./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix044.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/mix044.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix044.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix044.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 19:04:11,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:04:11,694 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:04:11,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:04:11,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:04:11,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:04:11,727 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:04:11,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:04:11,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:04:11,730 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:04:11,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:04:11,731 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:04:11,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:04:11,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:04:11,732 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:04:11,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:04:11,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:04:11,732 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:04:11,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:04:11,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:04:11,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:04:11,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:04:11,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:04:11,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:04:11,734 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:04:11,734 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:04:11,734 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:04:11,734 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:04:11,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:04:11,735 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:04:11,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:04:11,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:04:11,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:04:11,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:04:11,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:04:11,736 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:04:11,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:04:11,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:04:11,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:04:11,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:04:11,741 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:04:11,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:04:11,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:04:11,741 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:04:11,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:04:11,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:04:11,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:04:11,955 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:04:11,956 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:04:11,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix044.opt.i [2024-06-21 19:04:12,979 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:04:13,181 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:04:13,182 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix044.opt.i [2024-06-21 19:04:13,192 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af10d6cef/02104beca9854e6c80134eac2027cdd3/FLAG2547ca864 [2024-06-21 19:04:13,204 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af10d6cef/02104beca9854e6c80134eac2027cdd3 [2024-06-21 19:04:13,206 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:04:13,206 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:04:13,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix044.opt.yml/witness.yml [2024-06-21 19:04:13,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:04:13,287 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:04:13,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:04:13,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:04:13,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:04:13,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:04:13" (1/2) ... [2024-06-21 19:04:13,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c34259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:04:13, skipping insertion in model container [2024-06-21 19:04:13,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:04:13" (1/2) ... [2024-06-21 19:04:13,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54be29a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:04:13, skipping insertion in model container [2024-06-21 19:04:13,297 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:04:13" (2/2) ... [2024-06-21 19:04:13,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c34259 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13, skipping insertion in model container [2024-06-21 19:04:13,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:04:13" (2/2) ... [2024-06-21 19:04:13,298 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:04:13,321 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:04:13,322 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 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 )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$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_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )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 )b >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$r_buff1_thd4 >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd4 - (long long )z$w_buff1_used >= 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$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 19:04:13,323 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 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 )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$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_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )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 )b >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$r_buff1_thd4 >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd4 - (long long )z$w_buff1_used >= 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$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 19:04:13,323 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 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 )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$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_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )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 )b >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$r_buff1_thd4 >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd4 - (long long )z$w_buff1_used >= 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$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 19:04:13,323 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 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 )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$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_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )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 )b >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$r_buff1_thd4 >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd4 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd4 - (long long )z$w_buff1_used >= 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$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 19:04:13,323 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:04:13,324 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-21 19:04:13,353 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:04:13,675 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:04:13,689 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:04:13,838 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:04:13,876 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:04:13,876 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13 WrapperNode [2024-06-21 19:04:13,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:04:13,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:04:13,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:04:13,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:04:13,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:13,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:13,941 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 164 [2024-06-21 19:04:13,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:04:13,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:04:13,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:04:13,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:04:13,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:13,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:13,964 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:13,989 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-21 19:04:13,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:13,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:14,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:14,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:14,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:14,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:14,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:04:14,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:04:14,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:04:14,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:04:14,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (1/1) ... [2024-06-21 19:04:14,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:04:14,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:04:14,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-21 19:04:14,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-21 19:04:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:04:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:04:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:04:14,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:04:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:04:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:04:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 19:04:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 19:04:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 19:04:14,073 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 19:04:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:04:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:04:14,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:04:14,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:04:14,075 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 19:04:14,212 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:04:14,213 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:04:14,721 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:04:14,721 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:04:14,895 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:04:14,895 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:04:14,896 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:04:14 BoogieIcfgContainer [2024-06-21 19:04:14,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:04:14,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:04:14,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:04:14,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:04:14,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:04:13" (1/4) ... [2024-06-21 19:04:14,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fca21ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:04:14, skipping insertion in model container [2024-06-21 19:04:14,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:04:13" (2/4) ... [2024-06-21 19:04:14,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fca21ae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:04:14, skipping insertion in model container [2024-06-21 19:04:14,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:04:13" (3/4) ... [2024-06-21 19:04:14,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fca21ae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:04:14, skipping insertion in model container [2024-06-21 19:04:14,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:04:14" (4/4) ... [2024-06-21 19:04:14,905 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2024-06-21 19:04:14,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:04:14,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 19:04:14,918 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:04:14,966 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:04:14,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 19:04:15,030 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-21 19:04:15,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:04:15,032 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 87 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 19:04:15,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 19:04:15,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-21 19:04:15,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:04:15,045 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;@6bba6908, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:04:15,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 19:04:15,048 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:04:15,048 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 19:04:15,048 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:04:15,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:15,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:04:15,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:15,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:15,053 INFO L85 PathProgramCache]: Analyzing trace with hash 385622724, now seen corresponding path program 1 times [2024-06-21 19:04:15,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:15,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938983003] [2024-06-21 19:04:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:15,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:16,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:16,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938983003] [2024-06-21 19:04:16,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938983003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:16,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:16,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:04:16,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645942781] [2024-06-21 19:04:16,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:16,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:04:16,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:04:16,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:04:16,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-21 19:04:16,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:16,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:16,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-21 19:04:16,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:17,423 INFO L124 PetriNetUnfolderBase]: 7503/10720 cut-off events. [2024-06-21 19:04:17,423 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-06-21 19:04:17,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21258 conditions, 10720 events. 7503/10720 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 61786 event pairs, 5685 based on Foata normal form. 1/10394 useless extension candidates. Maximal degree in co-relation 21245. Up to 10229 conditions per place. [2024-06-21 19:04:17,484 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 42 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-21 19:04:17,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 229 flow [2024-06-21 19:04:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:04:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:04:17,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-21 19:04:17,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-06-21 19:04:17,496 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 99 transitions. [2024-06-21 19:04:17,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 229 flow [2024-06-21 19:04:17,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 19:04:17,505 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-21 19:04:17,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-21 19:04:17,509 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-21 19:04:17,510 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-21 19:04:17,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:17,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:17,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:17,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:04:17,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:17,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1216270883, now seen corresponding path program 1 times [2024-06-21 19:04:17,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:17,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4077028] [2024-06-21 19:04:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:17,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:18,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:18,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4077028] [2024-06-21 19:04:18,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4077028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:18,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:18,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:04:18,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259787554] [2024-06-21 19:04:18,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:18,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:04:18,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:18,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:04:18,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:04:18,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 19:04:18,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:18,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:18,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 19:04:18,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:19,604 INFO L124 PetriNetUnfolderBase]: 8591/11980 cut-off events. [2024-06-21 19:04:19,605 INFO L125 PetriNetUnfolderBase]: For 2352/2352 co-relation queries the response was YES. [2024-06-21 19:04:19,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27198 conditions, 11980 events. 8591/11980 cut-off events. For 2352/2352 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 67305 event pairs, 5794 based on Foata normal form. 4/11825 useless extension candidates. Maximal degree in co-relation 27186. Up to 11652 conditions per place. [2024-06-21 19:04:19,658 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 53 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-21 19:04:19,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 323 flow [2024-06-21 19:04:19,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:04:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:04:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-21 19:04:19,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-06-21 19:04:19,661 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 126 transitions. [2024-06-21 19:04:19,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 323 flow [2024-06-21 19:04:19,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:04:19,662 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-21 19:04:19,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-21 19:04:19,663 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-21 19:04:19,663 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-21 19:04:19,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:19,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:19,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:19,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:04:19,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:19,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:19,665 INFO L85 PathProgramCache]: Analyzing trace with hash -950307587, now seen corresponding path program 1 times [2024-06-21 19:04:19,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:19,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888931690] [2024-06-21 19:04:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:19,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:20,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:20,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888931690] [2024-06-21 19:04:20,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888931690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:20,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:20,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:04:20,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501300078] [2024-06-21 19:04:20,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:20,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:04:20,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:20,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:04:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:04:20,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 19:04:20,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:20,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:20,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 19:04:20,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:21,790 INFO L124 PetriNetUnfolderBase]: 8609/12019 cut-off events. [2024-06-21 19:04:21,791 INFO L125 PetriNetUnfolderBase]: For 6745/6745 co-relation queries the response was YES. [2024-06-21 19:04:21,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30490 conditions, 12019 events. 8609/12019 cut-off events. For 6745/6745 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 67490 event pairs, 4384 based on Foata normal form. 7/11877 useless extension candidates. Maximal degree in co-relation 30476. Up to 11573 conditions per place. [2024-06-21 19:04:21,846 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 71 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-21 19:04:21,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 539 flow [2024-06-21 19:04:21,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:04:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:04:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-06-21 19:04:21,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-06-21 19:04:21,848 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 165 transitions. [2024-06-21 19:04:21,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 539 flow [2024-06-21 19:04:21,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 520 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 19:04:21,852 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 312 flow [2024-06-21 19:04:21,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-21 19:04:21,853 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-21 19:04:21,853 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 312 flow [2024-06-21 19:04:21,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:21,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:21,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:21,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:04:21,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:21,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1853626274, now seen corresponding path program 1 times [2024-06-21 19:04:21,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:21,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505001433] [2024-06-21 19:04:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:21,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:22,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:22,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505001433] [2024-06-21 19:04:22,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505001433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:22,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:22,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:04:22,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144470538] [2024-06-21 19:04:22,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:22,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:04:22,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:22,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:04:22,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:04:22,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 19:04:22,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:22,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:22,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 19:04:22,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:24,070 INFO L124 PetriNetUnfolderBase]: 8751/12241 cut-off events. [2024-06-21 19:04:24,071 INFO L125 PetriNetUnfolderBase]: For 16566/16585 co-relation queries the response was YES. [2024-06-21 19:04:24,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36546 conditions, 12241 events. 8751/12241 cut-off events. For 16566/16585 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 69168 event pairs, 3463 based on Foata normal form. 48/12140 useless extension candidates. Maximal degree in co-relation 36529. Up to 11565 conditions per place. [2024-06-21 19:04:24,135 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 81 selfloop transitions, 24 changer transitions 0/114 dead transitions. [2024-06-21 19:04:24,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 694 flow [2024-06-21 19:04:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:04:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:04:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-06-21 19:04:24,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6069182389937107 [2024-06-21 19:04:24,137 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 312 flow. Second operand 6 states and 193 transitions. [2024-06-21 19:04:24,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 694 flow [2024-06-21 19:04:24,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 114 transitions, 682 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-21 19:04:24,145 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 381 flow [2024-06-21 19:04:24,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-06-21 19:04:24,147 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-06-21 19:04:24,147 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 381 flow [2024-06-21 19:04:24,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:24,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:24,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:24,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:04:24,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:24,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:24,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1409890327, now seen corresponding path program 1 times [2024-06-21 19:04:24,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:24,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979736960] [2024-06-21 19:04:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:24,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:25,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:25,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979736960] [2024-06-21 19:04:25,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979736960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:25,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:25,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:04:25,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836116763] [2024-06-21 19:04:25,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:25,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:04:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:25,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:04:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:04:25,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 19:04:25,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 381 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:25,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:25,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 19:04:25,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:26,366 INFO L124 PetriNetUnfolderBase]: 7644/10972 cut-off events. [2024-06-21 19:04:26,367 INFO L125 PetriNetUnfolderBase]: For 21015/21037 co-relation queries the response was YES. [2024-06-21 19:04:26,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35053 conditions, 10972 events. 7644/10972 cut-off events. For 21015/21037 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 63558 event pairs, 3619 based on Foata normal form. 3/10801 useless extension candidates. Maximal degree in co-relation 35032. Up to 10435 conditions per place. [2024-06-21 19:04:26,424 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 64 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-06-21 19:04:26,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 589 flow [2024-06-21 19:04:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:04:26,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:04:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-21 19:04:26,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981132075471698 [2024-06-21 19:04:26,425 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 381 flow. Second operand 5 states and 132 transitions. [2024-06-21 19:04:26,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 589 flow [2024-06-21 19:04:26,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 526 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 19:04:26,433 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 374 flow [2024-06-21 19:04:26,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-21 19:04:26,433 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-06-21 19:04:26,434 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 374 flow [2024-06-21 19:04:26,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:26,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:26,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:26,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:04:26,434 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:26,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:26,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1268366612, now seen corresponding path program 1 times [2024-06-21 19:04:26,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:26,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328719555] [2024-06-21 19:04:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:26,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:27,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:27,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328719555] [2024-06-21 19:04:27,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328719555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:27,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:27,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:04:27,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798522274] [2024-06-21 19:04:27,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:27,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:04:27,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:04:27,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:04:27,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:04:27,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:27,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:27,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:04:27,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:29,470 INFO L124 PetriNetUnfolderBase]: 8891/12410 cut-off events. [2024-06-21 19:04:29,471 INFO L125 PetriNetUnfolderBase]: For 28694/28744 co-relation queries the response was YES. [2024-06-21 19:04:29,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40694 conditions, 12410 events. 8891/12410 cut-off events. For 28694/28744 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 69432 event pairs, 4223 based on Foata normal form. 40/12284 useless extension candidates. Maximal degree in co-relation 40669. Up to 11903 conditions per place. [2024-06-21 19:04:29,537 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 74 selfloop transitions, 38 changer transitions 0/120 dead transitions. [2024-06-21 19:04:29,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 120 transitions, 876 flow [2024-06-21 19:04:29,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:04:29,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:04:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-21 19:04:29,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251572327044025 [2024-06-21 19:04:29,539 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 374 flow. Second operand 6 states and 167 transitions. [2024-06-21 19:04:29,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 120 transitions, 876 flow [2024-06-21 19:04:29,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 120 transitions, 852 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 19:04:29,548 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 585 flow [2024-06-21 19:04:29,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=585, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2024-06-21 19:04:29,549 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2024-06-21 19:04:29,549 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 585 flow [2024-06-21 19:04:29,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:29,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:29,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:29,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:04:29,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:29,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:29,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1989958262, now seen corresponding path program 2 times [2024-06-21 19:04:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:29,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393213127] [2024-06-21 19:04:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:29,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:30,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:30,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393213127] [2024-06-21 19:04:30,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393213127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:30,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:30,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:04:30,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287832712] [2024-06-21 19:04:30,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:30,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:04:30,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:04:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:04:30,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:04:30,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 585 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:30,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:30,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:04:30,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:32,263 INFO L124 PetriNetUnfolderBase]: 8876/12414 cut-off events. [2024-06-21 19:04:32,263 INFO L125 PetriNetUnfolderBase]: For 34469/34536 co-relation queries the response was YES. [2024-06-21 19:04:32,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41976 conditions, 12414 events. 8876/12414 cut-off events. For 34469/34536 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 69382 event pairs, 4225 based on Foata normal form. 67/12314 useless extension candidates. Maximal degree in co-relation 41947. Up to 11888 conditions per place. [2024-06-21 19:04:32,331 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 65 selfloop transitions, 42 changer transitions 0/115 dead transitions. [2024-06-21 19:04:32,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 115 transitions, 919 flow [2024-06-21 19:04:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:04:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:04:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-21 19:04:32,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-21 19:04:32,332 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 585 flow. Second operand 6 states and 162 transitions. [2024-06-21 19:04:32,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 115 transitions, 919 flow [2024-06-21 19:04:32,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 877 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-21 19:04:32,346 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 650 flow [2024-06-21 19:04:32,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2024-06-21 19:04:32,347 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2024-06-21 19:04:32,347 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 650 flow [2024-06-21 19:04:32,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:32,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:32,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:32,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:04:32,348 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:32,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1739517182, now seen corresponding path program 3 times [2024-06-21 19:04:32,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:32,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563740935] [2024-06-21 19:04:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:32,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:33,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:33,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563740935] [2024-06-21 19:04:33,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563740935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:33,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:33,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:04:33,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312896297] [2024-06-21 19:04:33,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:33,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:04:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:04:33,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:04:33,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:04:33,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 650 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:33,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:33,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:04:33,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:34,729 INFO L124 PetriNetUnfolderBase]: 8966/12545 cut-off events. [2024-06-21 19:04:34,729 INFO L125 PetriNetUnfolderBase]: For 42405/42454 co-relation queries the response was YES. [2024-06-21 19:04:34,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43778 conditions, 12545 events. 8966/12545 cut-off events. For 42405/42454 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 70145 event pairs, 4201 based on Foata normal form. 34/12430 useless extension candidates. Maximal degree in co-relation 43745. Up to 11926 conditions per place. [2024-06-21 19:04:34,804 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 76 selfloop transitions, 60 changer transitions 0/144 dead transitions. [2024-06-21 19:04:34,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 144 transitions, 1253 flow [2024-06-21 19:04:34,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:04:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:04:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-21 19:04:34,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49865229110512127 [2024-06-21 19:04:34,806 INFO L175 Difference]: Start difference. First operand has 80 places, 88 transitions, 650 flow. Second operand 7 states and 185 transitions. [2024-06-21 19:04:34,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 144 transitions, 1253 flow [2024-06-21 19:04:34,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 144 transitions, 1162 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-21 19:04:34,836 INFO L231 Difference]: Finished difference. Result has 87 places, 110 transitions, 973 flow [2024-06-21 19:04:34,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=973, PETRI_PLACES=87, PETRI_TRANSITIONS=110} [2024-06-21 19:04:34,837 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-21 19:04:34,837 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 110 transitions, 973 flow [2024-06-21 19:04:34,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:34,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:34,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:34,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:04:34,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:34,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1559411936, now seen corresponding path program 1 times [2024-06-21 19:04:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:34,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364630787] [2024-06-21 19:04:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:34,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:36,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:36,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:36,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364630787] [2024-06-21 19:04:36,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364630787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:36,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:36,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:04:36,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186045937] [2024-06-21 19:04:36,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:36,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:04:36,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:04:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:04:36,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:04:36,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 110 transitions, 973 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:36,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:36,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:04:36,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:38,431 INFO L124 PetriNetUnfolderBase]: 11519/15978 cut-off events. [2024-06-21 19:04:38,431 INFO L125 PetriNetUnfolderBase]: For 64428/64430 co-relation queries the response was YES. [2024-06-21 19:04:38,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56574 conditions, 15978 events. 11519/15978 cut-off events. For 64428/64430 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 87756 event pairs, 5491 based on Foata normal form. 6/15805 useless extension candidates. Maximal degree in co-relation 56537. Up to 15537 conditions per place. [2024-06-21 19:04:38,520 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 122 selfloop transitions, 19 changer transitions 0/148 dead transitions. [2024-06-21 19:04:38,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 148 transitions, 1415 flow [2024-06-21 19:04:38,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:04:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:04:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-21 19:04:38,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42924528301886794 [2024-06-21 19:04:38,522 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 973 flow. Second operand 8 states and 182 transitions. [2024-06-21 19:04:38,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 148 transitions, 1415 flow [2024-06-21 19:04:38,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 148 transitions, 1359 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 19:04:38,572 INFO L231 Difference]: Finished difference. Result has 93 places, 117 transitions, 1042 flow [2024-06-21 19:04:38,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1042, PETRI_PLACES=93, PETRI_TRANSITIONS=117} [2024-06-21 19:04:38,572 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2024-06-21 19:04:38,572 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 117 transitions, 1042 flow [2024-06-21 19:04:38,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:38,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:38,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:38,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:04:38,573 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:38,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:38,574 INFO L85 PathProgramCache]: Analyzing trace with hash -455683969, now seen corresponding path program 1 times [2024-06-21 19:04:38,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:38,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874438729] [2024-06-21 19:04:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:38,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:39,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:39,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874438729] [2024-06-21 19:04:39,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874438729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:39,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:39,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:04:39,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811316237] [2024-06-21 19:04:39,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:39,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:04:39,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:39,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:04:39,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:04:39,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:04:39,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 117 transitions, 1042 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:39,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:39,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:04:39,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:41,171 INFO L124 PetriNetUnfolderBase]: 10117/14474 cut-off events. [2024-06-21 19:04:41,171 INFO L125 PetriNetUnfolderBase]: For 67786/67788 co-relation queries the response was YES. [2024-06-21 19:04:41,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53747 conditions, 14474 events. 10117/14474 cut-off events. For 67786/67788 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 82614 event pairs, 4842 based on Foata normal form. 2/14322 useless extension candidates. Maximal degree in co-relation 53708. Up to 13734 conditions per place. [2024-06-21 19:04:41,263 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 114 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2024-06-21 19:04:41,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 134 transitions, 1366 flow [2024-06-21 19:04:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:04:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:04:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-21 19:04:41,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679245283018868 [2024-06-21 19:04:41,265 INFO L175 Difference]: Start difference. First operand has 93 places, 117 transitions, 1042 flow. Second operand 5 states and 124 transitions. [2024-06-21 19:04:41,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 134 transitions, 1366 flow [2024-06-21 19:04:41,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 134 transitions, 1300 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 19:04:41,317 INFO L231 Difference]: Finished difference. Result has 92 places, 121 transitions, 1051 flow [2024-06-21 19:04:41,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1051, PETRI_PLACES=92, PETRI_TRANSITIONS=121} [2024-06-21 19:04:41,317 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-21 19:04:41,318 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 121 transitions, 1051 flow [2024-06-21 19:04:41,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:41,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:41,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:41,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:04:41,318 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:41,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1241299685, now seen corresponding path program 1 times [2024-06-21 19:04:41,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:41,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297370811] [2024-06-21 19:04:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:41,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:42,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:42,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297370811] [2024-06-21 19:04:42,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297370811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:42,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:42,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:04:42,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271949567] [2024-06-21 19:04:42,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:42,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:04:42,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:04:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:04:42,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:04:42,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 121 transitions, 1051 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:42,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:42,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:04:42,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:44,499 INFO L124 PetriNetUnfolderBase]: 10103/14724 cut-off events. [2024-06-21 19:04:44,499 INFO L125 PetriNetUnfolderBase]: For 82184/82186 co-relation queries the response was YES. [2024-06-21 19:04:44,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56986 conditions, 14724 events. 10103/14724 cut-off events. For 82184/82186 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 87011 event pairs, 4806 based on Foata normal form. 4/14708 useless extension candidates. Maximal degree in co-relation 56947. Up to 13698 conditions per place. [2024-06-21 19:04:44,608 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 119 selfloop transitions, 16 changer transitions 0/143 dead transitions. [2024-06-21 19:04:44,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 143 transitions, 1413 flow [2024-06-21 19:04:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:04:44,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:04:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-21 19:04:44,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2024-06-21 19:04:44,609 INFO L175 Difference]: Start difference. First operand has 92 places, 121 transitions, 1051 flow. Second operand 6 states and 146 transitions. [2024-06-21 19:04:44,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 143 transitions, 1413 flow [2024-06-21 19:04:44,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 143 transitions, 1382 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 19:04:44,682 INFO L231 Difference]: Finished difference. Result has 95 places, 125 transitions, 1109 flow [2024-06-21 19:04:44,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1109, PETRI_PLACES=95, PETRI_TRANSITIONS=125} [2024-06-21 19:04:44,683 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-06-21 19:04:44,683 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 125 transitions, 1109 flow [2024-06-21 19:04:44,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:44,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:44,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:44,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:04:44,683 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:44,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:44,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1326140121, now seen corresponding path program 1 times [2024-06-21 19:04:44,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:44,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933179500] [2024-06-21 19:04:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:44,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:46,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:46,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933179500] [2024-06-21 19:04:46,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933179500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:46,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:46,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:04:46,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529277078] [2024-06-21 19:04:46,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:46,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:04:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:46,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:04:46,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:04:46,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:04:46,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 125 transitions, 1109 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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) [2024-06-21 19:04:46,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:46,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:04:46,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:48,141 INFO L124 PetriNetUnfolderBase]: 11280/15850 cut-off events. [2024-06-21 19:04:48,141 INFO L125 PetriNetUnfolderBase]: For 116110/116232 co-relation queries the response was YES. [2024-06-21 19:04:48,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66123 conditions, 15850 events. 11280/15850 cut-off events. For 116110/116232 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 90826 event pairs, 4652 based on Foata normal form. 99/15838 useless extension candidates. Maximal degree in co-relation 66081. Up to 14788 conditions per place. [2024-06-21 19:04:48,257 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 92 selfloop transitions, 64 changer transitions 0/165 dead transitions. [2024-06-21 19:04:48,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 165 transitions, 1585 flow [2024-06-21 19:04:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:04:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:04:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-21 19:04:48,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740566037735849 [2024-06-21 19:04:48,259 INFO L175 Difference]: Start difference. First operand has 95 places, 125 transitions, 1109 flow. Second operand 8 states and 201 transitions. [2024-06-21 19:04:48,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 165 transitions, 1585 flow [2024-06-21 19:04:48,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 165 transitions, 1534 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-21 19:04:48,325 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 1241 flow [2024-06-21 19:04:48,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1241, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2024-06-21 19:04:48,326 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-21 19:04:48,326 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 1241 flow [2024-06-21 19:04:48,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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) [2024-06-21 19:04:48,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:48,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:48,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:04:48,327 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:48,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:48,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1328997081, now seen corresponding path program 2 times [2024-06-21 19:04:48,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:48,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619107349] [2024-06-21 19:04:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:48,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:49,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:49,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619107349] [2024-06-21 19:04:49,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619107349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:49,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:49,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:04:49,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004255798] [2024-06-21 19:04:49,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:49,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:04:49,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:04:49,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:04:49,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:04:49,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 1241 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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) [2024-06-21 19:04:49,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:49,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:04:49,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:51,924 INFO L124 PetriNetUnfolderBase]: 11719/16486 cut-off events. [2024-06-21 19:04:51,924 INFO L125 PetriNetUnfolderBase]: For 139426/139568 co-relation queries the response was YES. [2024-06-21 19:04:51,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72265 conditions, 16486 events. 11719/16486 cut-off events. For 139426/139568 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 95035 event pairs, 4459 based on Foata normal form. 62/16481 useless extension candidates. Maximal degree in co-relation 72222. Up to 14841 conditions per place. [2024-06-21 19:04:52,019 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 106 selfloop transitions, 64 changer transitions 0/179 dead transitions. [2024-06-21 19:04:52,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 179 transitions, 1877 flow [2024-06-21 19:04:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:04:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:04:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-21 19:04:52,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858490566037736 [2024-06-21 19:04:52,021 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 1241 flow. Second operand 8 states and 206 transitions. [2024-06-21 19:04:52,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 179 transitions, 1877 flow [2024-06-21 19:04:52,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 179 transitions, 1699 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 19:04:52,092 INFO L231 Difference]: Finished difference. Result has 101 places, 135 transitions, 1309 flow [2024-06-21 19:04:52,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1309, PETRI_PLACES=101, PETRI_TRANSITIONS=135} [2024-06-21 19:04:52,093 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2024-06-21 19:04:52,093 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 135 transitions, 1309 flow [2024-06-21 19:04:52,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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) [2024-06-21 19:04:52,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:52,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:52,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:04:52,094 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:52,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:52,094 INFO L85 PathProgramCache]: Analyzing trace with hash 162975198, now seen corresponding path program 1 times [2024-06-21 19:04:52,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:52,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319172715] [2024-06-21 19:04:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:52,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:53,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:53,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319172715] [2024-06-21 19:04:53,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319172715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:53,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:53,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:04:53,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507225840] [2024-06-21 19:04:53,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:53,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:04:53,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:53,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:04:53,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:04:53,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:04:53,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 135 transitions, 1309 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:53,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:53,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:04:53,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:55,367 INFO L124 PetriNetUnfolderBase]: 12248/17135 cut-off events. [2024-06-21 19:04:55,368 INFO L125 PetriNetUnfolderBase]: For 160307/160323 co-relation queries the response was YES. [2024-06-21 19:04:55,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77492 conditions, 17135 events. 12248/17135 cut-off events. For 160307/160323 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 95701 event pairs, 5454 based on Foata normal form. 14/17111 useless extension candidates. Maximal degree in co-relation 77448. Up to 16599 conditions per place. [2024-06-21 19:04:55,474 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 135 selfloop transitions, 34 changer transitions 0/176 dead transitions. [2024-06-21 19:04:55,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 176 transitions, 1999 flow [2024-06-21 19:04:55,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:04:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:04:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-21 19:04:55,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-06-21 19:04:55,476 INFO L175 Difference]: Start difference. First operand has 101 places, 135 transitions, 1309 flow. Second operand 6 states and 152 transitions. [2024-06-21 19:04:55,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 176 transitions, 1999 flow [2024-06-21 19:04:55,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 176 transitions, 1912 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-21 19:04:55,584 INFO L231 Difference]: Finished difference. Result has 104 places, 150 transitions, 1482 flow [2024-06-21 19:04:55,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1482, PETRI_PLACES=104, PETRI_TRANSITIONS=150} [2024-06-21 19:04:55,585 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2024-06-21 19:04:55,585 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 150 transitions, 1482 flow [2024-06-21 19:04:55,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:55,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:55,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:55,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:04:55,586 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:55,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:55,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1120370957, now seen corresponding path program 1 times [2024-06-21 19:04:55,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:55,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338036634] [2024-06-21 19:04:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:55,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:04:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:04:57,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:04:57,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338036634] [2024-06-21 19:04:57,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338036634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:04:57,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:04:57,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:04:57,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879412781] [2024-06-21 19:04:57,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:04:57,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:04:57,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:04:57,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:04:57,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:04:57,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:04:57,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 150 transitions, 1482 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:57,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:04:57,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:04:57,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:04:59,646 INFO L124 PetriNetUnfolderBase]: 12324/17233 cut-off events. [2024-06-21 19:04:59,646 INFO L125 PetriNetUnfolderBase]: For 184400/184400 co-relation queries the response was YES. [2024-06-21 19:04:59,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81631 conditions, 17233 events. 12324/17233 cut-off events. For 184400/184400 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 96045 event pairs, 4823 based on Foata normal form. 6/17177 useless extension candidates. Maximal degree in co-relation 81583. Up to 16215 conditions per place. [2024-06-21 19:04:59,779 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 121 selfloop transitions, 97 changer transitions 0/225 dead transitions. [2024-06-21 19:04:59,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 225 transitions, 2435 flow [2024-06-21 19:04:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:04:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:04:59,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-21 19:04:59,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45073375262054505 [2024-06-21 19:04:59,781 INFO L175 Difference]: Start difference. First operand has 104 places, 150 transitions, 1482 flow. Second operand 9 states and 215 transitions. [2024-06-21 19:04:59,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 225 transitions, 2435 flow [2024-06-21 19:04:59,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 225 transitions, 2413 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-21 19:04:59,934 INFO L231 Difference]: Finished difference. Result has 114 places, 181 transitions, 2067 flow [2024-06-21 19:04:59,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2067, PETRI_PLACES=114, PETRI_TRANSITIONS=181} [2024-06-21 19:04:59,934 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-06-21 19:04:59,934 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 181 transitions, 2067 flow [2024-06-21 19:04:59,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:04:59,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:04:59,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:04:59,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:04:59,935 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:04:59,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:04:59,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1139257121, now seen corresponding path program 2 times [2024-06-21 19:04:59,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:04:59,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545894509] [2024-06-21 19:04:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:04:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:04:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:01,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545894509] [2024-06-21 19:05:01,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545894509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:01,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:01,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:05:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658483450] [2024-06-21 19:05:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:01,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:05:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:05:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:05:01,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:05:01,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 181 transitions, 2067 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:01,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:01,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:05:01,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:04,032 INFO L124 PetriNetUnfolderBase]: 12634/17715 cut-off events. [2024-06-21 19:05:04,032 INFO L125 PetriNetUnfolderBase]: For 214789/214795 co-relation queries the response was YES. [2024-06-21 19:05:04,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87900 conditions, 17715 events. 12634/17715 cut-off events. For 214789/214795 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 99301 event pairs, 3794 based on Foata normal form. 12/17667 useless extension candidates. Maximal degree in co-relation 87847. Up to 16101 conditions per place. [2024-06-21 19:05:04,195 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 124 selfloop transitions, 110 changer transitions 0/241 dead transitions. [2024-06-21 19:05:04,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 241 transitions, 2945 flow [2024-06-21 19:05:04,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:05:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:05:04,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-21 19:05:04,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2024-06-21 19:05:04,197 INFO L175 Difference]: Start difference. First operand has 114 places, 181 transitions, 2067 flow. Second operand 9 states and 222 transitions. [2024-06-21 19:05:04,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 241 transitions, 2945 flow [2024-06-21 19:05:04,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 241 transitions, 2785 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 19:05:04,447 INFO L231 Difference]: Finished difference. Result has 120 places, 191 transitions, 2340 flow [2024-06-21 19:05:04,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2340, PETRI_PLACES=120, PETRI_TRANSITIONS=191} [2024-06-21 19:05:04,448 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2024-06-21 19:05:04,448 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 191 transitions, 2340 flow [2024-06-21 19:05:04,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:04,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:04,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:04,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:05:04,450 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)] === [2024-06-21 19:05:04,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:04,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1348272107, now seen corresponding path program 3 times [2024-06-21 19:05:04,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:04,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995351321] [2024-06-21 19:05:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:04,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:06,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:06,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995351321] [2024-06-21 19:05:06,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995351321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:06,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:06,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:05:06,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814061439] [2024-06-21 19:05:06,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:06,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:05:06,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:06,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:05:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:05:06,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:05:06,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 191 transitions, 2340 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:06,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:06,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:05:06,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:08,815 INFO L124 PetriNetUnfolderBase]: 12619/17758 cut-off events. [2024-06-21 19:05:08,815 INFO L125 PetriNetUnfolderBase]: For 245548/245550 co-relation queries the response was YES. [2024-06-21 19:05:08,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90490 conditions, 17758 events. 12619/17758 cut-off events. For 245548/245550 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 100236 event pairs, 4896 based on Foata normal form. 8/17646 useless extension candidates. Maximal degree in co-relation 90435. Up to 16656 conditions per place. [2024-06-21 19:05:08,941 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 132 selfloop transitions, 97 changer transitions 0/236 dead transitions. [2024-06-21 19:05:08,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 236 transitions, 2972 flow [2024-06-21 19:05:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:05:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:05:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-21 19:05:08,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45073375262054505 [2024-06-21 19:05:08,942 INFO L175 Difference]: Start difference. First operand has 120 places, 191 transitions, 2340 flow. Second operand 9 states and 215 transitions. [2024-06-21 19:05:08,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 236 transitions, 2972 flow [2024-06-21 19:05:09,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 236 transitions, 2801 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-21 19:05:09,190 INFO L231 Difference]: Finished difference. Result has 125 places, 193 transitions, 2417 flow [2024-06-21 19:05:09,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2417, PETRI_PLACES=125, PETRI_TRANSITIONS=193} [2024-06-21 19:05:09,191 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-06-21 19:05:09,191 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 193 transitions, 2417 flow [2024-06-21 19:05:09,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:09,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:09,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:09,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:05:09,191 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:05:09,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:09,191 INFO L85 PathProgramCache]: Analyzing trace with hash 174403038, now seen corresponding path program 2 times [2024-06-21 19:05:09,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:09,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551290101] [2024-06-21 19:05:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:09,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:10,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:10,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551290101] [2024-06-21 19:05:10,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551290101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:10,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:10,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:05:10,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715105717] [2024-06-21 19:05:10,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:10,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:05:10,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:10,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:05:10,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:05:10,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:05:10,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 193 transitions, 2417 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:10,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:10,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:05:10,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:12,657 INFO L124 PetriNetUnfolderBase]: 12612/17775 cut-off events. [2024-06-21 19:05:12,657 INFO L125 PetriNetUnfolderBase]: For 264131/264149 co-relation queries the response was YES. [2024-06-21 19:05:12,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92032 conditions, 17775 events. 12612/17775 cut-off events. For 264131/264149 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 100677 event pairs, 4865 based on Foata normal form. 14/17688 useless extension candidates. Maximal degree in co-relation 91974. Up to 17139 conditions per place. [2024-06-21 19:05:12,807 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 172 selfloop transitions, 35 changer transitions 0/214 dead transitions. [2024-06-21 19:05:12,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 214 transitions, 2967 flow [2024-06-21 19:05:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:05:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:05:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-21 19:05:12,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559748427672956 [2024-06-21 19:05:12,809 INFO L175 Difference]: Start difference. First operand has 125 places, 193 transitions, 2417 flow. Second operand 6 states and 145 transitions. [2024-06-21 19:05:12,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 214 transitions, 2967 flow [2024-06-21 19:05:13,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 214 transitions, 2639 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-21 19:05:13,112 INFO L231 Difference]: Finished difference. Result has 124 places, 193 transitions, 2170 flow [2024-06-21 19:05:13,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2170, PETRI_PLACES=124, PETRI_TRANSITIONS=193} [2024-06-21 19:05:13,113 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 68 predicate places. [2024-06-21 19:05:13,113 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 193 transitions, 2170 flow [2024-06-21 19:05:13,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:13,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:13,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:13,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 19:05:13,113 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:05:13,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1005532839, now seen corresponding path program 3 times [2024-06-21 19:05:13,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:13,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416795189] [2024-06-21 19:05:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:13,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:14,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:14,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416795189] [2024-06-21 19:05:14,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416795189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:14,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:14,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:05:14,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307402399] [2024-06-21 19:05:14,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:14,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:05:14,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:14,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:05:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:05:14,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:05:14,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 193 transitions, 2170 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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) [2024-06-21 19:05:14,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:14,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:05:14,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:16,637 INFO L124 PetriNetUnfolderBase]: 12879/18433 cut-off events. [2024-06-21 19:05:16,637 INFO L125 PetriNetUnfolderBase]: For 293612/293670 co-relation queries the response was YES. [2024-06-21 19:05:16,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96626 conditions, 18433 events. 12879/18433 cut-off events. For 293612/293670 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 110122 event pairs, 4993 based on Foata normal form. 56/18342 useless extension candidates. Maximal degree in co-relation 96567. Up to 15906 conditions per place. [2024-06-21 19:05:16,832 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 158 selfloop transitions, 104 changer transitions 0/273 dead transitions. [2024-06-21 19:05:16,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 273 transitions, 3309 flow [2024-06-21 19:05:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:05:16,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:05:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-21 19:05:16,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117924528301887 [2024-06-21 19:05:16,842 INFO L175 Difference]: Start difference. First operand has 124 places, 193 transitions, 2170 flow. Second operand 8 states and 217 transitions. [2024-06-21 19:05:16,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 273 transitions, 3309 flow [2024-06-21 19:05:17,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 273 transitions, 3259 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-21 19:05:17,170 INFO L231 Difference]: Finished difference. Result has 131 places, 215 transitions, 2694 flow [2024-06-21 19:05:17,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2694, PETRI_PLACES=131, PETRI_TRANSITIONS=215} [2024-06-21 19:05:17,171 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2024-06-21 19:05:17,171 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 215 transitions, 2694 flow [2024-06-21 19:05:17,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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) [2024-06-21 19:05:17,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:17,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:17,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 19:05:17,171 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:05:17,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash 237327843, now seen corresponding path program 4 times [2024-06-21 19:05:17,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:17,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900842027] [2024-06-21 19:05:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:17,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:18,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:18,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900842027] [2024-06-21 19:05:18,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900842027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:18,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:18,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:05:18,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392152270] [2024-06-21 19:05:18,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:18,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:05:18,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:18,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:05:18,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:05:18,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:05:18,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 215 transitions, 2694 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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) [2024-06-21 19:05:18,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:18,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:05:18,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:21,105 INFO L124 PetriNetUnfolderBase]: 13064/18747 cut-off events. [2024-06-21 19:05:21,105 INFO L125 PetriNetUnfolderBase]: For 333095/333153 co-relation queries the response was YES. [2024-06-21 19:05:21,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101726 conditions, 18747 events. 13064/18747 cut-off events. For 333095/333153 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 112664 event pairs, 5009 based on Foata normal form. 86/18694 useless extension candidates. Maximal degree in co-relation 101664. Up to 17153 conditions per place. [2024-06-21 19:05:21,255 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 161 selfloop transitions, 98 changer transitions 0/270 dead transitions. [2024-06-21 19:05:21,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 270 transitions, 3522 flow [2024-06-21 19:05:21,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:05:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:05:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-21 19:05:21,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 19:05:21,257 INFO L175 Difference]: Start difference. First operand has 131 places, 215 transitions, 2694 flow. Second operand 8 states and 212 transitions. [2024-06-21 19:05:21,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 270 transitions, 3522 flow [2024-06-21 19:05:21,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 270 transitions, 3304 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-21 19:05:21,662 INFO L231 Difference]: Finished difference. Result has 134 places, 222 transitions, 2827 flow [2024-06-21 19:05:21,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2827, PETRI_PLACES=134, PETRI_TRANSITIONS=222} [2024-06-21 19:05:21,663 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-21 19:05:21,663 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 222 transitions, 2827 flow [2024-06-21 19:05:21,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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) [2024-06-21 19:05:21,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:21,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:21,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 19:05:21,663 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:05:21,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:21,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2023824707, now seen corresponding path program 5 times [2024-06-21 19:05:21,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:21,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236631225] [2024-06-21 19:05:21,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:21,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:22,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:22,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236631225] [2024-06-21 19:05:22,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236631225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:22,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:22,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:05:22,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833216110] [2024-06-21 19:05:22,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:22,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:05:22,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:22,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:05:22,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:05:22,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-21 19:05:22,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 222 transitions, 2827 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:22,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:22,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-21 19:05:22,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:25,192 INFO L124 PetriNetUnfolderBase]: 10055/15994 cut-off events. [2024-06-21 19:05:25,192 INFO L125 PetriNetUnfolderBase]: For 321518/322066 co-relation queries the response was YES. [2024-06-21 19:05:25,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91019 conditions, 15994 events. 10055/15994 cut-off events. For 321518/322066 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 110833 event pairs, 2533 based on Foata normal form. 198/15564 useless extension candidates. Maximal degree in co-relation 90956. Up to 11295 conditions per place. [2024-06-21 19:05:25,376 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 111 selfloop transitions, 146 changer transitions 0/297 dead transitions. [2024-06-21 19:05:25,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 297 transitions, 4102 flow [2024-06-21 19:05:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:05:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:05:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-21 19:05:25,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606469002695418 [2024-06-21 19:05:25,378 INFO L175 Difference]: Start difference. First operand has 134 places, 222 transitions, 2827 flow. Second operand 7 states and 208 transitions. [2024-06-21 19:05:25,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 297 transitions, 4102 flow [2024-06-21 19:05:25,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 297 transitions, 3894 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 19:05:25,946 INFO L231 Difference]: Finished difference. Result has 137 places, 249 transitions, 3460 flow [2024-06-21 19:05:25,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3460, PETRI_PLACES=137, PETRI_TRANSITIONS=249} [2024-06-21 19:05:25,947 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-06-21 19:05:25,947 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 249 transitions, 3460 flow [2024-06-21 19:05:25,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:25,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:25,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:25,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 19:05:25,948 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:05:25,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1100984542, now seen corresponding path program 3 times [2024-06-21 19:05:25,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:25,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834788296] [2024-06-21 19:05:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:25,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:26,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:26,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834788296] [2024-06-21 19:05:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834788296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:26,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:26,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:05:26,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713190630] [2024-06-21 19:05:26,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:26,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:05:26,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:26,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:05:26,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:05:26,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:05:26,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 249 transitions, 3460 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:26,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:26,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:05:26,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:29,787 INFO L124 PetriNetUnfolderBase]: 14900/21287 cut-off events. [2024-06-21 19:05:29,787 INFO L125 PetriNetUnfolderBase]: For 399982/399991 co-relation queries the response was YES. [2024-06-21 19:05:29,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119751 conditions, 21287 events. 14900/21287 cut-off events. For 399982/399991 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 126934 event pairs, 6085 based on Foata normal form. 8/21261 useless extension candidates. Maximal degree in co-relation 119685. Up to 20448 conditions per place. [2024-06-21 19:05:30,044 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 236 selfloop transitions, 50 changer transitions 0/293 dead transitions. [2024-06-21 19:05:30,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 293 transitions, 4267 flow [2024-06-21 19:05:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:05:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:05:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-21 19:05:30,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636118598382749 [2024-06-21 19:05:30,045 INFO L175 Difference]: Start difference. First operand has 137 places, 249 transitions, 3460 flow. Second operand 7 states and 172 transitions. [2024-06-21 19:05:30,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 293 transitions, 4267 flow [2024-06-21 19:05:30,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 293 transitions, 4159 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-21 19:05:30,717 INFO L231 Difference]: Finished difference. Result has 143 places, 265 transitions, 3640 flow [2024-06-21 19:05:30,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3380, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3640, PETRI_PLACES=143, PETRI_TRANSITIONS=265} [2024-06-21 19:05:30,717 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 87 predicate places. [2024-06-21 19:05:30,718 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 265 transitions, 3640 flow [2024-06-21 19:05:30,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:30,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:30,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:30,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 19:05:30,718 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:05:30,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:30,718 INFO L85 PathProgramCache]: Analyzing trace with hash 168695070, now seen corresponding path program 1 times [2024-06-21 19:05:30,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:30,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807607476] [2024-06-21 19:05:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:30,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:31,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:31,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:31,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807607476] [2024-06-21 19:05:31,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807607476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:31,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:31,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:05:31,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229552044] [2024-06-21 19:05:31,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:31,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:05:31,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:31,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:05:31,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:05:31,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:05:31,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 265 transitions, 3640 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:31,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:31,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:05:31,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:35,032 INFO L124 PetriNetUnfolderBase]: 13521/19706 cut-off events. [2024-06-21 19:05:35,032 INFO L125 PetriNetUnfolderBase]: For 370525/370531 co-relation queries the response was YES. [2024-06-21 19:05:35,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110703 conditions, 19706 events. 13521/19706 cut-off events. For 370525/370531 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 121187 event pairs, 5551 based on Foata normal form. 6/19653 useless extension candidates. Maximal degree in co-relation 110634. Up to 18663 conditions per place. [2024-06-21 19:05:35,183 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 264 selfloop transitions, 23 changer transitions 0/295 dead transitions. [2024-06-21 19:05:35,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 295 transitions, 4470 flow [2024-06-21 19:05:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:05:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:05:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-21 19:05:35,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-06-21 19:05:35,184 INFO L175 Difference]: Start difference. First operand has 143 places, 265 transitions, 3640 flow. Second operand 6 states and 152 transitions. [2024-06-21 19:05:35,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 295 transitions, 4470 flow [2024-06-21 19:05:35,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 295 transitions, 4393 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-21 19:05:35,753 INFO L231 Difference]: Finished difference. Result has 146 places, 273 transitions, 3724 flow [2024-06-21 19:05:35,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3563, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3724, PETRI_PLACES=146, PETRI_TRANSITIONS=273} [2024-06-21 19:05:35,754 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 90 predicate places. [2024-06-21 19:05:35,754 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 273 transitions, 3724 flow [2024-06-21 19:05:35,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:35,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:35,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:35,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 19:05:35,754 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:05:35,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:35,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1348885530, now seen corresponding path program 2 times [2024-06-21 19:05:35,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:35,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239176061] [2024-06-21 19:05:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:35,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:37,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:37,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239176061] [2024-06-21 19:05:37,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239176061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:37,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:37,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:05:37,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528725227] [2024-06-21 19:05:37,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:37,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:05:37,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:37,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:05:37,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:05:37,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:05:37,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 273 transitions, 3724 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:37,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:37,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:05:37,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:40,390 INFO L124 PetriNetUnfolderBase]: 13514/19698 cut-off events. [2024-06-21 19:05:40,390 INFO L125 PetriNetUnfolderBase]: For 401957/401963 co-relation queries the response was YES. [2024-06-21 19:05:40,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113907 conditions, 19698 events. 13514/19698 cut-off events. For 401957/401963 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 121071 event pairs, 5554 based on Foata normal form. 6/19644 useless extension candidates. Maximal degree in co-relation 113836. Up to 18656 conditions per place. [2024-06-21 19:05:40,559 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 259 selfloop transitions, 23 changer transitions 0/290 dead transitions. [2024-06-21 19:05:40,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 290 transitions, 4346 flow [2024-06-21 19:05:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:05:40,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:05:40,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-21 19:05:40,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2024-06-21 19:05:40,560 INFO L175 Difference]: Start difference. First operand has 146 places, 273 transitions, 3724 flow. Second operand 6 states and 147 transitions. [2024-06-21 19:05:40,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 290 transitions, 4346 flow [2024-06-21 19:05:41,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 290 transitions, 4295 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-21 19:05:41,195 INFO L231 Difference]: Finished difference. Result has 150 places, 273 transitions, 3730 flow [2024-06-21 19:05:41,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3673, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3730, PETRI_PLACES=150, PETRI_TRANSITIONS=273} [2024-06-21 19:05:41,195 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 94 predicate places. [2024-06-21 19:05:41,196 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 273 transitions, 3730 flow [2024-06-21 19:05:41,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:41,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:41,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:41,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 19:05:41,196 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:05:41,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:41,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1397219829, now seen corresponding path program 1 times [2024-06-21 19:05:41,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:41,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582684274] [2024-06-21 19:05:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:41,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:42,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:42,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582684274] [2024-06-21 19:05:42,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582684274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:42,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:42,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:05:42,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237766079] [2024-06-21 19:05:42,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:42,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:05:42,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:42,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:05:42,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:05:43,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:05:43,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 273 transitions, 3730 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 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) [2024-06-21 19:05:43,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:43,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:05:43,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:46,894 INFO L124 PetriNetUnfolderBase]: 15541/22285 cut-off events. [2024-06-21 19:05:46,894 INFO L125 PetriNetUnfolderBase]: For 502176/502189 co-relation queries the response was YES. [2024-06-21 19:05:47,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130713 conditions, 22285 events. 15541/22285 cut-off events. For 502176/502189 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 134458 event pairs, 5383 based on Foata normal form. 52/22285 useless extension candidates. Maximal degree in co-relation 130638. Up to 19592 conditions per place. [2024-06-21 19:05:47,223 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 218 selfloop transitions, 118 changer transitions 0/343 dead transitions. [2024-06-21 19:05:47,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 343 transitions, 4999 flow [2024-06-21 19:05:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:05:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:05:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-21 19:05:47,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612159329140461 [2024-06-21 19:05:47,224 INFO L175 Difference]: Start difference. First operand has 150 places, 273 transitions, 3730 flow. Second operand 9 states and 220 transitions. [2024-06-21 19:05:47,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 343 transitions, 4999 flow [2024-06-21 19:05:47,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 343 transitions, 4950 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-21 19:05:47,825 INFO L231 Difference]: Finished difference. Result has 158 places, 295 transitions, 4433 flow [2024-06-21 19:05:47,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3681, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4433, PETRI_PLACES=158, PETRI_TRANSITIONS=295} [2024-06-21 19:05:47,825 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 102 predicate places. [2024-06-21 19:05:47,826 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 295 transitions, 4433 flow [2024-06-21 19:05:47,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 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) [2024-06-21 19:05:47,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:47,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:47,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 19:05:47,826 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)] === [2024-06-21 19:05:47,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:47,827 INFO L85 PathProgramCache]: Analyzing trace with hash 756966406, now seen corresponding path program 1 times [2024-06-21 19:05:47,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:47,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627945735] [2024-06-21 19:05:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:49,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:49,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627945735] [2024-06-21 19:05:49,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627945735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:49,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:49,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:05:49,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276282225] [2024-06-21 19:05:49,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:49,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:05:49,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:49,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:05:49,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:05:49,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:05:49,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 295 transitions, 4433 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:49,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:49,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:05:49,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:53,009 INFO L124 PetriNetUnfolderBase]: 15665/22458 cut-off events. [2024-06-21 19:05:53,009 INFO L125 PetriNetUnfolderBase]: For 540029/540059 co-relation queries the response was YES. [2024-06-21 19:05:53,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136656 conditions, 22458 events. 15665/22458 cut-off events. For 540029/540059 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 135853 event pairs, 5818 based on Foata normal form. 28/22422 useless extension candidates. Maximal degree in co-relation 136577. Up to 21068 conditions per place. [2024-06-21 19:05:53,254 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 265 selfloop transitions, 90 changer transitions 0/362 dead transitions. [2024-06-21 19:05:53,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 362 transitions, 6025 flow [2024-06-21 19:05:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:05:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:05:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-21 19:05:53,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013477088948787 [2024-06-21 19:05:53,255 INFO L175 Difference]: Start difference. First operand has 158 places, 295 transitions, 4433 flow. Second operand 7 states and 186 transitions. [2024-06-21 19:05:53,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 362 transitions, 6025 flow [2024-06-21 19:05:54,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 362 transitions, 5785 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-21 19:05:54,153 INFO L231 Difference]: Finished difference. Result has 164 places, 322 transitions, 4905 flow [2024-06-21 19:05:54,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4205, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4905, PETRI_PLACES=164, PETRI_TRANSITIONS=322} [2024-06-21 19:05:54,153 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 108 predicate places. [2024-06-21 19:05:54,154 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 322 transitions, 4905 flow [2024-06-21 19:05:54,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:54,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:05:54,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:05:54,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 19:05:54,154 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:05:54,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:05:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash 757265308, now seen corresponding path program 1 times [2024-06-21 19:05:54,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:05:54,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97876482] [2024-06-21 19:05:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:05:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:05:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:05:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:05:55,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:05:55,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97876482] [2024-06-21 19:05:55,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97876482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:05:55,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:05:55,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:05:55,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82201405] [2024-06-21 19:05:55,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:05:55,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:05:55,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:05:55,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:05:55,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:05:55,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:05:55,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 322 transitions, 4905 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:05:55,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:05:55,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:05:55,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:05:59,812 INFO L124 PetriNetUnfolderBase]: 15743/22574 cut-off events. [2024-06-21 19:05:59,812 INFO L125 PetriNetUnfolderBase]: For 590969/590984 co-relation queries the response was YES. [2024-06-21 19:05:59,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142847 conditions, 22574 events. 15743/22574 cut-off events. For 590969/590984 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 136698 event pairs, 6016 based on Foata normal form. 10/22536 useless extension candidates. Maximal degree in co-relation 142763. Up to 21545 conditions per place. [2024-06-21 19:06:00,035 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 300 selfloop transitions, 59 changer transitions 0/366 dead transitions. [2024-06-21 19:06:00,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 366 transitions, 6138 flow [2024-06-21 19:06:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:06:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:06:00,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-21 19:06:00,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477088948787062 [2024-06-21 19:06:00,037 INFO L175 Difference]: Start difference. First operand has 164 places, 322 transitions, 4905 flow. Second operand 7 states and 177 transitions. [2024-06-21 19:06:00,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 366 transitions, 6138 flow [2024-06-21 19:06:01,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 366 transitions, 6087 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-21 19:06:01,160 INFO L231 Difference]: Finished difference. Result has 170 places, 334 transitions, 5197 flow [2024-06-21 19:06:01,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4854, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5197, PETRI_PLACES=170, PETRI_TRANSITIONS=334} [2024-06-21 19:06:01,161 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 114 predicate places. [2024-06-21 19:06:01,161 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 334 transitions, 5197 flow [2024-06-21 19:06:01,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:06:01,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:06:01,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:06:01,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 19:06:01,161 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:06:01,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:06:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash -624013828, now seen corresponding path program 2 times [2024-06-21 19:06:01,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:06:01,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922862213] [2024-06-21 19:06:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:06:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:06:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:06:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:06:02,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:06:02,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922862213] [2024-06-21 19:06:02,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922862213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:06:02,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:06:02,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:06:02,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174676637] [2024-06-21 19:06:02,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:06:02,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:06:02,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:06:02,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:06:02,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:06:02,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:06:02,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 334 transitions, 5197 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:06:02,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:06:02,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:06:02,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand