./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:26:16,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:26:16,192 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:26:16,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:26:16,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:26:16,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:26:16,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:26:16,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:26:16,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:26:16,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:26:16,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:26:16,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:26:16,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:26:16,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:26:16,227 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:26:16,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:26:16,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:26:16,228 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:26:16,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:26:16,228 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:26:16,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:26:16,229 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:26:16,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:26:16,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:26:16,229 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:26:16,229 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:26:16,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:26:16,229 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:26:16,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:26:16,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:26:16,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:26:16,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:26:16,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:26:16,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:26:16,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:26:16,231 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:26:16,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:26:16,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:26:16,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:26:16,232 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:26:16,232 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:26:16,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:26:16,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:26:16,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:26:16,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:26:16,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:26:16,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:26:16,479 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:26:16,479 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:26:16,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 22:26:16,577 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:26:16,577 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:26:16,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 22:26:17,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:26:17,934 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:26:17,935 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 22:26:17,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f512efc/927ca0ed55034f479035ec8d81277523/FLAGc4414baf6 [2024-06-27 22:26:17,964 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f512efc/927ca0ed55034f479035ec8d81277523 [2024-06-27 22:26:17,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:26:17,965 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:26:17,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:26:17,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:26:17,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:26:17,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:26:16" (1/2) ... [2024-06-27 22:26:17,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd333c2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:26:17, skipping insertion in model container [2024-06-27 22:26:17,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:26:16" (1/2) ... [2024-06-27 22:26:17,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50899fb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:26:17, skipping insertion in model container [2024-06-27 22:26:17,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:26:17" (2/2) ... [2024-06-27 22:26:17,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd333c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:17, skipping insertion in model container [2024-06-27 22:26:17,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:26:17" (2/2) ... [2024-06-27 22:26:17,973 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:26:17,995 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:26:17,996 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )a >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:26:17,996 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )a >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:26:17,996 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )a >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:26:17,997 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:26:17,997 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-27 22:26:18,035 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:26:18,225 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-06-27 22:26:18,425 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:26:18,436 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:26:18,468 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:26:18,590 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:26:18,629 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:26:18,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18 WrapperNode [2024-06-27 22:26:18,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:26:18,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:26:18,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:26:18,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:26:18,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,717 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2024-06-27 22:26:18,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:26:18,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:26:18,718 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:26:18,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:26:18,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,771 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:26:18,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,789 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:26:18,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:26:18,812 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:26:18,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:26:18,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (1/1) ... [2024-06-27 22:26:18,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:26:18,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:26:18,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:26:18,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:26:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:26:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:26:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:26:18,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:26:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:26:18,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:26:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:26:18,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:26:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:26:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:26:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:26:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:26:18,894 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:26:19,027 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:26:19,031 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:26:19,385 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:26:19,385 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:26:19,501 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:26:19,501 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:26:19,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:26:19 BoogieIcfgContainer [2024-06-27 22:26:19,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:26:19,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:26:19,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:26:19,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:26:19,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:26:16" (1/4) ... [2024-06-27 22:26:19,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334de92e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:26:19, skipping insertion in model container [2024-06-27 22:26:19,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:26:17" (2/4) ... [2024-06-27 22:26:19,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334de92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:26:19, skipping insertion in model container [2024-06-27 22:26:19,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:26:18" (3/4) ... [2024-06-27 22:26:19,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334de92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:26:19, skipping insertion in model container [2024-06-27 22:26:19,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:26:19" (4/4) ... [2024-06-27 22:26:19,508 INFO L112 eAbstractionObserver]: Analyzing ICFG mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 22:26:19,521 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:26:19,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:26:19,522 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:26:19,556 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:26:19,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:26:19,599 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 22:26:19,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:26:19,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 22:26:19,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:26:19,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 22:26:19,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:26:19,615 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;@46610aa8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:26:19,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:26:19,619 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:26:19,619 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:26:19,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:26:19,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:19,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:26:19,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:19,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash 351715282, now seen corresponding path program 1 times [2024-06-27 22:26:19,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:19,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464703261] [2024-06-27 22:26:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:19,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:20,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:20,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464703261] [2024-06-27 22:26:20,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464703261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:20,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:20,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:26:20,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711829107] [2024-06-27 22:26:20,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:20,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:26:20,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:20,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:26:20,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:26:20,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:26:20,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:20,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:20,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:26:20,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:21,434 INFO L124 PetriNetUnfolderBase]: 4158/6790 cut-off events. [2024-06-27 22:26:21,435 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-27 22:26:21,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12835 conditions, 6790 events. 4158/6790 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 44363 event pairs, 3456 based on Foata normal form. 210/6461 useless extension candidates. Maximal degree in co-relation 12823. Up to 5955 conditions per place. [2024-06-27 22:26:21,490 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 43 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-06-27 22:26:21,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 227 flow [2024-06-27 22:26:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:26:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:26:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 22:26:21,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2024-06-27 22:26:21,502 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 98 transitions. [2024-06-27 22:26:21,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 227 flow [2024-06-27 22:26:21,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:26:21,510 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 126 flow [2024-06-27 22:26:21,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 22:26:21,514 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 22:26:21,514 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 126 flow [2024-06-27 22:26:21,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:21,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:21,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:21,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:26:21,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:21,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:21,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1303996367, now seen corresponding path program 1 times [2024-06-27 22:26:21,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:21,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516813997] [2024-06-27 22:26:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:21,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:22,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:22,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516813997] [2024-06-27 22:26:22,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516813997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:22,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:22,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:26:22,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065778397] [2024-06-27 22:26:22,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:22,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:26:22,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:22,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:26:22,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:26:22,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:26:22,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:22,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:22,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:26:22,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:22,887 INFO L124 PetriNetUnfolderBase]: 4731/6980 cut-off events. [2024-06-27 22:26:22,888 INFO L125 PetriNetUnfolderBase]: For 926/926 co-relation queries the response was YES. [2024-06-27 22:26:22,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15307 conditions, 6980 events. 4731/6980 cut-off events. For 926/926 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 39649 event pairs, 2525 based on Foata normal form. 3/6724 useless extension candidates. Maximal degree in co-relation 15295. Up to 6732 conditions per place. [2024-06-27 22:26:22,919 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 56 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-06-27 22:26:22,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 318 flow [2024-06-27 22:26:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:26:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:26:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-27 22:26:22,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-06-27 22:26:22,921 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 126 flow. Second operand 4 states and 123 transitions. [2024-06-27 22:26:22,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 318 flow [2024-06-27 22:26:22,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:26:22,926 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 164 flow [2024-06-27 22:26:22,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 22:26:22,927 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 22:26:22,927 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 164 flow [2024-06-27 22:26:22,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:22,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:22,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:22,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:26:22,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:22,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:22,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1769180589, now seen corresponding path program 1 times [2024-06-27 22:26:22,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:22,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625010832] [2024-06-27 22:26:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:22,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:23,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:23,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625010832] [2024-06-27 22:26:23,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625010832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:23,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:23,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:26:23,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761969477] [2024-06-27 22:26:23,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:23,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:26:23,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:26:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:26:23,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:26:23,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:23,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:23,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:26:23,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:24,393 INFO L124 PetriNetUnfolderBase]: 4662/7466 cut-off events. [2024-06-27 22:26:24,394 INFO L125 PetriNetUnfolderBase]: For 2804/2804 co-relation queries the response was YES. [2024-06-27 22:26:24,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17068 conditions, 7466 events. 4662/7466 cut-off events. For 2804/2804 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 47723 event pairs, 2769 based on Foata normal form. 5/7024 useless extension candidates. Maximal degree in co-relation 17054. Up to 6519 conditions per place. [2024-06-27 22:26:24,428 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 74 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-27 22:26:24,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 101 transitions, 494 flow [2024-06-27 22:26:24,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:26:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:26:24,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-06-27 22:26:24,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-27 22:26:24,431 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 164 flow. Second operand 5 states and 162 transitions. [2024-06-27 22:26:24,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 101 transitions, 494 flow [2024-06-27 22:26:24,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 480 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:26:24,434 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 269 flow [2024-06-27 22:26:24,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-27 22:26:24,434 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-27 22:26:24,435 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 269 flow [2024-06-27 22:26:24,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:24,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:24,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:24,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:26:24,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:24,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1481630770, now seen corresponding path program 1 times [2024-06-27 22:26:24,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:24,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236961387] [2024-06-27 22:26:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:24,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:25,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:25,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236961387] [2024-06-27 22:26:25,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236961387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:25,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:25,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:26:25,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733327323] [2024-06-27 22:26:25,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:25,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:26:25,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:25,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:26:25,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:26:25,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:26:25,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 269 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) [2024-06-27 22:26:25,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:25,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:26:25,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:26,137 INFO L124 PetriNetUnfolderBase]: 4661/7446 cut-off events. [2024-06-27 22:26:26,137 INFO L125 PetriNetUnfolderBase]: For 9605/9610 co-relation queries the response was YES. [2024-06-27 22:26:26,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19982 conditions, 7446 events. 4661/7446 cut-off events. For 9605/9610 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 47363 event pairs, 2205 based on Foata normal form. 43/7241 useless extension candidates. Maximal degree in co-relation 19965. Up to 6428 conditions per place. [2024-06-27 22:26:26,298 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 83 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2024-06-27 22:26:26,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 113 transitions, 623 flow [2024-06-27 22:26:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:26:26,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:26:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-27 22:26:26,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-27 22:26:26,300 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 269 flow. Second operand 6 states and 186 transitions. [2024-06-27 22:26:26,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 113 transitions, 623 flow [2024-06-27 22:26:26,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 113 transitions, 615 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 22:26:26,305 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 327 flow [2024-06-27 22:26:26,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-27 22:26:26,306 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-27 22:26:26,306 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 327 flow [2024-06-27 22:26:26,306 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) [2024-06-27 22:26:26,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:26,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:26,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:26:26,306 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:26,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash -10719685, now seen corresponding path program 1 times [2024-06-27 22:26:26,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:26,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559751076] [2024-06-27 22:26:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:26,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:27,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:27,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559751076] [2024-06-27 22:26:27,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559751076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:27,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:27,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:26:27,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108308802] [2024-06-27 22:26:27,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:27,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:26:27,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:27,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:26:27,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:26:27,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:26:27,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 327 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:27,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:27,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:26:27,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:28,021 INFO L124 PetriNetUnfolderBase]: 4562/6934 cut-off events. [2024-06-27 22:26:28,021 INFO L125 PetriNetUnfolderBase]: For 12099/12099 co-relation queries the response was YES. [2024-06-27 22:26:28,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20807 conditions, 6934 events. 4562/6934 cut-off events. For 12099/12099 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 41175 event pairs, 1502 based on Foata normal form. 2/6879 useless extension candidates. Maximal degree in co-relation 20786. Up to 6508 conditions per place. [2024-06-27 22:26:28,056 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 67 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-06-27 22:26:28,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 87 transitions, 545 flow [2024-06-27 22:26:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:26:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:26:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-27 22:26:28,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:26:28,057 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 327 flow. Second operand 5 states and 130 transitions. [2024-06-27 22:26:28,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 87 transitions, 545 flow [2024-06-27 22:26:28,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 493 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:26:28,064 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 324 flow [2024-06-27 22:26:28,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-06-27 22:26:28,065 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-06-27 22:26:28,065 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 324 flow [2024-06-27 22:26:28,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:28,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:28,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:28,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:26:28,066 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:28,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash -332799365, now seen corresponding path program 1 times [2024-06-27 22:26:28,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:28,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280931228] [2024-06-27 22:26:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:28,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:29,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:29,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280931228] [2024-06-27 22:26:29,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280931228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:29,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:29,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:26:29,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292809655] [2024-06-27 22:26:29,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:29,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:26:29,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:29,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:26:29,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:26:29,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:26:29,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 324 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) [2024-06-27 22:26:29,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:29,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:26:29,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:30,222 INFO L124 PetriNetUnfolderBase]: 4546/7416 cut-off events. [2024-06-27 22:26:30,222 INFO L125 PetriNetUnfolderBase]: For 13394/13394 co-relation queries the response was YES. [2024-06-27 22:26:30,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21061 conditions, 7416 events. 4546/7416 cut-off events. For 13394/13394 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 48375 event pairs, 1965 based on Foata normal form. 6/7207 useless extension candidates. Maximal degree in co-relation 21036. Up to 6442 conditions per place. [2024-06-27 22:26:30,259 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 80 selfloop transitions, 20 changer transitions 0/110 dead transitions. [2024-06-27 22:26:30,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 695 flow [2024-06-27 22:26:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:26:30,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:26:30,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:26:30,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 22:26:30,274 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 324 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:26:30,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 695 flow [2024-06-27 22:26:30,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 663 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:26:30,283 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 487 flow [2024-06-27 22:26:30,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=487, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2024-06-27 22:26:30,285 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-27 22:26:30,286 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 487 flow [2024-06-27 22:26:30,286 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) [2024-06-27 22:26:30,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:30,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:30,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:26:30,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:30,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1232179710, now seen corresponding path program 1 times [2024-06-27 22:26:30,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:30,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568290891] [2024-06-27 22:26:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:30,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:31,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:31,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568290891] [2024-06-27 22:26:31,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568290891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:31,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:31,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:26:31,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091294646] [2024-06-27 22:26:31,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:31,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:26:31,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:31,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:26:31,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:26:31,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:31,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 487 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:31,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:31,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:31,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:32,578 INFO L124 PetriNetUnfolderBase]: 5411/8181 cut-off events. [2024-06-27 22:26:32,579 INFO L125 PetriNetUnfolderBase]: For 21060/21074 co-relation queries the response was YES. [2024-06-27 22:26:32,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26251 conditions, 8181 events. 5411/8181 cut-off events. For 21060/21074 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 48408 event pairs, 1955 based on Foata normal form. 13/8122 useless extension candidates. Maximal degree in co-relation 26221. Up to 7437 conditions per place. [2024-06-27 22:26:32,640 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 92 selfloop transitions, 34 changer transitions 0/135 dead transitions. [2024-06-27 22:26:32,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 135 transitions, 991 flow [2024-06-27 22:26:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:26:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:26:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-27 22:26:32,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-27 22:26:32,642 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 487 flow. Second operand 6 states and 164 transitions. [2024-06-27 22:26:32,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 135 transitions, 991 flow [2024-06-27 22:26:32,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 135 transitions, 968 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-27 22:26:32,669 INFO L231 Difference]: Finished difference. Result has 83 places, 95 transitions, 653 flow [2024-06-27 22:26:32,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=653, PETRI_PLACES=83, PETRI_TRANSITIONS=95} [2024-06-27 22:26:32,670 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-27 22:26:32,670 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 95 transitions, 653 flow [2024-06-27 22:26:32,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:32,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:32,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:32,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:26:32,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:32,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:32,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1217240190, now seen corresponding path program 2 times [2024-06-27 22:26:32,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:32,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727071009] [2024-06-27 22:26:32,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:32,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:33,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:33,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727071009] [2024-06-27 22:26:33,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727071009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:33,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:33,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:26:33,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833863331] [2024-06-27 22:26:33,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:33,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:26:33,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:26:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:26:33,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:33,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 95 transitions, 653 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:33,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:33,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:33,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:34,909 INFO L124 PetriNetUnfolderBase]: 5403/8146 cut-off events. [2024-06-27 22:26:34,909 INFO L125 PetriNetUnfolderBase]: For 23126/23128 co-relation queries the response was YES. [2024-06-27 22:26:34,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26867 conditions, 8146 events. 5403/8146 cut-off events. For 23126/23128 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 47887 event pairs, 1951 based on Foata normal form. 4/8077 useless extension candidates. Maximal degree in co-relation 26832. Up to 7429 conditions per place. [2024-06-27 22:26:34,953 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 84 selfloop transitions, 38 changer transitions 0/131 dead transitions. [2024-06-27 22:26:34,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 131 transitions, 1027 flow [2024-06-27 22:26:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:26:34,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:26:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-27 22:26:34,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 22:26:34,956 INFO L175 Difference]: Start difference. First operand has 83 places, 95 transitions, 653 flow. Second operand 6 states and 160 transitions. [2024-06-27 22:26:34,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 131 transitions, 1027 flow [2024-06-27 22:26:34,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 131 transitions, 993 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 22:26:34,973 INFO L231 Difference]: Finished difference. Result has 88 places, 96 transitions, 714 flow [2024-06-27 22:26:34,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=714, PETRI_PLACES=88, PETRI_TRANSITIONS=96} [2024-06-27 22:26:34,974 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2024-06-27 22:26:34,974 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 96 transitions, 714 flow [2024-06-27 22:26:34,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:34,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:34,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:34,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:26:34,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:34,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:34,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1121525960, now seen corresponding path program 3 times [2024-06-27 22:26:34,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:34,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466965744] [2024-06-27 22:26:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:35,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:35,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466965744] [2024-06-27 22:26:35,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466965744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:35,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:35,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:26:35,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165547389] [2024-06-27 22:26:35,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:35,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:26:35,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:35,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:26:35,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:26:35,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:35,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 96 transitions, 714 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:35,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:35,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:35,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:36,819 INFO L124 PetriNetUnfolderBase]: 5586/8433 cut-off events. [2024-06-27 22:26:36,819 INFO L125 PetriNetUnfolderBase]: For 27321/27337 co-relation queries the response was YES. [2024-06-27 22:26:36,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28575 conditions, 8433 events. 5586/8433 cut-off events. For 27321/27337 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 49989 event pairs, 1939 based on Foata normal form. 15/8374 useless extension candidates. Maximal degree in co-relation 28537. Up to 7562 conditions per place. [2024-06-27 22:26:36,954 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 99 selfloop transitions, 50 changer transitions 0/158 dead transitions. [2024-06-27 22:26:36,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 158 transitions, 1303 flow [2024-06-27 22:26:36,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:26:36,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:26:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-06-27 22:26:36,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6006944444444444 [2024-06-27 22:26:36,967 INFO L175 Difference]: Start difference. First operand has 88 places, 96 transitions, 714 flow. Second operand 6 states and 173 transitions. [2024-06-27 22:26:36,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 158 transitions, 1303 flow [2024-06-27 22:26:36,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 158 transitions, 1245 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 22:26:36,999 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 980 flow [2024-06-27 22:26:36,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=980, PETRI_PLACES=94, PETRI_TRANSITIONS=113} [2024-06-27 22:26:37,000 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-27 22:26:37,000 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 980 flow [2024-06-27 22:26:37,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:37,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:37,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:37,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:26:37,005 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:37,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:37,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1722196346, now seen corresponding path program 1 times [2024-06-27 22:26:37,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:37,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075546937] [2024-06-27 22:26:37,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:37,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:38,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:38,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075546937] [2024-06-27 22:26:38,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075546937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:38,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:38,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:26:38,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067475168] [2024-06-27 22:26:38,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:38,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:26:38,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:38,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:26:38,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:26:38,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:38,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 113 transitions, 980 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) [2024-06-27 22:26:38,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:38,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:38,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:39,787 INFO L124 PetriNetUnfolderBase]: 5840/9173 cut-off events. [2024-06-27 22:26:39,787 INFO L125 PetriNetUnfolderBase]: For 35473/35475 co-relation queries the response was YES. [2024-06-27 22:26:39,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31472 conditions, 9173 events. 5840/9173 cut-off events. For 35473/35475 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 57536 event pairs, 1712 based on Foata normal form. 14/8943 useless extension candidates. Maximal degree in co-relation 31431. Up to 7511 conditions per place. [2024-06-27 22:26:39,836 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 150 selfloop transitions, 71 changer transitions 0/230 dead transitions. [2024-06-27 22:26:39,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 230 transitions, 2304 flow [2024-06-27 22:26:39,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:26:39,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:26:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 22:26:39,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:26:39,842 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 980 flow. Second operand 9 states and 234 transitions. [2024-06-27 22:26:39,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 230 transitions, 2304 flow [2024-06-27 22:26:39,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 230 transitions, 2110 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 22:26:39,890 INFO L231 Difference]: Finished difference. Result has 103 places, 166 transitions, 1633 flow [2024-06-27 22:26:39,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1633, PETRI_PLACES=103, PETRI_TRANSITIONS=166} [2024-06-27 22:26:39,891 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2024-06-27 22:26:39,891 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 166 transitions, 1633 flow [2024-06-27 22:26:39,891 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) [2024-06-27 22:26:39,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:39,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:39,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:26:39,892 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:39,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1521827846, now seen corresponding path program 2 times [2024-06-27 22:26:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:39,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066478467] [2024-06-27 22:26:39,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:39,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:41,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:41,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066478467] [2024-06-27 22:26:41,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066478467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:41,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:41,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:26:41,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198369049] [2024-06-27 22:26:41,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:41,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:26:41,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:41,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:26:41,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:26:41,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:41,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 166 transitions, 1633 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) [2024-06-27 22:26:41,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:41,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:41,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:42,743 INFO L124 PetriNetUnfolderBase]: 5956/9321 cut-off events. [2024-06-27 22:26:42,744 INFO L125 PetriNetUnfolderBase]: For 50863/50867 co-relation queries the response was YES. [2024-06-27 22:26:42,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36137 conditions, 9321 events. 5956/9321 cut-off events. For 50863/50867 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 58135 event pairs, 1690 based on Foata normal form. 8/9073 useless extension candidates. Maximal degree in co-relation 36090. Up to 7575 conditions per place. [2024-06-27 22:26:42,808 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 149 selfloop transitions, 90 changer transitions 0/248 dead transitions. [2024-06-27 22:26:42,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 248 transitions, 2700 flow [2024-06-27 22:26:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:26:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:26:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 22:26:42,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439814814814815 [2024-06-27 22:26:42,810 INFO L175 Difference]: Start difference. First operand has 103 places, 166 transitions, 1633 flow. Second operand 9 states and 235 transitions. [2024-06-27 22:26:42,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 248 transitions, 2700 flow [2024-06-27 22:26:42,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 248 transitions, 2628 flow, removed 34 selfloop flow, removed 1 redundant places. [2024-06-27 22:26:42,872 INFO L231 Difference]: Finished difference. Result has 114 places, 188 transitions, 2105 flow [2024-06-27 22:26:42,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2105, PETRI_PLACES=114, PETRI_TRANSITIONS=188} [2024-06-27 22:26:42,873 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-27 22:26:42,873 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 188 transitions, 2105 flow [2024-06-27 22:26:42,873 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) [2024-06-27 22:26:42,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:42,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:42,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:26:42,874 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:42,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1992586406, now seen corresponding path program 3 times [2024-06-27 22:26:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38374387] [2024-06-27 22:26:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:44,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:44,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38374387] [2024-06-27 22:26:44,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38374387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:44,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:44,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:26:44,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782556470] [2024-06-27 22:26:44,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:44,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:26:44,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:44,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:26:44,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:26:44,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:44,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 188 transitions, 2105 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) [2024-06-27 22:26:44,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:44,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:44,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:45,443 INFO L124 PetriNetUnfolderBase]: 5944/9306 cut-off events. [2024-06-27 22:26:45,443 INFO L125 PetriNetUnfolderBase]: For 58394/58398 co-relation queries the response was YES. [2024-06-27 22:26:45,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37971 conditions, 9306 events. 5944/9306 cut-off events. For 58394/58398 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 58094 event pairs, 1690 based on Foata normal form. 8/9057 useless extension candidates. Maximal degree in co-relation 37917. Up to 7571 conditions per place. [2024-06-27 22:26:45,518 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 140 selfloop transitions, 96 changer transitions 0/245 dead transitions. [2024-06-27 22:26:45,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 245 transitions, 2881 flow [2024-06-27 22:26:45,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:26:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:26:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-27 22:26:45,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-27 22:26:45,520 INFO L175 Difference]: Start difference. First operand has 114 places, 188 transitions, 2105 flow. Second operand 9 states and 231 transitions. [2024-06-27 22:26:45,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 245 transitions, 2881 flow [2024-06-27 22:26:45,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 245 transitions, 2807 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 22:26:45,601 INFO L231 Difference]: Finished difference. Result has 120 places, 191 transitions, 2299 flow [2024-06-27 22:26:45,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2299, PETRI_PLACES=120, PETRI_TRANSITIONS=191} [2024-06-27 22:26:45,601 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-27 22:26:45,602 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 191 transitions, 2299 flow [2024-06-27 22:26:45,602 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) [2024-06-27 22:26:45,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:45,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:45,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:26:45,602 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:45,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:45,603 INFO L85 PathProgramCache]: Analyzing trace with hash -393265732, now seen corresponding path program 4 times [2024-06-27 22:26:45,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:45,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120173689] [2024-06-27 22:26:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:45,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:46,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:46,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120173689] [2024-06-27 22:26:46,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120173689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:46,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:46,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:26:46,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176406852] [2024-06-27 22:26:46,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:46,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:26:46,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:46,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:26:46,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:26:46,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:46,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 191 transitions, 2299 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) [2024-06-27 22:26:46,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:46,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:46,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:48,140 INFO L124 PetriNetUnfolderBase]: 6298/9786 cut-off events. [2024-06-27 22:26:48,140 INFO L125 PetriNetUnfolderBase]: For 65677/65681 co-relation queries the response was YES. [2024-06-27 22:26:48,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41663 conditions, 9786 events. 6298/9786 cut-off events. For 65677/65681 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 60659 event pairs, 1688 based on Foata normal form. 12/9558 useless extension candidates. Maximal degree in co-relation 41605. Up to 7907 conditions per place. [2024-06-27 22:26:48,212 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 174 selfloop transitions, 113 changer transitions 0/296 dead transitions. [2024-06-27 22:26:48,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 296 transitions, 3692 flow [2024-06-27 22:26:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:26:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:26:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-27 22:26:48,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-27 22:26:48,214 INFO L175 Difference]: Start difference. First operand has 120 places, 191 transitions, 2299 flow. Second operand 9 states and 246 transitions. [2024-06-27 22:26:48,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 296 transitions, 3692 flow [2024-06-27 22:26:48,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 296 transitions, 3423 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 22:26:48,312 INFO L231 Difference]: Finished difference. Result has 127 places, 230 transitions, 2812 flow [2024-06-27 22:26:48,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2812, PETRI_PLACES=127, PETRI_TRANSITIONS=230} [2024-06-27 22:26:48,316 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-27 22:26:48,316 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 230 transitions, 2812 flow [2024-06-27 22:26:48,317 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) [2024-06-27 22:26:48,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:48,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:48,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:26:48,317 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:48,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:48,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1521581768, now seen corresponding path program 1 times [2024-06-27 22:26:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:48,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715634693] [2024-06-27 22:26:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:48,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:50,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:50,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715634693] [2024-06-27 22:26:50,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715634693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:50,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:50,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:26:50,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945206645] [2024-06-27 22:26:50,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:50,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:26:50,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:50,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:26:50,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:26:50,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:50,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 230 transitions, 2812 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) [2024-06-27 22:26:50,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:50,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:50,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:51,832 INFO L124 PetriNetUnfolderBase]: 6334/9928 cut-off events. [2024-06-27 22:26:51,832 INFO L125 PetriNetUnfolderBase]: For 69940/69944 co-relation queries the response was YES. [2024-06-27 22:26:51,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42191 conditions, 9928 events. 6334/9928 cut-off events. For 69940/69944 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 62489 event pairs, 2048 based on Foata normal form. 25/9710 useless extension candidates. Maximal degree in co-relation 42129. Up to 8719 conditions per place. [2024-06-27 22:26:51,908 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 245 selfloop transitions, 20 changer transitions 0/274 dead transitions. [2024-06-27 22:26:51,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 274 transitions, 3512 flow [2024-06-27 22:26:51,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:26:51,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:26:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-27 22:26:51,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 22:26:51,909 INFO L175 Difference]: Start difference. First operand has 127 places, 230 transitions, 2812 flow. Second operand 9 states and 208 transitions. [2024-06-27 22:26:51,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 274 transitions, 3512 flow [2024-06-27 22:26:51,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 274 transitions, 3460 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-27 22:26:51,993 INFO L231 Difference]: Finished difference. Result has 135 places, 230 transitions, 2832 flow [2024-06-27 22:26:51,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2832, PETRI_PLACES=135, PETRI_TRANSITIONS=230} [2024-06-27 22:26:51,994 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-27 22:26:51,994 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 230 transitions, 2832 flow [2024-06-27 22:26:51,994 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) [2024-06-27 22:26:51,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:51,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:51,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:26:51,995 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:51,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash 944932578, now seen corresponding path program 1 times [2024-06-27 22:26:51,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:51,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449988928] [2024-06-27 22:26:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:51,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:52,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:52,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449988928] [2024-06-27 22:26:52,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449988928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:52,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:52,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:26:52,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553654904] [2024-06-27 22:26:52,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:52,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:26:52,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:26:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:26:52,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:26:52,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 230 transitions, 2832 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) [2024-06-27 22:26:52,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:52,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:26:52,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:53,877 INFO L124 PetriNetUnfolderBase]: 5650/9011 cut-off events. [2024-06-27 22:26:53,878 INFO L125 PetriNetUnfolderBase]: For 71686/71690 co-relation queries the response was YES. [2024-06-27 22:26:53,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39965 conditions, 9011 events. 5650/9011 cut-off events. For 71686/71690 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 57488 event pairs, 2151 based on Foata normal form. 2/8770 useless extension candidates. Maximal degree in co-relation 39899. Up to 8017 conditions per place. [2024-06-27 22:26:53,961 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 227 selfloop transitions, 12 changer transitions 0/249 dead transitions. [2024-06-27 22:26:53,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 249 transitions, 3437 flow [2024-06-27 22:26:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:26:53,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:26:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 22:26:53,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:26:53,962 INFO L175 Difference]: Start difference. First operand has 135 places, 230 transitions, 2832 flow. Second operand 5 states and 120 transitions. [2024-06-27 22:26:53,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 249 transitions, 3437 flow [2024-06-27 22:26:54,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 249 transitions, 3363 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 22:26:54,069 INFO L231 Difference]: Finished difference. Result has 136 places, 238 transitions, 2899 flow [2024-06-27 22:26:54,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2899, PETRI_PLACES=136, PETRI_TRANSITIONS=238} [2024-06-27 22:26:54,071 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-27 22:26:54,071 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 238 transitions, 2899 flow [2024-06-27 22:26:54,071 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) [2024-06-27 22:26:54,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:54,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:54,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:26:54,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:54,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1647668052, now seen corresponding path program 1 times [2024-06-27 22:26:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:54,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301208482] [2024-06-27 22:26:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:54,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:55,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:55,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301208482] [2024-06-27 22:26:55,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301208482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:55,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:55,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:26:55,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261916545] [2024-06-27 22:26:55,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:55,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:26:55,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:55,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:26:55,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:26:55,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:55,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 238 transitions, 2899 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:55,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:55,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:55,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:56,857 INFO L124 PetriNetUnfolderBase]: 6419/10075 cut-off events. [2024-06-27 22:26:56,858 INFO L125 PetriNetUnfolderBase]: For 85961/85969 co-relation queries the response was YES. [2024-06-27 22:26:56,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45561 conditions, 10075 events. 6419/10075 cut-off events. For 85961/85969 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 63641 event pairs, 1817 based on Foata normal form. 18/9858 useless extension candidates. Maximal degree in co-relation 45493. Up to 7948 conditions per place. [2024-06-27 22:26:56,950 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 162 selfloop transitions, 129 changer transitions 0/300 dead transitions. [2024-06-27 22:26:56,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 300 transitions, 3969 flow [2024-06-27 22:26:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:26:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:26:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-27 22:26:56,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5598958333333334 [2024-06-27 22:26:56,952 INFO L175 Difference]: Start difference. First operand has 136 places, 238 transitions, 2899 flow. Second operand 8 states and 215 transitions. [2024-06-27 22:26:56,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 300 transitions, 3969 flow [2024-06-27 22:26:57,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 300 transitions, 3854 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 22:26:57,084 INFO L231 Difference]: Finished difference. Result has 144 places, 249 transitions, 3313 flow [2024-06-27 22:26:57,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3313, PETRI_PLACES=144, PETRI_TRANSITIONS=249} [2024-06-27 22:26:57,085 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 90 predicate places. [2024-06-27 22:26:57,086 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 249 transitions, 3313 flow [2024-06-27 22:26:57,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:57,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:57,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:57,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:26:57,086 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:57,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1647673632, now seen corresponding path program 2 times [2024-06-27 22:26:57,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:57,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483722686] [2024-06-27 22:26:57,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:57,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:58,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:58,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483722686] [2024-06-27 22:26:58,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483722686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:58,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:58,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:26:58,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315451648] [2024-06-27 22:26:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:58,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:26:58,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:58,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:26:58,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:26:58,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:58,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 249 transitions, 3313 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:58,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:58,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:58,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:00,001 INFO L124 PetriNetUnfolderBase]: 6515/10207 cut-off events. [2024-06-27 22:27:00,002 INFO L125 PetriNetUnfolderBase]: For 99208/99212 co-relation queries the response was YES. [2024-06-27 22:27:00,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48065 conditions, 10207 events. 6515/10207 cut-off events. For 99208/99212 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 64231 event pairs, 1811 based on Foata normal form. 10/9982 useless extension candidates. Maximal degree in co-relation 47992. Up to 8014 conditions per place. [2024-06-27 22:27:00,113 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 161 selfloop transitions, 137 changer transitions 0/307 dead transitions. [2024-06-27 22:27:00,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 307 transitions, 4403 flow [2024-06-27 22:27:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:27:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:27:00,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 22:27:00,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-27 22:27:00,115 INFO L175 Difference]: Start difference. First operand has 144 places, 249 transitions, 3313 flow. Second operand 8 states and 212 transitions. [2024-06-27 22:27:00,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 307 transitions, 4403 flow [2024-06-27 22:27:00,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 307 transitions, 4219 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 22:27:00,282 INFO L231 Difference]: Finished difference. Result has 149 places, 259 transitions, 3597 flow [2024-06-27 22:27:00,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3597, PETRI_PLACES=149, PETRI_TRANSITIONS=259} [2024-06-27 22:27:00,282 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-27 22:27:00,283 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 259 transitions, 3597 flow [2024-06-27 22:27:00,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:00,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:00,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:00,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:27:00,283 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:00,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash 106446378, now seen corresponding path program 1 times [2024-06-27 22:27:00,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:00,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040038436] [2024-06-27 22:27:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:00,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:00,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:00,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040038436] [2024-06-27 22:27:00,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040038436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:00,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:00,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:27:00,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665017189] [2024-06-27 22:27:00,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:00,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:27:00,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:00,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:27:00,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:27:00,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 48 [2024-06-27 22:27:00,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 259 transitions, 3597 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:00,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:00,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 48 [2024-06-27 22:27:00,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:00,892 INFO L124 PetriNetUnfolderBase]: 2132/4348 cut-off events. [2024-06-27 22:27:00,892 INFO L125 PetriNetUnfolderBase]: For 54782/55839 co-relation queries the response was YES. [2024-06-27 22:27:00,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17182 conditions, 4348 events. 2132/4348 cut-off events. For 54782/55839 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 34135 event pairs, 445 based on Foata normal form. 427/4406 useless extension candidates. Maximal degree in co-relation 17133. Up to 2151 conditions per place. [2024-06-27 22:27:00,932 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 60 selfloop transitions, 49 changer transitions 0/237 dead transitions. [2024-06-27 22:27:00,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 237 transitions, 3386 flow [2024-06-27 22:27:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:27:00,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:27:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-27 22:27:00,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-27 22:27:00,935 INFO L175 Difference]: Start difference. First operand has 149 places, 259 transitions, 3597 flow. Second operand 3 states and 108 transitions. [2024-06-27 22:27:00,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 237 transitions, 3386 flow [2024-06-27 22:27:00,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 237 transitions, 3201 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 22:27:00,981 INFO L231 Difference]: Finished difference. Result has 137 places, 228 transitions, 3055 flow [2024-06-27 22:27:00,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3055, PETRI_PLACES=137, PETRI_TRANSITIONS=228} [2024-06-27 22:27:00,981 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-27 22:27:00,981 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 228 transitions, 3055 flow [2024-06-27 22:27:00,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:00,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:00,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:00,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:27:00,982 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:00,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash 583296404, now seen corresponding path program 3 times [2024-06-27 22:27:00,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:00,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022204263] [2024-06-27 22:27:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:00,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:02,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:02,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022204263] [2024-06-27 22:27:02,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022204263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:02,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:02,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:27:02,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540362092] [2024-06-27 22:27:02,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:02,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:27:02,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:02,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:27:02,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:27:02,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:02,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 228 transitions, 3055 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:02,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:02,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:02,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:03,662 INFO L124 PetriNetUnfolderBase]: 5731/9011 cut-off events. [2024-06-27 22:27:03,662 INFO L125 PetriNetUnfolderBase]: For 79105/79115 co-relation queries the response was YES. [2024-06-27 22:27:03,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40099 conditions, 9011 events. 5731/9011 cut-off events. For 79105/79115 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 55620 event pairs, 1558 based on Foata normal form. 14/8813 useless extension candidates. Maximal degree in co-relation 40053. Up to 7235 conditions per place. [2024-06-27 22:27:03,745 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 150 selfloop transitions, 111 changer transitions 1/271 dead transitions. [2024-06-27 22:27:03,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 271 transitions, 3842 flow [2024-06-27 22:27:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:27:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:27:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 22:27:03,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-27 22:27:03,747 INFO L175 Difference]: Start difference. First operand has 137 places, 228 transitions, 3055 flow. Second operand 7 states and 179 transitions. [2024-06-27 22:27:03,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 271 transitions, 3842 flow [2024-06-27 22:27:03,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 271 transitions, 3720 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:27:03,857 INFO L231 Difference]: Finished difference. Result has 143 places, 231 transitions, 3260 flow [2024-06-27 22:27:03,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2933, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3260, PETRI_PLACES=143, PETRI_TRANSITIONS=231} [2024-06-27 22:27:03,858 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-27 22:27:03,858 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 231 transitions, 3260 flow [2024-06-27 22:27:03,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:03,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:03,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:03,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:27:03,858 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:03,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash 708852820, now seen corresponding path program 4 times [2024-06-27 22:27:03,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:03,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783561176] [2024-06-27 22:27:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:03,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:04,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:04,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783561176] [2024-06-27 22:27:04,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783561176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:04,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:04,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:27:04,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527839019] [2024-06-27 22:27:04,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:04,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:27:04,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:04,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:27:04,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:27:04,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:04,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 231 transitions, 3260 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:04,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:04,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:04,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:06,319 INFO L124 PetriNetUnfolderBase]: 5358/8514 cut-off events. [2024-06-27 22:27:06,320 INFO L125 PetriNetUnfolderBase]: For 85629/85635 co-relation queries the response was YES. [2024-06-27 22:27:06,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40190 conditions, 8514 events. 5358/8514 cut-off events. For 85629/85635 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 52461 event pairs, 1313 based on Foata normal form. 10/8322 useless extension candidates. Maximal degree in co-relation 40142. Up to 6600 conditions per place. [2024-06-27 22:27:06,386 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 158 selfloop transitions, 143 changer transitions 0/310 dead transitions. [2024-06-27 22:27:06,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 310 transitions, 4632 flow [2024-06-27 22:27:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:27:06,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:27:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-27 22:27:06,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-27 22:27:06,388 INFO L175 Difference]: Start difference. First operand has 143 places, 231 transitions, 3260 flow. Second operand 7 states and 198 transitions. [2024-06-27 22:27:06,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 310 transitions, 4632 flow [2024-06-27 22:27:06,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 310 transitions, 4475 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 22:27:06,484 INFO L231 Difference]: Finished difference. Result has 148 places, 263 transitions, 4063 flow [2024-06-27 22:27:06,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3134, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4063, PETRI_PLACES=148, PETRI_TRANSITIONS=263} [2024-06-27 22:27:06,485 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-27 22:27:06,485 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 263 transitions, 4063 flow [2024-06-27 22:27:06,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:06,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:06,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:06,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:27:06,486 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:06,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1070132222, now seen corresponding path program 5 times [2024-06-27 22:27:06,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:06,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759601001] [2024-06-27 22:27:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:07,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:07,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759601001] [2024-06-27 22:27:07,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759601001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:07,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:07,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:27:07,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442575038] [2024-06-27 22:27:07,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:07,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:27:07,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:07,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:27:07,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:27:07,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:07,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 263 transitions, 4063 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:07,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:07,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:07,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:08,785 INFO L124 PetriNetUnfolderBase]: 5518/8744 cut-off events. [2024-06-27 22:27:08,785 INFO L125 PetriNetUnfolderBase]: For 100342/100346 co-relation queries the response was YES. [2024-06-27 22:27:08,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42791 conditions, 8744 events. 5518/8744 cut-off events. For 100342/100346 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 53910 event pairs, 1292 based on Foata normal form. 8/8549 useless extension candidates. Maximal degree in co-relation 42740. Up to 6718 conditions per place. [2024-06-27 22:27:08,865 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 161 selfloop transitions, 154 changer transitions 0/324 dead transitions. [2024-06-27 22:27:08,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 324 transitions, 5143 flow [2024-06-27 22:27:08,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:27:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:27:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-27 22:27:08,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773809523809523 [2024-06-27 22:27:08,867 INFO L175 Difference]: Start difference. First operand has 148 places, 263 transitions, 4063 flow. Second operand 7 states and 194 transitions. [2024-06-27 22:27:08,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 324 transitions, 5143 flow [2024-06-27 22:27:09,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 324 transitions, 4937 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 22:27:09,007 INFO L231 Difference]: Finished difference. Result has 153 places, 280 transitions, 4518 flow [2024-06-27 22:27:09,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3872, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4518, PETRI_PLACES=153, PETRI_TRANSITIONS=280} [2024-06-27 22:27:09,007 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-27 22:27:09,007 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 280 transitions, 4518 flow [2024-06-27 22:27:09,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:09,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:09,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:09,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:27:09,008 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:09,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:09,008 INFO L85 PathProgramCache]: Analyzing trace with hash -745941217, now seen corresponding path program 1 times [2024-06-27 22:27:09,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:09,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075927654] [2024-06-27 22:27:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:09,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:10,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:10,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075927654] [2024-06-27 22:27:10,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075927654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:10,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:10,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:27:10,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613487366] [2024-06-27 22:27:10,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:10,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:27:10,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:10,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:27:10,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:27:10,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:10,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 280 transitions, 4518 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) [2024-06-27 22:27:10,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:10,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:10,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:11,351 INFO L124 PetriNetUnfolderBase]: 5515/8488 cut-off events. [2024-06-27 22:27:11,352 INFO L125 PetriNetUnfolderBase]: For 110498/110502 co-relation queries the response was YES. [2024-06-27 22:27:11,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43198 conditions, 8488 events. 5515/8488 cut-off events. For 110498/110502 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 50319 event pairs, 1913 based on Foata normal form. 2/8386 useless extension candidates. Maximal degree in co-relation 43145. Up to 7798 conditions per place. [2024-06-27 22:27:11,434 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 273 selfloop transitions, 16 changer transitions 0/298 dead transitions. [2024-06-27 22:27:11,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 298 transitions, 5174 flow [2024-06-27 22:27:11,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:27:11,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:27:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 22:27:11,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 22:27:11,436 INFO L175 Difference]: Start difference. First operand has 153 places, 280 transitions, 4518 flow. Second operand 6 states and 133 transitions. [2024-06-27 22:27:11,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 298 transitions, 5174 flow [2024-06-27 22:27:11,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 298 transitions, 4984 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:27:11,564 INFO L231 Difference]: Finished difference. Result has 156 places, 284 transitions, 4405 flow [2024-06-27 22:27:11,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4328, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4405, PETRI_PLACES=156, PETRI_TRANSITIONS=284} [2024-06-27 22:27:11,565 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 102 predicate places. [2024-06-27 22:27:11,565 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 284 transitions, 4405 flow [2024-06-27 22:27:11,565 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) [2024-06-27 22:27:11,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:11,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:11,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:27:11,566 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:11,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1216059117, now seen corresponding path program 1 times [2024-06-27 22:27:11,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:11,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087021650] [2024-06-27 22:27:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:12,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:12,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087021650] [2024-06-27 22:27:12,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087021650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:12,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:12,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:27:12,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65250931] [2024-06-27 22:27:12,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:12,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:27:12,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:12,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:27:12,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:27:12,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:12,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 284 transitions, 4405 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:12,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:12,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:12,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:14,335 INFO L124 PetriNetUnfolderBase]: 5828/9345 cut-off events. [2024-06-27 22:27:14,335 INFO L125 PetriNetUnfolderBase]: For 124383/124393 co-relation queries the response was YES. [2024-06-27 22:27:14,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46210 conditions, 9345 events. 5828/9345 cut-off events. For 124383/124393 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 59251 event pairs, 1695 based on Foata normal form. 12/9071 useless extension candidates. Maximal degree in co-relation 46156. Up to 7767 conditions per place. [2024-06-27 22:27:14,421 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 221 selfloop transitions, 94 changer transitions 0/325 dead transitions. [2024-06-27 22:27:14,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 325 transitions, 5231 flow [2024-06-27 22:27:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:27:14,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:27:14,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:27:14,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-27 22:27:14,423 INFO L175 Difference]: Start difference. First operand has 156 places, 284 transitions, 4405 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:27:14,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 325 transitions, 5231 flow [2024-06-27 22:27:14,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 325 transitions, 5189 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 22:27:14,555 INFO L231 Difference]: Finished difference. Result has 161 places, 286 transitions, 4589 flow [2024-06-27 22:27:14,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4589, PETRI_PLACES=161, PETRI_TRANSITIONS=286} [2024-06-27 22:27:14,556 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 22:27:14,556 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 286 transitions, 4589 flow [2024-06-27 22:27:14,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:14,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:14,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:14,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:27:14,558 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:14,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1416328001, now seen corresponding path program 2 times [2024-06-27 22:27:14,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:14,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425247911] [2024-06-27 22:27:14,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:14,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:15,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:15,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425247911] [2024-06-27 22:27:15,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425247911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:15,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:15,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:27:15,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628153680] [2024-06-27 22:27:15,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:15,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:27:15,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:15,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:27:15,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:27:15,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:15,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 286 transitions, 4589 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:15,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:15,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:15,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:17,248 INFO L124 PetriNetUnfolderBase]: 5955/9548 cut-off events. [2024-06-27 22:27:17,248 INFO L125 PetriNetUnfolderBase]: For 135182/135192 co-relation queries the response was YES. [2024-06-27 22:27:17,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48040 conditions, 9548 events. 5955/9548 cut-off events. For 135182/135192 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 60836 event pairs, 1688 based on Foata normal form. 12/9270 useless extension candidates. Maximal degree in co-relation 47985. Up to 7800 conditions per place. [2024-06-27 22:27:17,350 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 237 selfloop transitions, 85 changer transitions 0/332 dead transitions. [2024-06-27 22:27:17,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 332 transitions, 5441 flow [2024-06-27 22:27:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:27:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:27:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 22:27:17,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:27:17,352 INFO L175 Difference]: Start difference. First operand has 161 places, 286 transitions, 4589 flow. Second operand 8 states and 192 transitions. [2024-06-27 22:27:17,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 332 transitions, 5441 flow [2024-06-27 22:27:17,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 332 transitions, 5245 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 22:27:17,553 INFO L231 Difference]: Finished difference. Result has 164 places, 291 transitions, 4634 flow [2024-06-27 22:27:17,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4393, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4634, PETRI_PLACES=164, PETRI_TRANSITIONS=291} [2024-06-27 22:27:17,554 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 110 predicate places. [2024-06-27 22:27:17,554 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 291 transitions, 4634 flow [2024-06-27 22:27:17,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:17,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:17,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:17,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:27:17,555 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:17,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:17,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1375696733, now seen corresponding path program 1 times [2024-06-27 22:27:17,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:17,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420190807] [2024-06-27 22:27:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:17,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:19,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:19,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420190807] [2024-06-27 22:27:19,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420190807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:19,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:19,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:27:19,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283886988] [2024-06-27 22:27:19,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:19,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:27:19,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:19,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:27:19,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:27:19,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:19,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 291 transitions, 4634 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:19,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:19,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:19,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:21,027 INFO L124 PetriNetUnfolderBase]: 6143/9740 cut-off events. [2024-06-27 22:27:21,028 INFO L125 PetriNetUnfolderBase]: For 153040/153044 co-relation queries the response was YES. [2024-06-27 22:27:21,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50109 conditions, 9740 events. 6143/9740 cut-off events. For 153040/153044 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 61701 event pairs, 1329 based on Foata normal form. 28/9500 useless extension candidates. Maximal degree in co-relation 50052. Up to 7281 conditions per place. [2024-06-27 22:27:21,129 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 174 selfloop transitions, 158 changer transitions 0/342 dead transitions. [2024-06-27 22:27:21,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 342 transitions, 5547 flow [2024-06-27 22:27:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:27:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:27:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:27:21,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 22:27:21,131 INFO L175 Difference]: Start difference. First operand has 164 places, 291 transitions, 4634 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:27:21,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 342 transitions, 5547 flow [2024-06-27 22:27:21,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 342 transitions, 5378 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:27:21,312 INFO L231 Difference]: Finished difference. Result has 168 places, 294 transitions, 4840 flow [2024-06-27 22:27:21,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4465, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4840, PETRI_PLACES=168, PETRI_TRANSITIONS=294} [2024-06-27 22:27:21,313 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 114 predicate places. [2024-06-27 22:27:21,313 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 294 transitions, 4840 flow [2024-06-27 22:27:21,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:21,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:21,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:21,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:27:21,314 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:21,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:21,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1830692097, now seen corresponding path program 1 times [2024-06-27 22:27:21,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:21,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659310589] [2024-06-27 22:27:21,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:21,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:22,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:22,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659310589] [2024-06-27 22:27:22,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659310589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:22,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:22,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:27:22,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988401967] [2024-06-27 22:27:22,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:22,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:27:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:27:22,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:27:22,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:22,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 294 transitions, 4840 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) [2024-06-27 22:27:22,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:22,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:22,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:23,537 INFO L124 PetriNetUnfolderBase]: 6179/9778 cut-off events. [2024-06-27 22:27:23,538 INFO L125 PetriNetUnfolderBase]: For 158360/158366 co-relation queries the response was YES. [2024-06-27 22:27:23,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51976 conditions, 9778 events. 6179/9778 cut-off events. For 158360/158366 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 61469 event pairs, 2001 based on Foata normal form. 5/9545 useless extension candidates. Maximal degree in co-relation 51918. Up to 8678 conditions per place. [2024-06-27 22:27:23,644 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 296 selfloop transitions, 24 changer transitions 0/330 dead transitions. [2024-06-27 22:27:23,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 330 transitions, 5833 flow [2024-06-27 22:27:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:27:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:27:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 22:27:23,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-27 22:27:23,646 INFO L175 Difference]: Start difference. First operand has 168 places, 294 transitions, 4840 flow. Second operand 6 states and 139 transitions. [2024-06-27 22:27:23,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 330 transitions, 5833 flow [2024-06-27 22:27:23,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 330 transitions, 5451 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:27:23,889 INFO L231 Difference]: Finished difference. Result has 170 places, 311 transitions, 4839 flow [2024-06-27 22:27:23,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4471, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4839, PETRI_PLACES=170, PETRI_TRANSITIONS=311} [2024-06-27 22:27:23,889 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-06-27 22:27:23,889 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 311 transitions, 4839 flow [2024-06-27 22:27:23,890 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) [2024-06-27 22:27:23,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:23,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:23,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:27:23,890 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:23,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash 688184443, now seen corresponding path program 2 times [2024-06-27 22:27:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973732509] [2024-06-27 22:27:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:25,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:25,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973732509] [2024-06-27 22:27:25,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973732509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:25,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:25,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:27:25,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900354746] [2024-06-27 22:27:25,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:25,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:27:25,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:25,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:27:25,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:27:25,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:25,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 311 transitions, 4839 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:25,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:25,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:25,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:27,546 INFO L124 PetriNetUnfolderBase]: 6225/9819 cut-off events. [2024-06-27 22:27:27,547 INFO L125 PetriNetUnfolderBase]: For 158398/158398 co-relation queries the response was YES. [2024-06-27 22:27:27,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52173 conditions, 9819 events. 6225/9819 cut-off events. For 158398/158398 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 61727 event pairs, 1428 based on Foata normal form. 4/9532 useless extension candidates. Maximal degree in co-relation 52111. Up to 7647 conditions per place. [2024-06-27 22:27:27,650 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 170 selfloop transitions, 180 changer transitions 0/360 dead transitions. [2024-06-27 22:27:27,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 360 transitions, 5807 flow [2024-06-27 22:27:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:27:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:27:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 22:27:27,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-06-27 22:27:27,651 INFO L175 Difference]: Start difference. First operand has 170 places, 311 transitions, 4839 flow. Second operand 9 states and 214 transitions. [2024-06-27 22:27:27,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 360 transitions, 5807 flow [2024-06-27 22:27:27,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 360 transitions, 5767 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-06-27 22:27:27,855 INFO L231 Difference]: Finished difference. Result has 179 places, 314 transitions, 5220 flow [2024-06-27 22:27:27,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4799, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5220, PETRI_PLACES=179, PETRI_TRANSITIONS=314} [2024-06-27 22:27:27,856 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-27 22:27:27,856 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 314 transitions, 5220 flow [2024-06-27 22:27:27,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:27,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:27,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:27,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:27:27,857 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:27,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash 688481113, now seen corresponding path program 3 times [2024-06-27 22:27:27,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:27,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389876466] [2024-06-27 22:27:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:27,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:29,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:29,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389876466] [2024-06-27 22:27:29,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389876466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:29,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:29,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:27:29,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924326926] [2024-06-27 22:27:29,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:29,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:27:29,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:29,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:27:29,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:27:29,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:29,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 314 transitions, 5220 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:29,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:29,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:29,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:31,785 INFO L124 PetriNetUnfolderBase]: 6449/10159 cut-off events. [2024-06-27 22:27:31,786 INFO L125 PetriNetUnfolderBase]: For 188654/188654 co-relation queries the response was YES. [2024-06-27 22:27:31,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56740 conditions, 10159 events. 6449/10159 cut-off events. For 188654/188654 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 64264 event pairs, 1088 based on Foata normal form. 4/9872 useless extension candidates. Maximal degree in co-relation 56676. Up to 7319 conditions per place. [2024-06-27 22:27:31,888 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 170 selfloop transitions, 191 changer transitions 0/371 dead transitions. [2024-06-27 22:27:31,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 371 transitions, 6372 flow [2024-06-27 22:27:31,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:27:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:27:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:27:31,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 22:27:31,890 INFO L175 Difference]: Start difference. First operand has 179 places, 314 transitions, 5220 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:27:31,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 371 transitions, 6372 flow [2024-06-27 22:27:32,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 371 transitions, 5977 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 22:27:32,130 INFO L231 Difference]: Finished difference. Result has 181 places, 320 transitions, 5325 flow [2024-06-27 22:27:32,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4825, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5325, PETRI_PLACES=181, PETRI_TRANSITIONS=320} [2024-06-27 22:27:32,132 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 127 predicate places. [2024-06-27 22:27:32,132 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 320 transitions, 5325 flow [2024-06-27 22:27:32,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:32,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:32,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:32,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:27:32,133 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:32,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:32,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2108611121, now seen corresponding path program 4 times [2024-06-27 22:27:32,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:32,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875522725] [2024-06-27 22:27:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:32,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:33,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:33,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875522725] [2024-06-27 22:27:33,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875522725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:33,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:33,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:27:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144142244] [2024-06-27 22:27:33,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:33,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:27:33,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:27:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:27:33,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:33,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 320 transitions, 5325 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:33,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:33,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:33,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:35,922 INFO L124 PetriNetUnfolderBase]: 6483/10209 cut-off events. [2024-06-27 22:27:35,923 INFO L125 PetriNetUnfolderBase]: For 201303/201303 co-relation queries the response was YES. [2024-06-27 22:27:35,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58082 conditions, 10209 events. 6483/10209 cut-off events. For 201303/201303 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 64436 event pairs, 1491 based on Foata normal form. 4/9922 useless extension candidates. Maximal degree in co-relation 58017. Up to 8031 conditions per place. [2024-06-27 22:27:36,029 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 187 selfloop transitions, 176 changer transitions 0/373 dead transitions. [2024-06-27 22:27:36,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 373 transitions, 6371 flow [2024-06-27 22:27:36,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:27:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:27:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 22:27:36,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-27 22:27:36,033 INFO L175 Difference]: Start difference. First operand has 181 places, 320 transitions, 5325 flow. Second operand 9 states and 215 transitions. [2024-06-27 22:27:36,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 373 transitions, 6371 flow [2024-06-27 22:27:36,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 373 transitions, 5963 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 22:27:36,312 INFO L231 Difference]: Finished difference. Result has 184 places, 323 transitions, 5343 flow [2024-06-27 22:27:36,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4921, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5343, PETRI_PLACES=184, PETRI_TRANSITIONS=323} [2024-06-27 22:27:36,313 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-27 22:27:36,313 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 323 transitions, 5343 flow [2024-06-27 22:27:36,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:36,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:36,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:36,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:27:36,314 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:36,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1649354329, now seen corresponding path program 2 times [2024-06-27 22:27:36,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:36,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134381184] [2024-06-27 22:27:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:36,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:37,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:37,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134381184] [2024-06-27 22:27:37,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134381184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:37,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:37,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:27:37,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540707952] [2024-06-27 22:27:37,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:37,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:27:37,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:37,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:27:37,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:27:37,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:37,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 323 transitions, 5343 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) [2024-06-27 22:27:37,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:37,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:37,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:38,828 INFO L124 PetriNetUnfolderBase]: 6483/10235 cut-off events. [2024-06-27 22:27:38,829 INFO L125 PetriNetUnfolderBase]: For 204432/204447 co-relation queries the response was YES. [2024-06-27 22:27:38,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57968 conditions, 10235 events. 6483/10235 cut-off events. For 204432/204447 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 64602 event pairs, 2084 based on Foata normal form. 11/10006 useless extension candidates. Maximal degree in co-relation 57902. Up to 9112 conditions per place. [2024-06-27 22:27:38,918 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 303 selfloop transitions, 35 changer transitions 0/348 dead transitions. [2024-06-27 22:27:38,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 348 transitions, 6241 flow [2024-06-27 22:27:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:27:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:27:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 22:27:38,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-27 22:27:38,920 INFO L175 Difference]: Start difference. First operand has 184 places, 323 transitions, 5343 flow. Second operand 6 states and 137 transitions. [2024-06-27 22:27:38,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 348 transitions, 6241 flow [2024-06-27 22:27:39,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 348 transitions, 5815 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 22:27:39,186 INFO L231 Difference]: Finished difference. Result has 183 places, 331 transitions, 5094 flow [2024-06-27 22:27:39,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4917, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5094, PETRI_PLACES=183, PETRI_TRANSITIONS=331} [2024-06-27 22:27:39,187 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 129 predicate places. [2024-06-27 22:27:39,187 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 331 transitions, 5094 flow [2024-06-27 22:27:39,187 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) [2024-06-27 22:27:39,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:39,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:39,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:27:39,188 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:39,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash -943780481, now seen corresponding path program 3 times [2024-06-27 22:27:39,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:39,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178624568] [2024-06-27 22:27:39,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:39,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:40,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:40,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178624568] [2024-06-27 22:27:40,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178624568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:40,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:40,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:27:40,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438208937] [2024-06-27 22:27:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:40,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:27:40,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:40,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:27:40,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:27:40,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:40,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 331 transitions, 5094 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:40,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:40,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:40,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:42,060 INFO L124 PetriNetUnfolderBase]: 6573/10456 cut-off events. [2024-06-27 22:27:42,061 INFO L125 PetriNetUnfolderBase]: For 207140/207146 co-relation queries the response was YES. [2024-06-27 22:27:42,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58587 conditions, 10456 events. 6573/10456 cut-off events. For 207140/207146 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 66874 event pairs, 1832 based on Foata normal form. 8/10175 useless extension candidates. Maximal degree in co-relation 58520. Up to 8848 conditions per place. [2024-06-27 22:27:42,182 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 270 selfloop transitions, 104 changer transitions 0/384 dead transitions. [2024-06-27 22:27:42,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 384 transitions, 6130 flow [2024-06-27 22:27:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:27:42,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:27:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 22:27:42,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-27 22:27:42,190 INFO L175 Difference]: Start difference. First operand has 183 places, 331 transitions, 5094 flow. Second operand 8 states and 203 transitions. [2024-06-27 22:27:42,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 384 transitions, 6130 flow [2024-06-27 22:27:42,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 384 transitions, 6041 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-27 22:27:42,498 INFO L231 Difference]: Finished difference. Result has 189 places, 335 transitions, 5306 flow [2024-06-27 22:27:42,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5026, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5306, PETRI_PLACES=189, PETRI_TRANSITIONS=335} [2024-06-27 22:27:42,499 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 135 predicate places. [2024-06-27 22:27:42,499 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 335 transitions, 5306 flow [2024-06-27 22:27:42,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:42,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:42,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:42,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:27:42,518 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:42,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:42,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1904944645, now seen corresponding path program 4 times [2024-06-27 22:27:42,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:42,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141947448] [2024-06-27 22:27:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:42,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:43,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:43,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141947448] [2024-06-27 22:27:43,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141947448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:43,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:43,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:27:43,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825394333] [2024-06-27 22:27:43,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:43,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:27:43,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:43,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:27:43,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:27:43,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:43,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 335 transitions, 5306 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:43,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:43,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:43,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:45,313 INFO L124 PetriNetUnfolderBase]: 6802/10832 cut-off events. [2024-06-27 22:27:45,314 INFO L125 PetriNetUnfolderBase]: For 222365/222371 co-relation queries the response was YES. [2024-06-27 22:27:45,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60680 conditions, 10832 events. 6802/10832 cut-off events. For 222365/222371 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 69896 event pairs, 1876 based on Foata normal form. 8/10543 useless extension candidates. Maximal degree in co-relation 60611. Up to 8906 conditions per place. [2024-06-27 22:27:45,430 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 288 selfloop transitions, 100 changer transitions 0/398 dead transitions. [2024-06-27 22:27:45,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 398 transitions, 6421 flow [2024-06-27 22:27:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:27:45,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:27:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 22:27:45,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 22:27:45,432 INFO L175 Difference]: Start difference. First operand has 189 places, 335 transitions, 5306 flow. Second operand 8 states and 204 transitions. [2024-06-27 22:27:45,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 398 transitions, 6421 flow [2024-06-27 22:27:45,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 398 transitions, 6270 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 22:27:45,803 INFO L231 Difference]: Finished difference. Result has 194 places, 346 transitions, 5515 flow [2024-06-27 22:27:45,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5155, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5515, PETRI_PLACES=194, PETRI_TRANSITIONS=346} [2024-06-27 22:27:45,804 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 140 predicate places. [2024-06-27 22:27:45,804 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 346 transitions, 5515 flow [2024-06-27 22:27:45,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:45,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:45,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:45,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:27:45,805 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:45,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:45,805 INFO L85 PathProgramCache]: Analyzing trace with hash -786703365, now seen corresponding path program 5 times [2024-06-27 22:27:45,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:45,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952780381] [2024-06-27 22:27:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:45,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:46,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:46,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952780381] [2024-06-27 22:27:46,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952780381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:46,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:46,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:27:46,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698448914] [2024-06-27 22:27:46,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:46,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:27:46,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:46,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:27:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:27:46,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:27:46,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 346 transitions, 5515 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:46,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:46,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:27:46,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:48,210 INFO L124 PetriNetUnfolderBase]: 5544/9410 cut-off events. [2024-06-27 22:27:48,210 INFO L125 PetriNetUnfolderBase]: For 197094/197297 co-relation queries the response was YES. [2024-06-27 22:27:48,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53082 conditions, 9410 events. 5544/9410 cut-off events. For 197094/197297 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 65272 event pairs, 1171 based on Foata normal form. 177/9243 useless extension candidates. Maximal degree in co-relation 53011. Up to 6657 conditions per place. [2024-06-27 22:27:48,318 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 209 selfloop transitions, 121 changer transitions 0/402 dead transitions. [2024-06-27 22:27:48,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 402 transitions, 6524 flow [2024-06-27 22:27:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:27:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:27:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-27 22:27:48,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773809523809523 [2024-06-27 22:27:48,320 INFO L175 Difference]: Start difference. First operand has 194 places, 346 transitions, 5515 flow. Second operand 7 states and 194 transitions. [2024-06-27 22:27:48,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 402 transitions, 6524 flow [2024-06-27 22:27:48,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 402 transitions, 6332 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:27:48,660 INFO L231 Difference]: Finished difference. Result has 198 places, 359 transitions, 5856 flow [2024-06-27 22:27:48,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5323, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5856, PETRI_PLACES=198, PETRI_TRANSITIONS=359} [2024-06-27 22:27:48,661 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-27 22:27:48,661 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 359 transitions, 5856 flow [2024-06-27 22:27:48,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:48,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:48,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:48,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:27:48,662 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:48,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:48,662 INFO L85 PathProgramCache]: Analyzing trace with hash 714651545, now seen corresponding path program 5 times [2024-06-27 22:27:48,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:48,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956987926] [2024-06-27 22:27:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:48,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:50,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:50,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956987926] [2024-06-27 22:27:50,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956987926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:50,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:50,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:27:50,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242600507] [2024-06-27 22:27:50,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:50,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:27:50,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:50,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:27:50,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:27:50,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:50,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 359 transitions, 5856 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:50,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:50,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:50,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:52,688 INFO L124 PetriNetUnfolderBase]: 7086/11205 cut-off events. [2024-06-27 22:27:52,702 INFO L125 PetriNetUnfolderBase]: For 246491/246491 co-relation queries the response was YES. [2024-06-27 22:27:52,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64884 conditions, 11205 events. 7086/11205 cut-off events. For 246491/246491 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 72288 event pairs, 1620 based on Foata normal form. 24/10944 useless extension candidates. Maximal degree in co-relation 64810. Up to 8550 conditions per place. [2024-06-27 22:27:52,820 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 239 selfloop transitions, 168 changer transitions 0/417 dead transitions. [2024-06-27 22:27:52,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 417 transitions, 6922 flow [2024-06-27 22:27:52,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:27:52,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:27:52,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 22:27:52,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-27 22:27:52,822 INFO L175 Difference]: Start difference. First operand has 198 places, 359 transitions, 5856 flow. Second operand 9 states and 233 transitions. [2024-06-27 22:27:52,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 417 transitions, 6922 flow [2024-06-27 22:27:53,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 417 transitions, 6771 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 22:27:53,327 INFO L231 Difference]: Finished difference. Result has 204 places, 362 transitions, 6087 flow [2024-06-27 22:27:53,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5705, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6087, PETRI_PLACES=204, PETRI_TRANSITIONS=362} [2024-06-27 22:27:53,328 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-27 22:27:53,328 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 362 transitions, 6087 flow [2024-06-27 22:27:53,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:53,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:53,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:53,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:27:53,329 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:53,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:53,330 INFO L85 PathProgramCache]: Analyzing trace with hash -641969625, now seen corresponding path program 3 times [2024-06-27 22:27:53,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:53,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645786552] [2024-06-27 22:27:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:53,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:54,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:54,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:54,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645786552] [2024-06-27 22:27:54,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645786552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:54,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:54,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:27:54,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097990479] [2024-06-27 22:27:54,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:54,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:27:54,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:54,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:27:54,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:27:54,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:54,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 362 transitions, 6087 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) [2024-06-27 22:27:54,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:54,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:54,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:56,014 INFO L124 PetriNetUnfolderBase]: 7083/11222 cut-off events. [2024-06-27 22:27:56,014 INFO L125 PetriNetUnfolderBase]: For 249183/249189 co-relation queries the response was YES. [2024-06-27 22:27:56,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65323 conditions, 11222 events. 7083/11222 cut-off events. For 249183/249189 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 72449 event pairs, 2416 based on Foata normal form. 7/10966 useless extension candidates. Maximal degree in co-relation 65248. Up to 10000 conditions per place. [2024-06-27 22:27:56,119 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 352 selfloop transitions, 31 changer transitions 0/393 dead transitions. [2024-06-27 22:27:56,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 393 transitions, 7017 flow [2024-06-27 22:27:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:27:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:27:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 22:27:56,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 22:27:56,121 INFO L175 Difference]: Start difference. First operand has 204 places, 362 transitions, 6087 flow. Second operand 7 states and 161 transitions. [2024-06-27 22:27:56,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 393 transitions, 7017 flow [2024-06-27 22:27:56,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 393 transitions, 6619 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 22:27:56,555 INFO L231 Difference]: Finished difference. Result has 205 places, 369 transitions, 5859 flow [2024-06-27 22:27:56,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5693, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5859, PETRI_PLACES=205, PETRI_TRANSITIONS=369} [2024-06-27 22:27:56,555 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-27 22:27:56,555 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 369 transitions, 5859 flow [2024-06-27 22:27:56,556 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) [2024-06-27 22:27:56,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:56,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:56,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:27:56,556 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:56,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:56,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1836411969, now seen corresponding path program 1 times [2024-06-27 22:27:56,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:56,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069058122] [2024-06-27 22:27:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:56,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:57,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:57,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069058122] [2024-06-27 22:27:57,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069058122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:57,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:57,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:27:57,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414737864] [2024-06-27 22:27:57,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:57,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:27:57,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:57,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:27:57,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:27:57,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:27:57,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 369 transitions, 5859 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) [2024-06-27 22:27:57,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:57,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:27:57,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:59,062 INFO L124 PetriNetUnfolderBase]: 6498/10428 cut-off events. [2024-06-27 22:27:59,062 INFO L125 PetriNetUnfolderBase]: For 205569/205569 co-relation queries the response was YES. [2024-06-27 22:27:59,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58703 conditions, 10428 events. 6498/10428 cut-off events. For 205569/205569 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 68043 event pairs, 2245 based on Foata normal form. 1/10195 useless extension candidates. Maximal degree in co-relation 58626. Up to 9203 conditions per place. [2024-06-27 22:27:59,191 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 367 selfloop transitions, 16 changer transitions 0/394 dead transitions. [2024-06-27 22:27:59,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 394 transitions, 6813 flow [2024-06-27 22:27:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:27:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:27:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 22:27:59,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 22:27:59,193 INFO L175 Difference]: Start difference. First operand has 205 places, 369 transitions, 5859 flow. Second operand 6 states and 141 transitions. [2024-06-27 22:27:59,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 394 transitions, 6813 flow [2024-06-27 22:27:59,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 394 transitions, 6743 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:27:59,567 INFO L231 Difference]: Finished difference. Result has 208 places, 377 transitions, 5967 flow [2024-06-27 22:27:59,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5789, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5967, PETRI_PLACES=208, PETRI_TRANSITIONS=377} [2024-06-27 22:27:59,568 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 154 predicate places. [2024-06-27 22:27:59,568 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 377 transitions, 5967 flow [2024-06-27 22:27:59,568 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) [2024-06-27 22:27:59,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:59,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:59,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:27:59,569 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:59,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1842155649, now seen corresponding path program 2 times [2024-06-27 22:27:59,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:59,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052545653] [2024-06-27 22:27:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:59,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:00,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:00,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052545653] [2024-06-27 22:28:00,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052545653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:00,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:00,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:00,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045940209] [2024-06-27 22:28:00,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:00,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:00,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:00,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:00,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:00,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:28:00,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 377 transitions, 5967 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) [2024-06-27 22:28:00,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:00,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:28:00,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:02,059 INFO L124 PetriNetUnfolderBase]: 6495/10426 cut-off events. [2024-06-27 22:28:02,060 INFO L125 PetriNetUnfolderBase]: For 215554/215563 co-relation queries the response was YES. [2024-06-27 22:28:02,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59850 conditions, 10426 events. 6495/10426 cut-off events. For 215554/215563 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 68039 event pairs, 2251 based on Foata normal form. 7/10198 useless extension candidates. Maximal degree in co-relation 59772. Up to 9185 conditions per place. [2024-06-27 22:28:02,183 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 361 selfloop transitions, 23 changer transitions 0/395 dead transitions. [2024-06-27 22:28:02,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 395 transitions, 6839 flow [2024-06-27 22:28:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:28:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:28:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 22:28:02,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 22:28:02,185 INFO L175 Difference]: Start difference. First operand has 208 places, 377 transitions, 5967 flow. Second operand 6 states and 140 transitions. [2024-06-27 22:28:02,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 395 transitions, 6839 flow [2024-06-27 22:28:02,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 395 transitions, 6782 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:28:02,597 INFO L231 Difference]: Finished difference. Result has 210 places, 381 transitions, 6019 flow [2024-06-27 22:28:02,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5910, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6019, PETRI_PLACES=210, PETRI_TRANSITIONS=381} [2024-06-27 22:28:02,597 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-27 22:28:02,597 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 381 transitions, 6019 flow [2024-06-27 22:28:02,598 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) [2024-06-27 22:28:02,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:02,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:02,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:28:02,598 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:02,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1842164577, now seen corresponding path program 1 times [2024-06-27 22:28:02,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:02,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425031306] [2024-06-27 22:28:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:03,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:03,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425031306] [2024-06-27 22:28:03,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425031306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:03,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:03,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:03,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428451028] [2024-06-27 22:28:03,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:03,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:03,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:03,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:03,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:03,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:03,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 381 transitions, 6019 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) [2024-06-27 22:28:03,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:03,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:03,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:05,378 INFO L124 PetriNetUnfolderBase]: 6794/10722 cut-off events. [2024-06-27 22:28:05,379 INFO L125 PetriNetUnfolderBase]: For 223804/223804 co-relation queries the response was YES. [2024-06-27 22:28:05,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62423 conditions, 10722 events. 6794/10722 cut-off events. For 223804/223804 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 68393 event pairs, 2371 based on Foata normal form. 1/10489 useless extension candidates. Maximal degree in co-relation 62343. Up to 9675 conditions per place. [2024-06-27 22:28:05,515 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 373 selfloop transitions, 20 changer transitions 0/402 dead transitions. [2024-06-27 22:28:05,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 402 transitions, 6921 flow [2024-06-27 22:28:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:05,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:05,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-27 22:28:05,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-27 22:28:05,517 INFO L175 Difference]: Start difference. First operand has 210 places, 381 transitions, 6019 flow. Second operand 8 states and 164 transitions. [2024-06-27 22:28:05,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 402 transitions, 6921 flow [2024-06-27 22:28:05,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 402 transitions, 6840 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 22:28:05,920 INFO L231 Difference]: Finished difference. Result has 214 places, 385 transitions, 6041 flow [2024-06-27 22:28:05,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5938, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6041, PETRI_PLACES=214, PETRI_TRANSITIONS=385} [2024-06-27 22:28:05,921 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 160 predicate places. [2024-06-27 22:28:05,921 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 385 transitions, 6041 flow [2024-06-27 22:28:05,921 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) [2024-06-27 22:28:05,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:05,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:05,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:28:05,922 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:05,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:05,922 INFO L85 PathProgramCache]: Analyzing trace with hash -867928331, now seen corresponding path program 1 times [2024-06-27 22:28:05,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:05,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235282112] [2024-06-27 22:28:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:05,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:07,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:07,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235282112] [2024-06-27 22:28:07,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235282112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:07,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:07,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:07,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949101158] [2024-06-27 22:28:07,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:07,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:07,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:07,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:07,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:07,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 385 transitions, 6041 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) [2024-06-27 22:28:07,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:07,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:07,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:09,422 INFO L124 PetriNetUnfolderBase]: 7216/11413 cut-off events. [2024-06-27 22:28:09,422 INFO L125 PetriNetUnfolderBase]: For 271434/271434 co-relation queries the response was YES. [2024-06-27 22:28:09,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67923 conditions, 11413 events. 7216/11413 cut-off events. For 271434/271434 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 73980 event pairs, 1480 based on Foata normal form. 16/11137 useless extension candidates. Maximal degree in co-relation 67842. Up to 8422 conditions per place. [2024-06-27 22:28:09,556 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 263 selfloop transitions, 177 changer transitions 0/450 dead transitions. [2024-06-27 22:28:09,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 450 transitions, 7375 flow [2024-06-27 22:28:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:28:09,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:28:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:28:09,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-27 22:28:09,560 INFO L175 Difference]: Start difference. First operand has 214 places, 385 transitions, 6041 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:28:09,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 450 transitions, 7375 flow [2024-06-27 22:28:09,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 450 transitions, 7300 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:09,969 INFO L231 Difference]: Finished difference. Result has 218 places, 396 transitions, 6532 flow [2024-06-27 22:28:09,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5966, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6532, PETRI_PLACES=218, PETRI_TRANSITIONS=396} [2024-06-27 22:28:09,970 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-06-27 22:28:09,970 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 396 transitions, 6532 flow [2024-06-27 22:28:09,970 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) [2024-06-27 22:28:09,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:09,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:09,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:28:09,971 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:09,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:09,971 INFO L85 PathProgramCache]: Analyzing trace with hash -956494091, now seen corresponding path program 2 times [2024-06-27 22:28:09,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:09,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871900490] [2024-06-27 22:28:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:09,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:11,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:11,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871900490] [2024-06-27 22:28:11,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871900490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:11,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:11,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:11,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438663827] [2024-06-27 22:28:11,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:11,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:11,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:11,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:11,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:11,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:11,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 396 transitions, 6532 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) [2024-06-27 22:28:11,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:11,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:11,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:13,679 INFO L124 PetriNetUnfolderBase]: 7526/11906 cut-off events. [2024-06-27 22:28:13,679 INFO L125 PetriNetUnfolderBase]: For 313758/313758 co-relation queries the response was YES. [2024-06-27 22:28:13,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73595 conditions, 11906 events. 7526/11906 cut-off events. For 313758/313758 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 77868 event pairs, 1582 based on Foata normal form. 16/11630 useless extension candidates. Maximal degree in co-relation 73512. Up to 7832 conditions per place. [2024-06-27 22:28:13,827 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 281 selfloop transitions, 180 changer transitions 0/471 dead transitions. [2024-06-27 22:28:13,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 471 transitions, 8112 flow [2024-06-27 22:28:13,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:28:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:28:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 22:28:13,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 22:28:13,828 INFO L175 Difference]: Start difference. First operand has 218 places, 396 transitions, 6532 flow. Second operand 9 states and 224 transitions. [2024-06-27 22:28:13,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 471 transitions, 8112 flow [2024-06-27 22:28:14,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 471 transitions, 7987 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 22:28:14,358 INFO L231 Difference]: Finished difference. Result has 226 places, 415 transitions, 7137 flow [2024-06-27 22:28:14,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6407, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7137, PETRI_PLACES=226, PETRI_TRANSITIONS=415} [2024-06-27 22:28:14,359 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-27 22:28:14,359 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 415 transitions, 7137 flow [2024-06-27 22:28:14,359 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) [2024-06-27 22:28:14,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:14,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:14,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:28:14,360 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:14,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:14,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1588869357, now seen corresponding path program 3 times [2024-06-27 22:28:14,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:14,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521333258] [2024-06-27 22:28:14,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:14,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:15,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:15,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521333258] [2024-06-27 22:28:15,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521333258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:15,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:15,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:15,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399402832] [2024-06-27 22:28:15,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:15,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:15,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:15,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 415 transitions, 7137 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) [2024-06-27 22:28:15,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:15,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:15,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:18,181 INFO L124 PetriNetUnfolderBase]: 7752/12281 cut-off events. [2024-06-27 22:28:18,182 INFO L125 PetriNetUnfolderBase]: For 346782/346782 co-relation queries the response was YES. [2024-06-27 22:28:18,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78584 conditions, 12281 events. 7752/12281 cut-off events. For 346782/346782 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 80840 event pairs, 1726 based on Foata normal form. 16/12006 useless extension candidates. Maximal degree in co-relation 78497. Up to 9204 conditions per place. [2024-06-27 22:28:18,337 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 290 selfloop transitions, 180 changer transitions 0/480 dead transitions. [2024-06-27 22:28:18,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 480 transitions, 8653 flow [2024-06-27 22:28:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:28:18,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:28:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 22:28:18,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254629629629629 [2024-06-27 22:28:18,339 INFO L175 Difference]: Start difference. First operand has 226 places, 415 transitions, 7137 flow. Second operand 9 states and 227 transitions. [2024-06-27 22:28:18,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 480 transitions, 8653 flow [2024-06-27 22:28:18,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 480 transitions, 8422 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 22:28:18,991 INFO L231 Difference]: Finished difference. Result has 232 places, 422 transitions, 7455 flow [2024-06-27 22:28:18,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6906, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7455, PETRI_PLACES=232, PETRI_TRANSITIONS=422} [2024-06-27 22:28:18,991 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 178 predicate places. [2024-06-27 22:28:18,991 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 422 transitions, 7455 flow [2024-06-27 22:28:18,992 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) [2024-06-27 22:28:18,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:18,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:18,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:28:18,992 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:18,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:18,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1583359107, now seen corresponding path program 4 times [2024-06-27 22:28:18,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:18,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761935793] [2024-06-27 22:28:18,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:18,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:20,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:20,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761935793] [2024-06-27 22:28:20,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761935793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:20,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:20,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:20,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279924338] [2024-06-27 22:28:20,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:20,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:20,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:20,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:20,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:20,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:20,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 422 transitions, 7455 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) [2024-06-27 22:28:20,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:20,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:20,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:22,992 INFO L124 PetriNetUnfolderBase]: 7906/12519 cut-off events. [2024-06-27 22:28:22,992 INFO L125 PetriNetUnfolderBase]: For 363083/363083 co-relation queries the response was YES. [2024-06-27 22:28:23,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81416 conditions, 12519 events. 7906/12519 cut-off events. For 363083/363083 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 82621 event pairs, 1774 based on Foata normal form. 20/12247 useless extension candidates. Maximal degree in co-relation 81326. Up to 9950 conditions per place. [2024-06-27 22:28:23,184 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 299 selfloop transitions, 163 changer transitions 0/472 dead transitions. [2024-06-27 22:28:23,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 472 transitions, 8679 flow [2024-06-27 22:28:23,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:28:23,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:28:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:28:23,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 22:28:23,186 INFO L175 Difference]: Start difference. First operand has 232 places, 422 transitions, 7455 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:28:23,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 472 transitions, 8679 flow [2024-06-27 22:28:23,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 472 transitions, 8568 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 22:28:23,863 INFO L231 Difference]: Finished difference. Result has 238 places, 424 transitions, 7746 flow [2024-06-27 22:28:23,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7350, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7746, PETRI_PLACES=238, PETRI_TRANSITIONS=424} [2024-06-27 22:28:23,864 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-27 22:28:23,865 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 424 transitions, 7746 flow [2024-06-27 22:28:23,865 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) [2024-06-27 22:28:23,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:23,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:23,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:28:23,867 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:23,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash 297497449, now seen corresponding path program 5 times [2024-06-27 22:28:23,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:23,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842284305] [2024-06-27 22:28:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:23,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:25,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:25,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842284305] [2024-06-27 22:28:25,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842284305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:25,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:25,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402457006] [2024-06-27 22:28:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:25,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:25,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:25,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:25,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 424 transitions, 7746 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) [2024-06-27 22:28:25,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:25,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:25,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:27,775 INFO L124 PetriNetUnfolderBase]: 8060/12749 cut-off events. [2024-06-27 22:28:27,775 INFO L125 PetriNetUnfolderBase]: For 385835/385835 co-relation queries the response was YES. [2024-06-27 22:28:27,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83998 conditions, 12749 events. 8060/12749 cut-off events. For 385835/385835 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 84332 event pairs, 1823 based on Foata normal form. 20/12478 useless extension candidates. Maximal degree in co-relation 83906. Up to 10184 conditions per place. [2024-06-27 22:28:27,938 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 295 selfloop transitions, 172 changer transitions 0/477 dead transitions. [2024-06-27 22:28:27,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 477 transitions, 9020 flow [2024-06-27 22:28:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:28:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:28:27,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 22:28:27,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-27 22:28:27,940 INFO L175 Difference]: Start difference. First operand has 238 places, 424 transitions, 7746 flow. Second operand 9 states and 221 transitions. [2024-06-27 22:28:27,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 477 transitions, 9020 flow [2024-06-27 22:28:28,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 477 transitions, 8570 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:28,647 INFO L231 Difference]: Finished difference. Result has 238 places, 426 transitions, 7714 flow [2024-06-27 22:28:28,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7296, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7714, PETRI_PLACES=238, PETRI_TRANSITIONS=426} [2024-06-27 22:28:28,648 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-27 22:28:28,648 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 426 transitions, 7714 flow [2024-06-27 22:28:28,648 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) [2024-06-27 22:28:28,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:28,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:28,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:28:28,648 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:28,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:28,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1583143905, now seen corresponding path program 1 times [2024-06-27 22:28:28,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:28,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195768254] [2024-06-27 22:28:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:28,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:30,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:30,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195768254] [2024-06-27 22:28:30,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195768254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:30,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:30,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:28:30,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583761206] [2024-06-27 22:28:30,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:30,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:28:30,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:30,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:28:30,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:28:30,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:30,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 426 transitions, 7714 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:30,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:30,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:30,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:33,003 INFO L124 PetriNetUnfolderBase]: 8146/12891 cut-off events. [2024-06-27 22:28:33,003 INFO L125 PetriNetUnfolderBase]: For 387226/387226 co-relation queries the response was YES. [2024-06-27 22:28:33,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84763 conditions, 12891 events. 8146/12891 cut-off events. For 387226/387226 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 85624 event pairs, 1680 based on Foata normal form. 12/12611 useless extension candidates. Maximal degree in co-relation 84670. Up to 9438 conditions per place. [2024-06-27 22:28:33,211 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 298 selfloop transitions, 169 changer transitions 0/477 dead transitions. [2024-06-27 22:28:33,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 477 transitions, 8942 flow [2024-06-27 22:28:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:28:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:28:33,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:28:33,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 22:28:33,213 INFO L175 Difference]: Start difference. First operand has 238 places, 426 transitions, 7714 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:28:33,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 477 transitions, 8942 flow [2024-06-27 22:28:33,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 477 transitions, 8444 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:33,997 INFO L231 Difference]: Finished difference. Result has 238 places, 428 transitions, 7623 flow [2024-06-27 22:28:33,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7216, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7623, PETRI_PLACES=238, PETRI_TRANSITIONS=428} [2024-06-27 22:28:33,997 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-27 22:28:33,998 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 428 transitions, 7623 flow [2024-06-27 22:28:33,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:33,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:33,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:33,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:28:33,998 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:33,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash 916582063, now seen corresponding path program 1 times [2024-06-27 22:28:33,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:33,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729326582] [2024-06-27 22:28:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:33,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:34,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:34,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729326582] [2024-06-27 22:28:34,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729326582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:34,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:34,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:34,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065943512] [2024-06-27 22:28:34,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:34,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:34,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:34,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:34,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:34,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:34,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 428 transitions, 7623 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) [2024-06-27 22:28:34,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:34,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:34,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:37,322 INFO L124 PetriNetUnfolderBase]: 8165/12907 cut-off events. [2024-06-27 22:28:37,323 INFO L125 PetriNetUnfolderBase]: For 379622/379631 co-relation queries the response was YES. [2024-06-27 22:28:37,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84785 conditions, 12907 events. 8165/12907 cut-off events. For 379622/379631 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 85073 event pairs, 2517 based on Foata normal form. 8/12646 useless extension candidates. Maximal degree in co-relation 84691. Up to 11405 conditions per place. [2024-06-27 22:28:37,491 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 425 selfloop transitions, 67 changer transitions 0/502 dead transitions. [2024-06-27 22:28:37,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 502 transitions, 10102 flow [2024-06-27 22:28:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:37,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 22:28:37,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2024-06-27 22:28:37,493 INFO L175 Difference]: Start difference. First operand has 238 places, 428 transitions, 7623 flow. Second operand 8 states and 181 transitions. [2024-06-27 22:28:37,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 502 transitions, 10102 flow [2024-06-27 22:28:38,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 502 transitions, 9673 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 22:28:38,328 INFO L231 Difference]: Finished difference. Result has 242 places, 474 transitions, 8779 flow [2024-06-27 22:28:38,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7250, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8779, PETRI_PLACES=242, PETRI_TRANSITIONS=474} [2024-06-27 22:28:38,329 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 188 predicate places. [2024-06-27 22:28:38,329 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 474 transitions, 8779 flow [2024-06-27 22:28:38,329 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) [2024-06-27 22:28:38,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:38,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:38,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:28:38,330 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:38,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:38,330 INFO L85 PathProgramCache]: Analyzing trace with hash 916881523, now seen corresponding path program 2 times [2024-06-27 22:28:38,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:38,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824834833] [2024-06-27 22:28:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:38,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:39,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824834833] [2024-06-27 22:28:39,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824834833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:39,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:39,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631418777] [2024-06-27 22:28:39,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:39,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:39,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:39,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:39,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:39,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:39,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 474 transitions, 8779 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) [2024-06-27 22:28:39,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:39,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:39,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:41,700 INFO L124 PetriNetUnfolderBase]: 8219/12991 cut-off events. [2024-06-27 22:28:41,700 INFO L125 PetriNetUnfolderBase]: For 387332/387341 co-relation queries the response was YES. [2024-06-27 22:28:41,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86200 conditions, 12991 events. 8219/12991 cut-off events. For 387332/387341 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 85746 event pairs, 2505 based on Foata normal form. 8/12729 useless extension candidates. Maximal degree in co-relation 86102. Up to 11389 conditions per place. [2024-06-27 22:28:41,906 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 426 selfloop transitions, 72 changer transitions 0/508 dead transitions. [2024-06-27 22:28:41,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 508 transitions, 10172 flow [2024-06-27 22:28:41,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 22:28:41,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-06-27 22:28:41,908 INFO L175 Difference]: Start difference. First operand has 242 places, 474 transitions, 8779 flow. Second operand 8 states and 179 transitions. [2024-06-27 22:28:41,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 508 transitions, 10172 flow [2024-06-27 22:28:42,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 508 transitions, 10085 flow, removed 40 selfloop flow, removed 2 redundant places. [2024-06-27 22:28:42,712 INFO L231 Difference]: Finished difference. Result has 249 places, 484 transitions, 9032 flow [2024-06-27 22:28:42,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8692, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9032, PETRI_PLACES=249, PETRI_TRANSITIONS=484} [2024-06-27 22:28:42,712 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-06-27 22:28:42,712 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 484 transitions, 9032 flow [2024-06-27 22:28:42,713 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) [2024-06-27 22:28:42,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:42,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:42,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:28:42,713 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:42,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:42,714 INFO L85 PathProgramCache]: Analyzing trace with hash 402377370, now seen corresponding path program 1 times [2024-06-27 22:28:42,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:42,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592725805] [2024-06-27 22:28:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:42,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:43,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:43,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592725805] [2024-06-27 22:28:43,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592725805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:43,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:43,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:43,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904514251] [2024-06-27 22:28:43,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:43,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:43,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:43,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:43,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:43,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:28:43,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 484 transitions, 9032 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-27 22:28:43,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:43,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:28:43,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:46,250 INFO L124 PetriNetUnfolderBase]: 8535/13310 cut-off events. [2024-06-27 22:28:46,250 INFO L125 PetriNetUnfolderBase]: For 409994/410003 co-relation queries the response was YES. [2024-06-27 22:28:46,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90322 conditions, 13310 events. 8535/13310 cut-off events. For 409994/410003 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 86284 event pairs, 2697 based on Foata normal form. 7/13053 useless extension candidates. Maximal degree in co-relation 90221. Up to 12212 conditions per place. [2024-06-27 22:28:46,451 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 467 selfloop transitions, 33 changer transitions 0/508 dead transitions. [2024-06-27 22:28:46,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 508 transitions, 10174 flow [2024-06-27 22:28:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-27 22:28:46,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-27 22:28:46,453 INFO L175 Difference]: Start difference. First operand has 249 places, 484 transitions, 9032 flow. Second operand 8 states and 163 transitions. [2024-06-27 22:28:46,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 508 transitions, 10174 flow [2024-06-27 22:28:47,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 508 transitions, 10034 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 22:28:47,527 INFO L231 Difference]: Finished difference. Result has 253 places, 488 transitions, 9038 flow [2024-06-27 22:28:47,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8894, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9038, PETRI_PLACES=253, PETRI_TRANSITIONS=488} [2024-06-27 22:28:47,528 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 199 predicate places. [2024-06-27 22:28:47,528 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 488 transitions, 9038 flow [2024-06-27 22:28:47,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-27 22:28:47,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:47,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:47,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:28:47,529 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:47,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:47,529 INFO L85 PathProgramCache]: Analyzing trace with hash -403085217, now seen corresponding path program 6 times [2024-06-27 22:28:47,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:47,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49798683] [2024-06-27 22:28:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:47,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:48,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49798683] [2024-06-27 22:28:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49798683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:48,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:48,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:48,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163171927] [2024-06-27 22:28:48,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:48,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:48,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:48,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:48,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 488 transitions, 9038 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) [2024-06-27 22:28:48,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:48,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:48,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:51,861 INFO L124 PetriNetUnfolderBase]: 8235/13028 cut-off events. [2024-06-27 22:28:51,862 INFO L125 PetriNetUnfolderBase]: For 423810/423819 co-relation queries the response was YES. [2024-06-27 22:28:51,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88967 conditions, 13028 events. 8235/13028 cut-off events. For 423810/423819 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 86458 event pairs, 1866 based on Foata normal form. 26/12749 useless extension candidates. Maximal degree in co-relation 88864. Up to 10432 conditions per place. [2024-06-27 22:28:52,062 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 336 selfloop transitions, 188 changer transitions 0/535 dead transitions. [2024-06-27 22:28:52,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 535 transitions, 10360 flow [2024-06-27 22:28:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:28:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:28:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 22:28:52,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-06-27 22:28:52,064 INFO L175 Difference]: Start difference. First operand has 253 places, 488 transitions, 9038 flow. Second operand 9 states and 214 transitions. [2024-06-27 22:28:52,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 535 transitions, 10360 flow [2024-06-27 22:28:53,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 535 transitions, 10216 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-27 22:28:53,365 INFO L231 Difference]: Finished difference. Result has 257 places, 489 transitions, 9306 flow [2024-06-27 22:28:53,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8900, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9306, PETRI_PLACES=257, PETRI_TRANSITIONS=489} [2024-06-27 22:28:53,366 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 203 predicate places. [2024-06-27 22:28:53,366 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 489 transitions, 9306 flow [2024-06-27 22:28:53,366 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) [2024-06-27 22:28:53,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:53,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:53,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:28:53,366 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:53,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash -615428045, now seen corresponding path program 2 times [2024-06-27 22:28:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:53,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738674029] [2024-06-27 22:28:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:54,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738674029] [2024-06-27 22:28:54,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738674029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:54,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:54,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:28:54,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745381300] [2024-06-27 22:28:54,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:54,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:28:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:54,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:28:54,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:28:55,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:55,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 489 transitions, 9306 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:55,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:55,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:55,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:58,057 INFO L124 PetriNetUnfolderBase]: 8215/12992 cut-off events. [2024-06-27 22:28:58,057 INFO L125 PetriNetUnfolderBase]: For 422558/422567 co-relation queries the response was YES. [2024-06-27 22:28:58,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89090 conditions, 12992 events. 8215/12992 cut-off events. For 422558/422567 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 86086 event pairs, 1836 based on Foata normal form. 18/12705 useless extension candidates. Maximal degree in co-relation 88986. Up to 10250 conditions per place. [2024-06-27 22:28:58,233 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 334 selfloop transitions, 191 changer transitions 0/536 dead transitions. [2024-06-27 22:28:58,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 536 transitions, 10608 flow [2024-06-27 22:28:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:28:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:28:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 22:28:58,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:28:58,235 INFO L175 Difference]: Start difference. First operand has 257 places, 489 transitions, 9306 flow. Second operand 9 states and 216 transitions. [2024-06-27 22:28:58,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 536 transitions, 10608 flow [2024-06-27 22:28:59,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 536 transitions, 10213 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:59,074 INFO L231 Difference]: Finished difference. Result has 260 places, 489 transitions, 9300 flow [2024-06-27 22:28:59,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8911, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9300, PETRI_PLACES=260, PETRI_TRANSITIONS=489} [2024-06-27 22:28:59,075 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-27 22:28:59,075 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 489 transitions, 9300 flow [2024-06-27 22:28:59,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:59,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:59,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:59,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:28:59,076 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:59,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash -356880605, now seen corresponding path program 3 times [2024-06-27 22:28:59,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:59,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423918396] [2024-06-27 22:28:59,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:59,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:00,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:00,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:00,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423918396] [2024-06-27 22:29:00,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423918396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:00,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:00,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:29:00,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879885561] [2024-06-27 22:29:00,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:00,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:29:00,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:00,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:29:00,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:29:00,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:29:00,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 489 transitions, 9300 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:00,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:00,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:29:00,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:03,737 INFO L124 PetriNetUnfolderBase]: 8449/13339 cut-off events. [2024-06-27 22:29:03,737 INFO L125 PetriNetUnfolderBase]: For 453978/453987 co-relation queries the response was YES. [2024-06-27 22:29:03,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92007 conditions, 13339 events. 8449/13339 cut-off events. For 453978/453987 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 88567 event pairs, 1537 based on Foata normal form. 18/13057 useless extension candidates. Maximal degree in co-relation 91902. Up to 8786 conditions per place. [2024-06-27 22:29:03,953 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 317 selfloop transitions, 213 changer transitions 0/541 dead transitions. [2024-06-27 22:29:03,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 541 transitions, 10862 flow [2024-06-27 22:29:03,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 22:29:03,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-06-27 22:29:03,956 INFO L175 Difference]: Start difference. First operand has 260 places, 489 transitions, 9300 flow. Second operand 9 states and 217 transitions. [2024-06-27 22:29:03,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 541 transitions, 10862 flow [2024-06-27 22:29:04,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 541 transitions, 10160 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:04,987 INFO L231 Difference]: Finished difference. Result has 260 places, 493 transitions, 9131 flow [2024-06-27 22:29:04,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8598, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9131, PETRI_PLACES=260, PETRI_TRANSITIONS=493} [2024-06-27 22:29:04,991 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-27 22:29:04,991 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 493 transitions, 9131 flow [2024-06-27 22:29:04,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:04,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:04,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:04,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:29:04,997 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:04,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:04,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1216046460, now seen corresponding path program 2 times [2024-06-27 22:29:04,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:04,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687602726] [2024-06-27 22:29:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:04,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:06,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:06,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687602726] [2024-06-27 22:29:06,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687602726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:06,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:06,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:29:06,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111980899] [2024-06-27 22:29:06,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:06,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:29:06,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:06,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:29:06,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:29:06,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:29:06,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 493 transitions, 9131 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-27 22:29:06,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:06,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:29:06,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:08,616 INFO L124 PetriNetUnfolderBase]: 8740/13622 cut-off events. [2024-06-27 22:29:08,616 INFO L125 PetriNetUnfolderBase]: For 457431/457449 co-relation queries the response was YES. [2024-06-27 22:29:08,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91724 conditions, 13622 events. 8740/13622 cut-off events. For 457431/457449 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 88528 event pairs, 2734 based on Foata normal form. 13/13369 useless extension candidates. Maximal degree in co-relation 91620. Up to 12471 conditions per place. [2024-06-27 22:29:08,830 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 460 selfloop transitions, 56 changer transitions 0/524 dead transitions. [2024-06-27 22:29:08,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 524 transitions, 10633 flow [2024-06-27 22:29:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:29:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:29:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 22:29:08,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-27 22:29:08,832 INFO L175 Difference]: Start difference. First operand has 260 places, 493 transitions, 9131 flow. Second operand 7 states and 153 transitions. [2024-06-27 22:29:08,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 524 transitions, 10633 flow [2024-06-27 22:29:10,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 524 transitions, 10382 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 22:29:10,032 INFO L231 Difference]: Finished difference. Result has 262 places, 505 transitions, 9217 flow [2024-06-27 22:29:10,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8880, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9217, PETRI_PLACES=262, PETRI_TRANSITIONS=505} [2024-06-27 22:29:10,033 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 208 predicate places. [2024-06-27 22:29:10,033 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 505 transitions, 9217 flow [2024-06-27 22:29:10,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-27 22:29:10,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:10,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:29:10,033 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:10,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1272067123, now seen corresponding path program 3 times [2024-06-27 22:29:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:10,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53539883] [2024-06-27 22:29:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:10,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:11,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:11,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53539883] [2024-06-27 22:29:11,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53539883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:11,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:11,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:29:11,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790301428] [2024-06-27 22:29:11,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:11,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:29:11,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:11,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:29:11,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:29:11,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:29:11,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 505 transitions, 9217 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) [2024-06-27 22:29:11,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:11,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:29:11,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:13,599 INFO L124 PetriNetUnfolderBase]: 8519/13423 cut-off events. [2024-06-27 22:29:13,599 INFO L125 PetriNetUnfolderBase]: For 472223/472236 co-relation queries the response was YES. [2024-06-27 22:29:13,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92229 conditions, 13423 events. 8519/13423 cut-off events. For 472223/472236 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 88541 event pairs, 2574 based on Foata normal form. 8/13150 useless extension candidates. Maximal degree in co-relation 92123. Up to 11680 conditions per place. [2024-06-27 22:29:13,805 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 433 selfloop transitions, 96 changer transitions 0/543 dead transitions. [2024-06-27 22:29:13,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 543 transitions, 10920 flow [2024-06-27 22:29:13,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:13,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-27 22:29:13,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-27 22:29:13,811 INFO L175 Difference]: Start difference. First operand has 262 places, 505 transitions, 9217 flow. Second operand 8 states and 177 transitions. [2024-06-27 22:29:13,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 543 transitions, 10920 flow [2024-06-27 22:29:15,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 543 transitions, 10819 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-27 22:29:15,157 INFO L231 Difference]: Finished difference. Result has 269 places, 519 transitions, 9585 flow [2024-06-27 22:29:15,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9116, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9585, PETRI_PLACES=269, PETRI_TRANSITIONS=519} [2024-06-27 22:29:15,158 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 215 predicate places. [2024-06-27 22:29:15,158 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 519 transitions, 9585 flow [2024-06-27 22:29:15,158 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) [2024-06-27 22:29:15,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:15,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:15,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:29:15,159 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:15,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:15,160 INFO L85 PathProgramCache]: Analyzing trace with hash 410070590, now seen corresponding path program 3 times [2024-06-27 22:29:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:15,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127965065] [2024-06-27 22:29:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:15,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:16,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:16,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127965065] [2024-06-27 22:29:16,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127965065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:16,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:16,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:29:16,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589631222] [2024-06-27 22:29:16,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:16,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:29:16,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:29:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:29:16,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:29:16,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 519 transitions, 9585 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-27 22:29:16,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:16,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:29:16,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:19,043 INFO L124 PetriNetUnfolderBase]: 8793/13694 cut-off events. [2024-06-27 22:29:19,044 INFO L125 PetriNetUnfolderBase]: For 494324/494342 co-relation queries the response was YES. [2024-06-27 22:29:19,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96176 conditions, 13694 events. 8793/13694 cut-off events. For 494324/494342 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 89025 event pairs, 2733 based on Foata normal form. 13/13441 useless extension candidates. Maximal degree in co-relation 96067. Up to 12543 conditions per place. [2024-06-27 22:29:19,212 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 470 selfloop transitions, 59 changer transitions 0/537 dead transitions. [2024-06-27 22:29:19,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 537 transitions, 10811 flow [2024-06-27 22:29:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-27 22:29:19,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 22:29:19,220 INFO L175 Difference]: Start difference. First operand has 269 places, 519 transitions, 9585 flow. Second operand 8 states and 162 transitions. [2024-06-27 22:29:19,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 537 transitions, 10811 flow [2024-06-27 22:29:20,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 537 transitions, 10599 flow, removed 79 selfloop flow, removed 3 redundant places. [2024-06-27 22:29:20,285 INFO L231 Difference]: Finished difference. Result has 274 places, 519 transitions, 9498 flow [2024-06-27 22:29:20,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9373, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9498, PETRI_PLACES=274, PETRI_TRANSITIONS=519} [2024-06-27 22:29:20,286 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 220 predicate places. [2024-06-27 22:29:20,286 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 519 transitions, 9498 flow [2024-06-27 22:29:20,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-27 22:29:20,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:20,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:20,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:29:20,286 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:20,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:20,287 INFO L85 PathProgramCache]: Analyzing trace with hash 807577141, now seen corresponding path program 7 times [2024-06-27 22:29:20,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:20,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652812810] [2024-06-27 22:29:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:20,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:21,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:21,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652812810] [2024-06-27 22:29:21,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652812810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:21,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:21,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:21,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720229502] [2024-06-27 22:29:21,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:21,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:21,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:21,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:21,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:29:21,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 519 transitions, 9498 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) [2024-06-27 22:29:21,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:21,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:29:21,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:24,581 INFO L124 PetriNetUnfolderBase]: 8748/13780 cut-off events. [2024-06-27 22:29:24,582 INFO L125 PetriNetUnfolderBase]: For 520474/520494 co-relation queries the response was YES. [2024-06-27 22:29:24,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96278 conditions, 13780 events. 8748/13780 cut-off events. For 520474/520494 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 91443 event pairs, 1919 based on Foata normal form. 16/13503 useless extension candidates. Maximal degree in co-relation 96167. Up to 10715 conditions per place. [2024-06-27 22:29:24,782 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 372 selfloop transitions, 203 changer transitions 0/589 dead transitions. [2024-06-27 22:29:24,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 589 transitions, 11124 flow [2024-06-27 22:29:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:24,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 22:29:24,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-06-27 22:29:24,784 INFO L175 Difference]: Start difference. First operand has 274 places, 519 transitions, 9498 flow. Second operand 9 states and 236 transitions. [2024-06-27 22:29:24,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 589 transitions, 11124 flow [2024-06-27 22:29:25,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 589 transitions, 11006 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:29:25,855 INFO L231 Difference]: Finished difference. Result has 278 places, 527 transitions, 9962 flow [2024-06-27 22:29:25,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9380, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9962, PETRI_PLACES=278, PETRI_TRANSITIONS=527} [2024-06-27 22:29:25,856 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 224 predicate places. [2024-06-27 22:29:25,856 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 527 transitions, 9962 flow [2024-06-27 22:29:25,856 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) [2024-06-27 22:29:25,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:25,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:25,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:29:25,857 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:25,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:25,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1189387075, now seen corresponding path program 8 times [2024-06-27 22:29:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:25,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203983364] [2024-06-27 22:29:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:25,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:26,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:26,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203983364] [2024-06-27 22:29:26,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203983364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:26,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:26,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:26,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121771500] [2024-06-27 22:29:26,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:26,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:26,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:26,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:26,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:27,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:29:27,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 527 transitions, 9962 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) [2024-06-27 22:29:27,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:27,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:29:27,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:30,532 INFO L124 PetriNetUnfolderBase]: 10056/15760 cut-off events. [2024-06-27 22:29:30,532 INFO L125 PetriNetUnfolderBase]: For 587103/587123 co-relation queries the response was YES. [2024-06-27 22:29:30,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109873 conditions, 15760 events. 10056/15760 cut-off events. For 587103/587123 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 106371 event pairs, 2253 based on Foata normal form. 16/15483 useless extension candidates. Maximal degree in co-relation 109760. Up to 10520 conditions per place. [2024-06-27 22:29:30,774 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 389 selfloop transitions, 225 changer transitions 0/628 dead transitions. [2024-06-27 22:29:30,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 628 transitions, 12206 flow [2024-06-27 22:29:30,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 22:29:30,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-06-27 22:29:30,776 INFO L175 Difference]: Start difference. First operand has 278 places, 527 transitions, 9962 flow. Second operand 9 states and 237 transitions. [2024-06-27 22:29:30,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 628 transitions, 12206 flow [2024-06-27 22:29:32,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 628 transitions, 11923 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 22:29:32,055 INFO L231 Difference]: Finished difference. Result has 284 places, 561 transitions, 10784 flow [2024-06-27 22:29:32,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9693, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10784, PETRI_PLACES=284, PETRI_TRANSITIONS=561} [2024-06-27 22:29:32,056 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 230 predicate places. [2024-06-27 22:29:32,056 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 561 transitions, 10784 flow [2024-06-27 22:29:32,056 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) [2024-06-27 22:29:32,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:32,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:32,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:29:32,056 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:32,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:32,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1082803879, now seen corresponding path program 9 times [2024-06-27 22:29:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:32,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632033713] [2024-06-27 22:29:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:32,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:32,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:32,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632033713] [2024-06-27 22:29:32,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632033713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:32,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:32,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:29:32,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464360172] [2024-06-27 22:29:32,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:32,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:29:32,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:32,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:29:32,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:29:33,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:29:33,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 561 transitions, 10784 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:33,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:33,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:29:33,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:36,612 INFO L124 PetriNetUnfolderBase]: 9397/15426 cut-off events. [2024-06-27 22:29:36,612 INFO L125 PetriNetUnfolderBase]: For 535785/536849 co-relation queries the response was YES. [2024-06-27 22:29:36,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106853 conditions, 15426 events. 9397/15426 cut-off events. For 535785/536849 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 112848 event pairs, 1307 based on Foata normal form. 346/15034 useless extension candidates. Maximal degree in co-relation 106736. Up to 7584 conditions per place. [2024-06-27 22:29:36,911 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 294 selfloop transitions, 273 changer transitions 0/658 dead transitions. [2024-06-27 22:29:36,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 658 transitions, 12892 flow [2024-06-27 22:29:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-27 22:29:36,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-06-27 22:29:36,913 INFO L175 Difference]: Start difference. First operand has 284 places, 561 transitions, 10784 flow. Second operand 8 states and 222 transitions. [2024-06-27 22:29:36,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 658 transitions, 12892 flow [2024-06-27 22:29:38,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 658 transitions, 12625 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 22:29:38,534 INFO L231 Difference]: Finished difference. Result has 291 places, 603 transitions, 11964 flow [2024-06-27 22:29:38,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10523, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11964, PETRI_PLACES=291, PETRI_TRANSITIONS=603} [2024-06-27 22:29:38,549 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 237 predicate places. [2024-06-27 22:29:38,549 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 603 transitions, 11964 flow [2024-06-27 22:29:38,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:38,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:38,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:38,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:29:38,550 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:38,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1572749987, now seen corresponding path program 10 times [2024-06-27 22:29:38,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:38,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44040826] [2024-06-27 22:29:38,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:38,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:40,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:40,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44040826] [2024-06-27 22:29:40,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44040826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:40,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:40,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:40,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009216565] [2024-06-27 22:29:40,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:40,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:40,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:40,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:40,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:40,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:29:40,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 603 transitions, 11964 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) [2024-06-27 22:29:40,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:40,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:29:40,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:45,259 INFO L124 PetriNetUnfolderBase]: 11550/18119 cut-off events. [2024-06-27 22:29:45,259 INFO L125 PetriNetUnfolderBase]: For 633541/633567 co-relation queries the response was YES. [2024-06-27 22:29:45,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130483 conditions, 18119 events. 11550/18119 cut-off events. For 633541/633567 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 125574 event pairs, 3097 based on Foata normal form. 26/17853 useless extension candidates. Maximal degree in co-relation 130361. Up to 15233 conditions per place. [2024-06-27 22:29:45,494 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 452 selfloop transitions, 201 changer transitions 0/667 dead transitions. [2024-06-27 22:29:45,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 667 transitions, 13716 flow [2024-06-27 22:29:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:45,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 22:29:45,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:29:45,496 INFO L175 Difference]: Start difference. First operand has 291 places, 603 transitions, 11964 flow. Second operand 9 states and 234 transitions. [2024-06-27 22:29:45,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 667 transitions, 13716 flow [2024-06-27 22:29:47,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 667 transitions, 13554 flow, removed 71 selfloop flow, removed 2 redundant places. [2024-06-27 22:29:47,167 INFO L231 Difference]: Finished difference. Result has 298 places, 607 transitions, 12348 flow [2024-06-27 22:29:47,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11822, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12348, PETRI_PLACES=298, PETRI_TRANSITIONS=607} [2024-06-27 22:29:47,168 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 244 predicate places. [2024-06-27 22:29:47,168 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 607 transitions, 12348 flow [2024-06-27 22:29:47,168 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) [2024-06-27 22:29:47,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:47,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:47,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:29:47,168 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:47,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:47,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1601034141, now seen corresponding path program 4 times [2024-06-27 22:29:47,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:47,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132225852] [2024-06-27 22:29:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:47,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:47,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:47,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132225852] [2024-06-27 22:29:47,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132225852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:47,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:29:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790333894] [2024-06-27 22:29:47,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:47,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:29:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:47,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:29:47,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:29:47,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:29:47,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 607 transitions, 12348 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) [2024-06-27 22:29:47,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:47,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:29:47,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:52,735 INFO L124 PetriNetUnfolderBase]: 11626/18192 cut-off events. [2024-06-27 22:29:52,736 INFO L125 PetriNetUnfolderBase]: For 639061/639080 co-relation queries the response was YES. [2024-06-27 22:29:52,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132062 conditions, 18192 events. 11626/18192 cut-off events. For 639061/639080 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 125874 event pairs, 3989 based on Foata normal form. 14/17940 useless extension candidates. Maximal degree in co-relation 131938. Up to 16467 conditions per place. [2024-06-27 22:29:52,979 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 563 selfloop transitions, 90 changer transitions 0/667 dead transitions. [2024-06-27 22:29:52,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 667 transitions, 14436 flow [2024-06-27 22:29:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:29:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:29:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:29:52,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 22:29:52,989 INFO L175 Difference]: Start difference. First operand has 298 places, 607 transitions, 12348 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:29:52,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 667 transitions, 14436 flow [2024-06-27 22:29:54,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 667 transitions, 14087 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:29:54,940 INFO L231 Difference]: Finished difference. Result has 302 places, 635 transitions, 12985 flow [2024-06-27 22:29:54,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12017, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12985, PETRI_PLACES=302, PETRI_TRANSITIONS=635} [2024-06-27 22:29:54,941 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 248 predicate places. [2024-06-27 22:29:54,941 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 635 transitions, 12985 flow [2024-06-27 22:29:54,941 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) [2024-06-27 22:29:54,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:54,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:54,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:29:54,942 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:54,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:54,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1905365417, now seen corresponding path program 11 times [2024-06-27 22:29:54,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:54,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100925398] [2024-06-27 22:29:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:54,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:56,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:56,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100925398] [2024-06-27 22:29:56,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100925398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:56,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:56,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:56,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065689941] [2024-06-27 22:29:56,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:56,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:56,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:56,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:56,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:56,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:29:56,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 635 transitions, 12985 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) [2024-06-27 22:29:56,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:56,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:29:56,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:01,381 INFO L124 PetriNetUnfolderBase]: 12163/19013 cut-off events. [2024-06-27 22:30:01,381 INFO L125 PetriNetUnfolderBase]: For 674168/674192 co-relation queries the response was YES. [2024-06-27 22:30:01,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137595 conditions, 19013 events. 12163/19013 cut-off events. For 674168/674192 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 132189 event pairs, 3128 based on Foata normal form. 20/18741 useless extension candidates. Maximal degree in co-relation 137467. Up to 15162 conditions per place. [2024-06-27 22:30:01,671 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 479 selfloop transitions, 225 changer transitions 0/718 dead transitions. [2024-06-27 22:30:01,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 718 transitions, 15318 flow [2024-06-27 22:30:01,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:30:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:30:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-27 22:30:01,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 22:30:01,673 INFO L175 Difference]: Start difference. First operand has 302 places, 635 transitions, 12985 flow. Second operand 9 states and 240 transitions. [2024-06-27 22:30:01,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 718 transitions, 15318 flow [2024-06-27 22:30:03,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 718 transitions, 15227 flow, removed 41 selfloop flow, removed 1 redundant places. [2024-06-27 22:30:03,386 INFO L231 Difference]: Finished difference. Result has 311 places, 652 transitions, 13789 flow [2024-06-27 22:30:03,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12898, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13789, PETRI_PLACES=311, PETRI_TRANSITIONS=652} [2024-06-27 22:30:03,387 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 257 predicate places. [2024-06-27 22:30:03,387 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 652 transitions, 13789 flow [2024-06-27 22:30:03,388 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) [2024-06-27 22:30:03,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:03,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:03,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:30:03,388 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:03,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:03,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1899855167, now seen corresponding path program 12 times [2024-06-27 22:30:03,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:03,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450129210] [2024-06-27 22:30:03,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:03,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:04,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:04,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450129210] [2024-06-27 22:30:04,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450129210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:04,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:04,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:30:04,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967938443] [2024-06-27 22:30:04,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:04,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:30:04,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:04,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:30:04,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:30:04,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:30:04,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 652 transitions, 13789 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) [2024-06-27 22:30:04,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:04,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:30:04,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:09,880 INFO L124 PetriNetUnfolderBase]: 12255/19153 cut-off events. [2024-06-27 22:30:09,880 INFO L125 PetriNetUnfolderBase]: For 688608/688628 co-relation queries the response was YES. [2024-06-27 22:30:10,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140316 conditions, 19153 events. 12255/19153 cut-off events. For 688608/688628 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 133209 event pairs, 3203 based on Foata normal form. 20/18878 useless extension candidates. Maximal degree in co-relation 140185. Up to 16234 conditions per place. [2024-06-27 22:30:10,357 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 495 selfloop transitions, 202 changer transitions 0/711 dead transitions. [2024-06-27 22:30:10,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 711 transitions, 15555 flow [2024-06-27 22:30:10,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:30:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:30:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 22:30:10,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-27 22:30:10,359 INFO L175 Difference]: Start difference. First operand has 311 places, 652 transitions, 13789 flow. Second operand 9 states and 232 transitions. [2024-06-27 22:30:10,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 711 transitions, 15555 flow [2024-06-27 22:30:12,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 711 transitions, 15119 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 22:30:12,426 INFO L231 Difference]: Finished difference. Result has 314 places, 654 transitions, 13819 flow [2024-06-27 22:30:12,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=13353, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13819, PETRI_PLACES=314, PETRI_TRANSITIONS=654} [2024-06-27 22:30:12,428 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 260 predicate places. [2024-06-27 22:30:12,428 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 654 transitions, 13819 flow [2024-06-27 22:30:12,429 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) [2024-06-27 22:30:12,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:12,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:12,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:30:12,429 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:12,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:12,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1899639965, now seen corresponding path program 4 times [2024-06-27 22:30:12,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:12,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518605964] [2024-06-27 22:30:12,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:12,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat