and 221 transitions. [2024-06-27 23:10:20,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 224 transitions, 2415 flow [2024-06-27 23:10:20,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 224 transitions, 2233 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-27 23:10:20,787 INFO L231 Difference]: Finished difference. Result has 110 places, 185 transitions, 1899 flow [2024-06-27 23:10:20,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1899, PETRI_PLACES=110, PETRI_TRANSITIONS=185} [2024-06-27 23:10:20,787 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2024-06-27 23:10:20,787 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 185 transitions, 1899 flow [2024-06-27 23:10:20,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:20,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:20,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:20,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:10:20,788 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)] === [2024-06-27 23:10:20,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash -696073697, now seen corresponding path program 6 times [2024-06-27 23:10:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:20,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974506826] [2024-06-27 23:10:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:20,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:22,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:22,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974506826] [2024-06-27 23:10:22,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974506826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:22,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:22,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:10:22,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168889372] [2024-06-27 23:10:22,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:22,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:10:22,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:22,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:10:22,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:10:22,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:22,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 185 transitions, 1899 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:22,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:22,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:22,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:23,830 INFO L124 PetriNetUnfolderBase]: 7566/10740 cut-off events. [2024-06-27 23:10:23,830 INFO L125 PetriNetUnfolderBase]: For 91611/91721 co-relation queries the response was YES. [2024-06-27 23:10:23,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47083 conditions, 10740 events. 7566/10740 cut-off events. For 91611/91721 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 60900 event pairs, 3455 based on Foata normal form. 63/10787 useless extension candidates. Maximal degree in co-relation 47036. Up to 9952 conditions per place. [2024-06-27 23:10:23,906 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 88 selfloop transitions, 142 changer transitions 0/239 dead transitions. [2024-06-27 23:10:23,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 239 transitions, 2645 flow [2024-06-27 23:10:23,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:10:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:10:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-27 23:10:23,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-27 23:10:23,908 INFO L175 Difference]: Start difference. First operand has 110 places, 185 transitions, 1899 flow. Second operand 8 states and 224 transitions. [2024-06-27 23:10:23,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 239 transitions, 2645 flow [2024-06-27 23:10:23,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 239 transitions, 2507 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-27 23:10:23,991 INFO L231 Difference]: Finished difference. Result has 116 places, 201 transitions, 2244 flow [2024-06-27 23:10:23,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2244, PETRI_PLACES=116, PETRI_TRANSITIONS=201} [2024-06-27 23:10:23,992 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2024-06-27 23:10:23,992 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 201 transitions, 2244 flow [2024-06-27 23:10:23,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-27 23:10:23,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:23,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:23,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:10:23,992 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)] === [2024-06-27 23:10:23,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash 471635253, now seen corresponding path program 1 times [2024-06-27 23:10:23,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:23,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041826568] [2024-06-27 23:10:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:23,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:25,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:25,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041826568] [2024-06-27 23:10:25,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041826568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:25,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:25,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:10:25,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218526814] [2024-06-27 23:10:25,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:25,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:10:25,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:25,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:10:25,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:10:25,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:10:25,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 201 transitions, 2244 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:25,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:25,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:10:25,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:27,488 INFO L124 PetriNetUnfolderBase]: 9832/13902 cut-off events. [2024-06-27 23:10:27,488 INFO L125 PetriNetUnfolderBase]: For 130330/130330 co-relation queries the response was YES. [2024-06-27 23:10:27,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60766 conditions, 13902 events. 9832/13902 cut-off events. For 130330/130330 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 78175 event pairs, 4470 based on Foata normal form. 6/13891 useless extension candidates. Maximal degree in co-relation 60717. Up to 13273 conditions per place. [2024-06-27 23:10:27,585 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 212 selfloop transitions, 19 changer transitions 0/239 dead transitions. [2024-06-27 23:10:27,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 239 transitions, 2933 flow [2024-06-27 23:10:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:10:27,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:10:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 23:10:27,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46462264150943394 [2024-06-27 23:10:27,586 INFO L175 Difference]: Start difference. First operand has 116 places, 201 transitions, 2244 flow. Second operand 8 states and 197 transitions. [2024-06-27 23:10:27,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 239 transitions, 2933 flow [2024-06-27 23:10:27,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 239 transitions, 2577 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 23:10:27,688 INFO L231 Difference]: Finished difference. Result has 119 places, 208 transitions, 2048 flow [2024-06-27 23:10:27,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2048, PETRI_PLACES=119, PETRI_TRANSITIONS=208} [2024-06-27 23:10:27,688 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-27 23:10:27,688 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 208 transitions, 2048 flow [2024-06-27 23:10:27,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:27,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:27,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:27,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:10:27,689 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:10:27,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:27,689 INFO L85 PathProgramCache]: Analyzing trace with hash 325714881, now seen corresponding path program 1 times [2024-06-27 23:10:27,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:27,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645024300] [2024-06-27 23:10:27,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:27,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:28,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:28,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645024300] [2024-06-27 23:10:28,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645024300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:28,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:28,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:10:28,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499555972] [2024-06-27 23:10:28,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:28,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:10:28,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:28,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:10:28,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:10:28,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:28,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 208 transitions, 2048 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:28,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:28,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:28,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:30,468 INFO L124 PetriNetUnfolderBase]: 9661/13852 cut-off events. [2024-06-27 23:10:30,468 INFO L125 PetriNetUnfolderBase]: For 146466/146474 co-relation queries the response was YES. [2024-06-27 23:10:30,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62506 conditions, 13852 events. 9661/13852 cut-off events. For 146466/146474 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 80094 event pairs, 4792 based on Foata normal form. 10/13687 useless extension candidates. Maximal degree in co-relation 62457. Up to 13147 conditions per place. [2024-06-27 23:10:30,562 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 194 selfloop transitions, 12 changer transitions 0/225 dead transitions. [2024-06-27 23:10:30,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 225 transitions, 2548 flow [2024-06-27 23:10:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:10:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:10:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-27 23:10:30,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018867924528302 [2024-06-27 23:10:30,563 INFO L175 Difference]: Start difference. First operand has 119 places, 208 transitions, 2048 flow. Second operand 5 states and 133 transitions. [2024-06-27 23:10:30,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 225 transitions, 2548 flow [2024-06-27 23:10:30,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 225 transitions, 2470 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 23:10:30,699 INFO L231 Difference]: Finished difference. Result has 118 places, 212 transitions, 2049 flow [2024-06-27 23:10:30,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2049, PETRI_PLACES=118, PETRI_TRANSITIONS=212} [2024-06-27 23:10:30,699 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-27 23:10:30,700 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 212 transitions, 2049 flow [2024-06-27 23:10:30,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:30,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:30,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:30,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:10:30,700 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:10:30,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:30,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1507228129, now seen corresponding path program 1 times [2024-06-27 23:10:30,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:30,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517836200] [2024-06-27 23:10:30,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:30,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:31,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:31,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517836200] [2024-06-27 23:10:31,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517836200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:31,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:31,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:10:31,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767285607] [2024-06-27 23:10:31,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:31,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:10:31,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:31,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:10:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:10:31,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:31,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 212 transitions, 2049 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:31,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:31,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:31,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:33,822 INFO L124 PetriNetUnfolderBase]: 9684/14067 cut-off events. [2024-06-27 23:10:33,822 INFO L125 PetriNetUnfolderBase]: For 163920/163928 co-relation queries the response was YES. [2024-06-27 23:10:33,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65683 conditions, 14067 events. 9684/14067 cut-off events. For 163920/163928 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 82798 event pairs, 4756 based on Foata normal form. 12/14026 useless extension candidates. Maximal degree in co-relation 65634. Up to 13111 conditions per place. [2024-06-27 23:10:33,937 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 199 selfloop transitions, 16 changer transitions 0/234 dead transitions. [2024-06-27 23:10:33,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 234 transitions, 2591 flow [2024-06-27 23:10:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:10:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:10:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-27 23:10:33,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937106918238994 [2024-06-27 23:10:33,938 INFO L175 Difference]: Start difference. First operand has 118 places, 212 transitions, 2049 flow. Second operand 6 states and 157 transitions. [2024-06-27 23:10:33,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 234 transitions, 2591 flow [2024-06-27 23:10:34,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 234 transitions, 2560 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 23:10:34,083 INFO L231 Difference]: Finished difference. Result has 121 places, 216 transitions, 2111 flow [2024-06-27 23:10:34,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2111, PETRI_PLACES=121, PETRI_TRANSITIONS=216} [2024-06-27 23:10:34,084 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 65 predicate places. [2024-06-27 23:10:34,084 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 216 transitions, 2111 flow [2024-06-27 23:10:34,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:34,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:34,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:34,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:10:34,085 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:10:34,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:34,085 INFO L85 PathProgramCache]: Analyzing trace with hash -67886626, now seen corresponding path program 1 times [2024-06-27 23:10:34,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:34,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951054472] [2024-06-27 23:10:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:34,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:35,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:35,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951054472] [2024-06-27 23:10:35,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951054472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:35,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:35,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:10:35,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852071696] [2024-06-27 23:10:35,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:35,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:10:35,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:35,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:10:35,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:10:35,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:35,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 216 transitions, 2111 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:35,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:35,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:35,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:38,253 INFO L124 PetriNetUnfolderBase]: 10725/15177 cut-off events. [2024-06-27 23:10:38,253 INFO L125 PetriNetUnfolderBase]: For 225626/225831 co-relation queries the response was YES. [2024-06-27 23:10:38,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77862 conditions, 15177 events. 10725/15177 cut-off events. For 225626/225831 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 88898 event pairs, 4091 based on Foata normal form. 52/15109 useless extension candidates. Maximal degree in co-relation 77810. Up to 14138 conditions per place. [2024-06-27 23:10:38,385 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 174 selfloop transitions, 75 changer transitions 0/260 dead transitions. [2024-06-27 23:10:38,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 260 transitions, 2825 flow [2024-06-27 23:10:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:10:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:10:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-27 23:10:38,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989517819706499 [2024-06-27 23:10:38,387 INFO L175 Difference]: Start difference. First operand has 121 places, 216 transitions, 2111 flow. Second operand 9 states and 238 transitions. [2024-06-27 23:10:38,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 260 transitions, 2825 flow [2024-06-27 23:10:38,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 260 transitions, 2770 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 23:10:38,557 INFO L231 Difference]: Finished difference. Result has 126 places, 218 transitions, 2270 flow [2024-06-27 23:10:38,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2270, PETRI_PLACES=126, PETRI_TRANSITIONS=218} [2024-06-27 23:10:38,557 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-06-27 23:10:38,558 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 218 transitions, 2270 flow [2024-06-27 23:10:38,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:38,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:38,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:38,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:10:38,558 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)] === [2024-06-27 23:10:38,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:38,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1202701150, now seen corresponding path program 2 times [2024-06-27 23:10:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:38,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52163159] [2024-06-27 23:10:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:38,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:40,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:40,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52163159] [2024-06-27 23:10:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52163159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:40,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:40,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:10:40,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704846478] [2024-06-27 23:10:40,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:40,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:10:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:10:40,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:10:40,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:40,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 218 transitions, 2270 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:40,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:40,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:40,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:43,138 INFO L124 PetriNetUnfolderBase]: 10939/15464 cut-off events. [2024-06-27 23:10:43,138 INFO L125 PetriNetUnfolderBase]: For 256853/257034 co-relation queries the response was YES. [2024-06-27 23:10:43,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82042 conditions, 15464 events. 10939/15464 cut-off events. For 256853/257034 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 90161 event pairs, 4413 based on Foata normal form. 46/15380 useless extension candidates. Maximal degree in co-relation 81989. Up to 14278 conditions per place. [2024-06-27 23:10:43,270 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 185 selfloop transitions, 80 changer transitions 0/276 dead transitions. [2024-06-27 23:10:43,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 276 transitions, 3080 flow [2024-06-27 23:10:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:10:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:10:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-27 23:10:43,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037735849056604 [2024-06-27 23:10:43,273 INFO L175 Difference]: Start difference. First operand has 126 places, 218 transitions, 2270 flow. Second operand 10 states and 267 transitions. [2024-06-27 23:10:43,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 276 transitions, 3080 flow [2024-06-27 23:10:43,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 276 transitions, 2928 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 23:10:43,464 INFO L231 Difference]: Finished difference. Result has 130 places, 223 transitions, 2374 flow [2024-06-27 23:10:43,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2374, PETRI_PLACES=130, PETRI_TRANSITIONS=223} [2024-06-27 23:10:43,465 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2024-06-27 23:10:43,465 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 223 transitions, 2374 flow [2024-06-27 23:10:43,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:43,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:43,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:43,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:10:43,465 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)] === [2024-06-27 23:10:43,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:43,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1320849280, now seen corresponding path program 3 times [2024-06-27 23:10:43,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:43,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973812080] [2024-06-27 23:10:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:43,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:45,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:45,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973812080] [2024-06-27 23:10:45,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973812080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:45,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:45,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:10:45,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591590009] [2024-06-27 23:10:45,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:45,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:10:45,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:10:45,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:10:45,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:45,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 223 transitions, 2374 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:45,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:45,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:45,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:47,788 INFO L124 PetriNetUnfolderBase]: 10988/15577 cut-off events. [2024-06-27 23:10:47,788 INFO L125 PetriNetUnfolderBase]: For 284524/284699 co-relation queries the response was YES. [2024-06-27 23:10:47,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84845 conditions, 15577 events. 10988/15577 cut-off events. For 284524/284699 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 91525 event pairs, 4527 based on Foata normal form. 98/15589 useless extension candidates. Maximal degree in co-relation 84790. Up to 14317 conditions per place. [2024-06-27 23:10:47,913 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 123 selfloop transitions, 136 changer transitions 0/270 dead transitions. [2024-06-27 23:10:47,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 270 transitions, 3154 flow [2024-06-27 23:10:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:10:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:10:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-27 23:10:47,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052410901467506 [2024-06-27 23:10:47,915 INFO L175 Difference]: Start difference. First operand has 130 places, 223 transitions, 2374 flow. Second operand 9 states and 241 transitions. [2024-06-27 23:10:47,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 270 transitions, 3154 flow [2024-06-27 23:10:48,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 270 transitions, 2994 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:10:48,093 INFO L231 Difference]: Finished difference. Result has 132 places, 225 transitions, 2552 flow [2024-06-27 23:10:48,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2214, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2552, PETRI_PLACES=132, PETRI_TRANSITIONS=225} [2024-06-27 23:10:48,094 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-06-27 23:10:48,094 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 225 transitions, 2552 flow [2024-06-27 23:10:48,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:48,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:48,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:48,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:10:48,095 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)] === [2024-06-27 23:10:48,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:48,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1294557892, now seen corresponding path program 1 times [2024-06-27 23:10:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:48,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571251304] [2024-06-27 23:10:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:48,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:49,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:49,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571251304] [2024-06-27 23:10:49,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571251304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:49,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:49,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:10:49,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963948314] [2024-06-27 23:10:49,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:49,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:10:49,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:49,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:10:49,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:10:49,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:10:49,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 225 transitions, 2552 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:49,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:49,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:10:49,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:52,276 INFO L124 PetriNetUnfolderBase]: 11671/16461 cut-off events. [2024-06-27 23:10:52,276 INFO L125 PetriNetUnfolderBase]: For 318035/318052 co-relation queries the response was YES. [2024-06-27 23:10:52,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89751 conditions, 16461 events. 11671/16461 cut-off events. For 318035/318052 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 93906 event pairs, 4761 based on Foata normal form. 16/16401 useless extension candidates. Maximal degree in co-relation 89695. Up to 15511 conditions per place. [2024-06-27 23:10:52,445 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 208 selfloop transitions, 63 changer transitions 0/280 dead transitions. [2024-06-27 23:10:52,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 280 transitions, 3462 flow [2024-06-27 23:10:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:10:52,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:10:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 23:10:52,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480083857442348 [2024-06-27 23:10:52,447 INFO L175 Difference]: Start difference. First operand has 132 places, 225 transitions, 2552 flow. Second operand 9 states and 229 transitions. [2024-06-27 23:10:52,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 280 transitions, 3462 flow [2024-06-27 23:10:52,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 280 transitions, 3050 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:10:52,847 INFO L231 Difference]: Finished difference. Result has 134 places, 238 transitions, 2480 flow [2024-06-27 23:10:52,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2480, PETRI_PLACES=134, PETRI_TRANSITIONS=238} [2024-06-27 23:10:52,847 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-27 23:10:52,847 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 238 transitions, 2480 flow [2024-06-27 23:10:52,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:52,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:52,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:52,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:10:52,848 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:10:52,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:52,848 INFO L85 PathProgramCache]: Analyzing trace with hash -532008544, now seen corresponding path program 1 times [2024-06-27 23:10:52,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:52,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741530203] [2024-06-27 23:10:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:52,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:53,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:53,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741530203] [2024-06-27 23:10:53,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741530203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:53,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:53,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:10:53,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838215144] [2024-06-27 23:10:53,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:53,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:10:53,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:53,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:10:53,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:10:54,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:10:54,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 238 transitions, 2480 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) [2024-06-27 23:10:54,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:54,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:10:54,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:56,337 INFO L124 PetriNetUnfolderBase]: 11622/16400 cut-off events. [2024-06-27 23:10:56,338 INFO L125 PetriNetUnfolderBase]: For 335641/335649 co-relation queries the response was YES. [2024-06-27 23:10:56,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91242 conditions, 16400 events. 11622/16400 cut-off events. For 335641/335649 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 93769 event pairs, 5132 based on Foata normal form. 9/16348 useless extension candidates. Maximal degree in co-relation 91185. Up to 15587 conditions per place. [2024-06-27 23:10:56,491 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 195 selfloop transitions, 58 changer transitions 0/275 dead transitions. [2024-06-27 23:10:56,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 275 transitions, 3401 flow [2024-06-27 23:10:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:10:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:10:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-06-27 23:10:56,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125786163522013 [2024-06-27 23:10:56,494 INFO L175 Difference]: Start difference. First operand has 134 places, 238 transitions, 2480 flow. Second operand 6 states and 163 transitions. [2024-06-27 23:10:56,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 275 transitions, 3401 flow [2024-06-27 23:10:56,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 275 transitions, 3142 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 23:10:56,778 INFO L231 Difference]: Finished difference. Result has 132 places, 250 transitions, 2523 flow [2024-06-27 23:10:56,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2523, PETRI_PLACES=132, PETRI_TRANSITIONS=250} [2024-06-27 23:10:56,779 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-06-27 23:10:56,779 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 250 transitions, 2523 flow [2024-06-27 23:10:56,779 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) [2024-06-27 23:10:56,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:56,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:56,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:10:56,780 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)] === [2024-06-27 23:10:56,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1527896576, now seen corresponding path program 4 times [2024-06-27 23:10:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:56,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051793963] [2024-06-27 23:10:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:56,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:58,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:58,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051793963] [2024-06-27 23:10:58,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051793963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:58,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:58,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:10:58,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111475509] [2024-06-27 23:10:58,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:58,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:10:58,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:10:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:10:58,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:10:58,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 250 transitions, 2523 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:10:58,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:58,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:10:58,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:01,481 INFO L124 PetriNetUnfolderBase]: 11271/16108 cut-off events. [2024-06-27 23:11:01,481 INFO L125 PetriNetUnfolderBase]: For 386251/386365 co-relation queries the response was YES. [2024-06-27 23:11:01,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95266 conditions, 16108 events. 11271/16108 cut-off events. For 386251/386365 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 95561 event pairs, 4463 based on Foata normal form. 48/16033 useless extension candidates. Maximal degree in co-relation 95208. Up to 14619 conditions per place. [2024-06-27 23:11:01,597 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 135 selfloop transitions, 145 changer transitions 0/295 dead transitions. [2024-06-27 23:11:01,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 295 transitions, 3347 flow [2024-06-27 23:11:01,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:11:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:11:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-27 23:11:01,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989517819706499 [2024-06-27 23:11:01,598 INFO L175 Difference]: Start difference. First operand has 132 places, 250 transitions, 2523 flow. Second operand 9 states and 238 transitions. [2024-06-27 23:11:01,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 295 transitions, 3347 flow [2024-06-27 23:11:01,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 295 transitions, 3320 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 23:11:01,844 INFO L231 Difference]: Finished difference. Result has 140 places, 252 transitions, 2860 flow [2024-06-27 23:11:01,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2860, PETRI_PLACES=140, PETRI_TRANSITIONS=252} [2024-06-27 23:11:01,845 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2024-06-27 23:11:01,845 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 252 transitions, 2860 flow [2024-06-27 23:11:01,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:01,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:01,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:01,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:11:01,846 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)] === [2024-06-27 23:11:01,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1299810728, now seen corresponding path program 2 times [2024-06-27 23:11:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:01,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247785953] [2024-06-27 23:11:01,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:01,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:03,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:03,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247785953] [2024-06-27 23:11:03,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247785953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:03,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:03,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:11:03,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966633157] [2024-06-27 23:11:03,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:03,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:11:03,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:03,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:11:03,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:11:03,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:11:03,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 252 transitions, 2860 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:03,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:03,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:11:03,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:06,211 INFO L124 PetriNetUnfolderBase]: 12024/16980 cut-off events. [2024-06-27 23:11:06,212 INFO L125 PetriNetUnfolderBase]: For 424189/424206 co-relation queries the response was YES. [2024-06-27 23:11:06,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101925 conditions, 16980 events. 12024/16980 cut-off events. For 424189/424206 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 97269 event pairs, 4774 based on Foata normal form. 18/16923 useless extension candidates. Maximal degree in co-relation 101864. Up to 15966 conditions per place. [2024-06-27 23:11:06,382 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 220 selfloop transitions, 82 changer transitions 0/314 dead transitions. [2024-06-27 23:11:06,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 314 transitions, 3918 flow [2024-06-27 23:11:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:11:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:11:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 23:11:06,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47379454926624737 [2024-06-27 23:11:06,384 INFO L175 Difference]: Start difference. First operand has 140 places, 252 transitions, 2860 flow. Second operand 9 states and 226 transitions. [2024-06-27 23:11:06,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 314 transitions, 3918 flow [2024-06-27 23:11:06,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 314 transitions, 3507 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 23:11:06,799 INFO L231 Difference]: Finished difference. Result has 142 places, 273 transitions, 2923 flow [2024-06-27 23:11:06,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2923, PETRI_PLACES=142, PETRI_TRANSITIONS=273} [2024-06-27 23:11:06,799 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 86 predicate places. [2024-06-27 23:11:06,799 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 273 transitions, 2923 flow [2024-06-27 23:11:06,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:06,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:06,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:06,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:11:06,800 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)] === [2024-06-27 23:11:06,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:06,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1291239848, now seen corresponding path program 3 times [2024-06-27 23:11:06,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:06,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769766229] [2024-06-27 23:11:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:06,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:08,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:08,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769766229] [2024-06-27 23:11:08,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769766229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:08,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:08,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:11:08,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887131385] [2024-06-27 23:11:08,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:08,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:11:08,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:08,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:11:08,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:11:08,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:11:08,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 273 transitions, 2923 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:08,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:08,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:11:08,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:11,426 INFO L124 PetriNetUnfolderBase]: 12060/17048 cut-off events. [2024-06-27 23:11:11,426 INFO L125 PetriNetUnfolderBase]: For 457818/457837 co-relation queries the response was YES. [2024-06-27 23:11:11,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105105 conditions, 17048 events. 12060/17048 cut-off events. For 457818/457837 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 97942 event pairs, 4491 based on Foata normal form. 20/16993 useless extension candidates. Maximal degree in co-relation 105043. Up to 15855 conditions per place. [2024-06-27 23:11:11,921 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 218 selfloop transitions, 93 changer transitions 0/323 dead transitions. [2024-06-27 23:11:11,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 323 transitions, 4011 flow [2024-06-27 23:11:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:11:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:11:11,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 23:11:11,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48218029350104824 [2024-06-27 23:11:11,922 INFO L175 Difference]: Start difference. First operand has 142 places, 273 transitions, 2923 flow. Second operand 9 states and 230 transitions. [2024-06-27 23:11:11,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 323 transitions, 4011 flow [2024-06-27 23:11:12,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 323 transitions, 3853 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-27 23:11:12,578 INFO L231 Difference]: Finished difference. Result has 147 places, 279 transitions, 3115 flow [2024-06-27 23:11:12,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3115, PETRI_PLACES=147, PETRI_TRANSITIONS=279} [2024-06-27 23:11:12,579 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 91 predicate places. [2024-06-27 23:11:12,579 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 279 transitions, 3115 flow [2024-06-27 23:11:12,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:12,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:12,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:12,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:11:12,580 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)] === [2024-06-27 23:11:12,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:12,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1527711878, now seen corresponding path program 4 times [2024-06-27 23:11:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:12,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820960273] [2024-06-27 23:11:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:12,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:14,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:14,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820960273] [2024-06-27 23:11:14,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820960273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:14,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:14,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:11:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455999297] [2024-06-27 23:11:14,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:14,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:11:14,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:14,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:11:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:11:14,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:11:14,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 279 transitions, 3115 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:14,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:14,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:11:14,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:17,401 INFO L124 PetriNetUnfolderBase]: 12096/17097 cut-off events. [2024-06-27 23:11:17,401 INFO L125 PetriNetUnfolderBase]: For 493581/493598 co-relation queries the response was YES. [2024-06-27 23:11:17,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106639 conditions, 17097 events. 12096/17097 cut-off events. For 493581/493598 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 98129 event pairs, 4780 based on Foata normal form. 18/17040 useless extension candidates. Maximal degree in co-relation 106576. Up to 16070 conditions per place. [2024-06-27 23:11:17,534 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 230 selfloop transitions, 81 changer transitions 0/323 dead transitions. [2024-06-27 23:11:17,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 323 transitions, 4010 flow [2024-06-27 23:11:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:11:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:11:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 23:11:17,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758909853249476 [2024-06-27 23:11:17,536 INFO L175 Difference]: Start difference. First operand has 147 places, 279 transitions, 3115 flow. Second operand 9 states and 227 transitions. [2024-06-27 23:11:17,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 323 transitions, 4010 flow [2024-06-27 23:11:17,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 323 transitions, 3828 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 23:11:17,976 INFO L231 Difference]: Finished difference. Result has 152 places, 283 transitions, 3222 flow [2024-06-27 23:11:17,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3222, PETRI_PLACES=152, PETRI_TRANSITIONS=283} [2024-06-27 23:11:17,977 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-27 23:11:17,977 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 283 transitions, 3222 flow [2024-06-27 23:11:17,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:17,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:17,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:17,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:11:17,978 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:11:17,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash -520580704, now seen corresponding path program 2 times [2024-06-27 23:11:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:17,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433061604] [2024-06-27 23:11:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:19,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:19,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433061604] [2024-06-27 23:11:19,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433061604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:19,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:19,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:11:19,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336507568] [2024-06-27 23:11:19,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:19,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:11:19,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:11:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:11:19,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-27 23:11:19,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 283 transitions, 3222 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) [2024-06-27 23:11:19,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:19,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-27 23:11:19,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:22,266 INFO L124 PetriNetUnfolderBase]: 11942/16937 cut-off events. [2024-06-27 23:11:22,266 INFO L125 PetriNetUnfolderBase]: For 509619/509623 co-relation queries the response was YES. [2024-06-27 23:11:22,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104890 conditions, 16937 events. 11942/16937 cut-off events. For 509619/509623 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 97942 event pairs, 5198 based on Foata normal form. 6/16885 useless extension candidates. Maximal degree in co-relation 104824. Up to 16013 conditions per place. [2024-06-27 23:11:22,535 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 209 selfloop transitions, 62 changer transitions 0/302 dead transitions. [2024-06-27 23:11:22,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 302 transitions, 3936 flow [2024-06-27 23:11:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:11:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:11:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-27 23:11:22,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-06-27 23:11:22,536 INFO L175 Difference]: Start difference. First operand has 152 places, 283 transitions, 3222 flow. Second operand 6 states and 156 transitions. [2024-06-27 23:11:22,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 302 transitions, 3936 flow [2024-06-27 23:11:22,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 302 transitions, 3689 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 23:11:22,916 INFO L231 Difference]: Finished difference. Result has 152 places, 283 transitions, 3110 flow [2024-06-27 23:11:22,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2975, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3110, PETRI_PLACES=152, PETRI_TRANSITIONS=283} [2024-06-27 23:11:22,917 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-27 23:11:22,917 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 283 transitions, 3110 flow [2024-06-27 23:11:22,917 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) [2024-06-27 23:11:22,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:22,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:22,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:11:22,918 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:11:22,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:22,918 INFO L85 PathProgramCache]: Analyzing trace with hash 149631608, now seen corresponding path program 5 times [2024-06-27 23:11:22,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:22,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162933776] [2024-06-27 23:11:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:22,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:24,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:24,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162933776] [2024-06-27 23:11:24,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162933776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:24,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:24,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:11:24,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862552675] [2024-06-27 23:11:24,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:24,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:11:24,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:24,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:11:24,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:11:24,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:11:24,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 283 transitions, 3110 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:24,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:24,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:11:24,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:27,300 INFO L124 PetriNetUnfolderBase]: 11945/17152 cut-off events. [2024-06-27 23:11:27,300 INFO L125 PetriNetUnfolderBase]: For 571491/571623 co-relation queries the response was YES. [2024-06-27 23:11:27,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112062 conditions, 17152 events. 11945/17152 cut-off events. For 571491/571623 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 103222 event pairs, 4522 based on Foata normal form. 70/17119 useless extension candidates. Maximal degree in co-relation 111994. Up to 15408 conditions per place. [2024-06-27 23:11:27,453 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 238 selfloop transitions, 112 changer transitions 0/367 dead transitions. [2024-06-27 23:11:27,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 367 transitions, 4470 flow [2024-06-27 23:11:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 307 transitions. [2024-06-27 23:11:27,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265866209262435 [2024-06-27 23:11:27,455 INFO L175 Difference]: Start difference. First operand has 152 places, 283 transitions, 3110 flow. Second operand 11 states and 307 transitions. [2024-06-27 23:11:27,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 367 transitions, 4470 flow [2024-06-27 23:11:27,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 367 transitions, 4362 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 23:11:27,934 INFO L231 Difference]: Finished difference. Result has 161 places, 297 transitions, 3524 flow [2024-06-27 23:11:27,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3002, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3524, PETRI_PLACES=161, PETRI_TRANSITIONS=297} [2024-06-27 23:11:27,934 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 105 predicate places. [2024-06-27 23:11:27,934 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 297 transitions, 3524 flow [2024-06-27 23:11:27,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:27,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:27,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:27,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:11:27,935 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:11:27,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash 99730778, now seen corresponding path program 6 times [2024-06-27 23:11:27,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:27,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121371504] [2024-06-27 23:11:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:27,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:29,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:29,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121371504] [2024-06-27 23:11:29,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121371504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:29,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:29,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:11:29,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318110319] [2024-06-27 23:11:29,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:29,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:11:29,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:29,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:11:29,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:11:29,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:11:29,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 297 transitions, 3524 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:29,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:29,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:11:29,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:32,535 INFO L124 PetriNetUnfolderBase]: 12151/17464 cut-off events. [2024-06-27 23:11:32,535 INFO L125 PetriNetUnfolderBase]: For 630803/630953 co-relation queries the response was YES. [2024-06-27 23:11:32,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117256 conditions, 17464 events. 12151/17464 cut-off events. For 630803/630953 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 105648 event pairs, 4705 based on Foata normal form. 88/17445 useless extension candidates. Maximal degree in co-relation 117185. Up to 16049 conditions per place. [2024-06-27 23:11:32,711 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 243 selfloop transitions, 102 changer transitions 0/362 dead transitions. [2024-06-27 23:11:32,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 362 transitions, 4572 flow [2024-06-27 23:11:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 299 transitions. [2024-06-27 23:11:32,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128644939965694 [2024-06-27 23:11:32,713 INFO L175 Difference]: Start difference. First operand has 161 places, 297 transitions, 3524 flow. Second operand 11 states and 299 transitions. [2024-06-27 23:11:32,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 362 transitions, 4572 flow [2024-06-27 23:11:33,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 362 transitions, 4397 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 23:11:33,322 INFO L231 Difference]: Finished difference. Result has 165 places, 301 transitions, 3693 flow [2024-06-27 23:11:33,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3693, PETRI_PLACES=165, PETRI_TRANSITIONS=301} [2024-06-27 23:11:33,323 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 109 predicate places. [2024-06-27 23:11:33,323 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 301 transitions, 3693 flow [2024-06-27 23:11:33,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:33,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:33,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:33,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:11:33,324 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:11:33,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash 859215582, now seen corresponding path program 7 times [2024-06-27 23:11:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:33,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703910184] [2024-06-27 23:11:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:34,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:34,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703910184] [2024-06-27 23:11:34,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703910184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:34,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:34,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:11:34,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428859069] [2024-06-27 23:11:34,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:34,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:11:34,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:34,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:11:34,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:11:34,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-06-27 23:11:34,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 301 transitions, 3693 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:34,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:34,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-06-27 23:11:34,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:37,374 INFO L124 PetriNetUnfolderBase]: 9290/14896 cut-off events. [2024-06-27 23:11:37,374 INFO L125 PetriNetUnfolderBase]: For 623404/623944 co-relation queries the response was YES. [2024-06-27 23:11:37,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104592 conditions, 14896 events. 9290/14896 cut-off events. For 623404/623944 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 103842 event pairs, 2747 based on Foata normal form. 122/14597 useless extension candidates. Maximal degree in co-relation 104519. Up to 10857 conditions per place. [2024-06-27 23:11:37,701 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 189 selfloop transitions, 121 changer transitions 0/384 dead transitions. [2024-06-27 23:11:37,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 384 transitions, 5191 flow [2024-06-27 23:11:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:11:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:11:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 309 transitions. [2024-06-27 23:11:37,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830188679245283 [2024-06-27 23:11:37,703 INFO L175 Difference]: Start difference. First operand has 165 places, 301 transitions, 3693 flow. Second operand 10 states and 309 transitions. [2024-06-27 23:11:37,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 384 transitions, 5191 flow [2024-06-27 23:11:38,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 384 transitions, 4963 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 23:11:38,296 INFO L231 Difference]: Finished difference. Result has 168 places, 323 transitions, 4199 flow [2024-06-27 23:11:38,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3465, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4199, PETRI_PLACES=168, PETRI_TRANSITIONS=323} [2024-06-27 23:11:38,297 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 112 predicate places. [2024-06-27 23:11:38,297 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 323 transitions, 4199 flow [2024-06-27 23:11:38,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:38,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:38,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:38,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:11:38,298 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:11:38,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash -637780658, now seen corresponding path program 8 times [2024-06-27 23:11:38,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:38,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351565882] [2024-06-27 23:11:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:38,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:39,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:39,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351565882] [2024-06-27 23:11:39,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351565882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:39,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:39,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:11:39,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858059885] [2024-06-27 23:11:39,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:39,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:11:39,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:39,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:11:39,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:11:39,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 23:11:39,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 323 transitions, 4199 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:39,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:39,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 23:11:39,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:43,631 INFO L124 PetriNetUnfolderBase]: 13977/20323 cut-off events. [2024-06-27 23:11:43,631 INFO L125 PetriNetUnfolderBase]: For 790835/791055 co-relation queries the response was YES. [2024-06-27 23:11:43,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142562 conditions, 20323 events. 13977/20323 cut-off events. For 790835/791055 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 128140 event pairs, 5003 based on Foata normal form. 103/20313 useless extension candidates. Maximal degree in co-relation 142486. Up to 17487 conditions per place. [2024-06-27 23:11:43,848 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 286 selfloop transitions, 127 changer transitions 0/430 dead transitions. [2024-06-27 23:11:43,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 430 transitions, 6323 flow [2024-06-27 23:11:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:11:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:11:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 281 transitions. [2024-06-27 23:11:43,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530188679245283 [2024-06-27 23:11:43,849 INFO L175 Difference]: Start difference. First operand has 168 places, 323 transitions, 4199 flow. Second operand 10 states and 281 transitions. [2024-06-27 23:11:43,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 430 transitions, 6323 flow [2024-06-27 23:11:45,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 430 transitions, 6130 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-27 23:11:45,105 INFO L231 Difference]: Finished difference. Result has 175 places, 364 transitions, 5234 flow [2024-06-27 23:11:45,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4078, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5234, PETRI_PLACES=175, PETRI_TRANSITIONS=364} [2024-06-27 23:11:45,106 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 119 predicate places. [2024-06-27 23:11:45,106 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 364 transitions, 5234 flow [2024-06-27 23:11:45,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:11:45,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:45,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:45,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:11:45,107 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:11:45,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash 972831868, now seen corresponding path program 9 times [2024-06-27 23:11:45,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:45,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545307315] [2024-06-27 23:11:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:45,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat