./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.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/mix011_power.oepc_pso.oepc_rmo.oepc.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/mix011_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix011_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:06:09,097 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:06:09,172 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:06:09,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:06:09,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:06:09,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:06:09,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:06:09,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:06:09,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:06:09,205 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:06:09,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:06:09,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:06:09,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:06:09,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:06:09,206 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:06:09,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:06:09,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:06:09,207 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:06:09,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:06:09,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:06:09,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:06:09,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:06:09,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:06:09,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:06:09,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:06:09,209 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:06:09,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:06:09,210 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:06:09,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:06:09,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:06:09,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:06:09,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:06:09,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:06:09,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:06:09,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:06:09,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:06:09,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:06:09,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:06:09,213 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:06:09,213 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:06:09,213 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:06:09,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:06:09,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:06:09,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:06:09,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:06:09,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:06:09,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:06:09,428 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:06:09,428 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:06:09,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:06:10,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:06:10,770 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:06:10,776 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:06:10,792 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad5e2a22/4c287dac98bf4c00bc6241347e51439f/FLAGc9bbceb02 [2024-06-27 22:06:10,803 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad5e2a22/4c287dac98bf4c00bc6241347e51439f [2024-06-27 22:06:10,805 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:06:10,806 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:06:10,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix011_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 22:06:10,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:06:10,885 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:06:10,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:06:10,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:06:10,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:06:10,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:06:10" (1/2) ... [2024-06-27 22:06:10,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592419fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:06:10, skipping insertion in model container [2024-06-27 22:06:10,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:06:10" (1/2) ... [2024-06-27 22:06:10,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@595fb37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:06:10, skipping insertion in model container [2024-06-27 22:06:10,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:06:10" (2/2) ... [2024-06-27 22:06:10,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592419fc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:10, skipping insertion in model container [2024-06-27 22:06:10,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:06:10" (2/2) ... [2024-06-27 22:06:10,895 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:06:10,923 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:06:10,924 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-27 22:06:10,925 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-27 22:06:10,925 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-27 22:06:10,925 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:06:10,925 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-27 22:06:10,970 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:06:11,099 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/mix011_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 22:06:11,223 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:06:11,231 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:06:11,267 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/mix011_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:06:11,440 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:06:11,477 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:06:11,492 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11 WrapperNode [2024-06-27 22:06:11,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:06:11,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:06:11,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:06:11,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:06:11,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,601 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2024-06-27 22:06:11,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:06:11,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:06:11,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:06:11,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:06:11,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,651 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 22:06:11,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,678 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,689 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:06:11,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:06:11,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:06:11,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:06:11,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (1/1) ... [2024-06-27 22:06:11,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:06:11,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:06:11,732 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 22:06:11,740 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 22:06:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:06:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:06:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:06:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:06:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:06:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:06:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:06:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:06:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:06:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:06:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:06:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:06:11,783 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 22:06:11,915 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:06:11,916 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:06:12,432 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:06:12,433 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:06:12,557 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:06:12,557 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:06:12,557 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:06:12 BoogieIcfgContainer [2024-06-27 22:06:12,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:06:12,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:06:12,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:06:12,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:06:12,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:06:10" (1/4) ... [2024-06-27 22:06:12,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202ebab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:06:12, skipping insertion in model container [2024-06-27 22:06:12,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:06:10" (2/4) ... [2024-06-27 22:06:12,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202ebab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:06:12, skipping insertion in model container [2024-06-27 22:06:12,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:06:11" (3/4) ... [2024-06-27 22:06:12,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202ebab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:06:12, skipping insertion in model container [2024-06-27 22:06:12,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:06:12" (4/4) ... [2024-06-27 22:06:12,563 INFO L112 eAbstractionObserver]: Analyzing ICFG mix011_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:06:12,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:06:12,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:06:12,576 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:06:12,639 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:06:12,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 22:06:12,684 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-27 22:06:12,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:06:12,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-27 22:06:12,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 22:06:12,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-27 22:06:12,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:06:12,712 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;@1058d11f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:06:12,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:06:12,716 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:06:12,717 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:06:12,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:06:12,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:12,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:06:12,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:12,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:12,722 INFO L85 PathProgramCache]: Analyzing trace with hash 347829558, now seen corresponding path program 1 times [2024-06-27 22:06:12,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:12,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485346576] [2024-06-27 22:06:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:12,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:14,535 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 22:06:14,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:14,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485346576] [2024-06-27 22:06:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485346576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:14,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:14,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:06:14,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273834005] [2024-06-27 22:06:14,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:14,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:06:14,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:14,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:06:14,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:06:14,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-06-27 22:06:14,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 22:06:14,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:14,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-06-27 22:06:14,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:15,303 INFO L124 PetriNetUnfolderBase]: 3107/5186 cut-off events. [2024-06-27 22:06:15,303 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-06-27 22:06:15,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9755 conditions, 5186 events. 3107/5186 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 34559 event pairs, 2546 based on Foata normal form. 150/4863 useless extension candidates. Maximal degree in co-relation 9743. Up to 4482 conditions per place. [2024-06-27 22:06:15,330 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 40 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-06-27 22:06:15,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 221 flow [2024-06-27 22:06:15,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:06:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:06:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 22:06:15,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7074829931972789 [2024-06-27 22:06:15,341 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 104 transitions. [2024-06-27 22:06:15,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 221 flow [2024-06-27 22:06:15,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:15,348 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 128 flow [2024-06-27 22:06:15,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-27 22:06:15,352 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-27 22:06:15,352 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 128 flow [2024-06-27 22:06:15,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 22:06:15,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:15,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:15,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:06:15,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:15,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:15,354 INFO L85 PathProgramCache]: Analyzing trace with hash -743197836, now seen corresponding path program 1 times [2024-06-27 22:06:15,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:15,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77861808] [2024-06-27 22:06:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:15,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:16,319 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 22:06:16,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:16,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77861808] [2024-06-27 22:06:16,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77861808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:16,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:16,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:06:16,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730964716] [2024-06-27 22:06:16,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:16,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:06:16,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:16,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:06:16,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:06:16,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-06-27 22:06:16,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:16,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:16,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-06-27 22:06:16,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:16,972 INFO L124 PetriNetUnfolderBase]: 3109/5197 cut-off events. [2024-06-27 22:06:16,973 INFO L125 PetriNetUnfolderBase]: For 774/778 co-relation queries the response was YES. [2024-06-27 22:06:16,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10920 conditions, 5197 events. 3109/5197 cut-off events. For 774/778 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 34531 event pairs, 2262 based on Foata normal form. 5/4775 useless extension candidates. Maximal degree in co-relation 10908. Up to 4467 conditions per place. [2024-06-27 22:06:16,998 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 50 selfloop transitions, 8 changer transitions 1/74 dead transitions. [2024-06-27 22:06:16,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 319 flow [2024-06-27 22:06:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:06:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:06:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-06-27 22:06:17,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6683673469387755 [2024-06-27 22:06:17,000 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 128 flow. Second operand 4 states and 131 transitions. [2024-06-27 22:06:17,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 319 flow [2024-06-27 22:06:17,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:17,002 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 193 flow [2024-06-27 22:06:17,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-06-27 22:06:17,003 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-06-27 22:06:17,003 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 193 flow [2024-06-27 22:06:17,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:17,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:17,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:17,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:06:17,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:17,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:17,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1248500301, now seen corresponding path program 1 times [2024-06-27 22:06:17,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:17,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489921425] [2024-06-27 22:06:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:17,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:18,855 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 22:06:18,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:18,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489921425] [2024-06-27 22:06:18,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489921425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:18,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:18,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:18,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385539738] [2024-06-27 22:06:18,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:18,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:18,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:18,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:18,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:18,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 22:06:18,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:18,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:18,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 22:06:18,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:19,795 INFO L124 PetriNetUnfolderBase]: 4496/6943 cut-off events. [2024-06-27 22:06:19,795 INFO L125 PetriNetUnfolderBase]: For 2945/2951 co-relation queries the response was YES. [2024-06-27 22:06:19,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16526 conditions, 6943 events. 4496/6943 cut-off events. For 2945/2951 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 43557 event pairs, 1750 based on Foata normal form. 9/6570 useless extension candidates. Maximal degree in co-relation 16511. Up to 6243 conditions per place. [2024-06-27 22:06:19,825 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 74 selfloop transitions, 25 changer transitions 3/115 dead transitions. [2024-06-27 22:06:19,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 580 flow [2024-06-27 22:06:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-06-27 22:06:19,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-06-27 22:06:19,828 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 193 flow. Second operand 6 states and 192 transitions. [2024-06-27 22:06:19,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 580 flow [2024-06-27 22:06:19,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 115 transitions, 562 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:19,834 INFO L231 Difference]: Finished difference. Result has 66 places, 70 transitions, 340 flow [2024-06-27 22:06:19,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2024-06-27 22:06:19,835 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2024-06-27 22:06:19,835 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 340 flow [2024-06-27 22:06:19,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:19,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:19,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:19,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:06:19,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:19,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:19,836 INFO L85 PathProgramCache]: Analyzing trace with hash -48802076, now seen corresponding path program 1 times [2024-06-27 22:06:19,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:19,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55236845] [2024-06-27 22:06:19,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:19,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:21,842 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 22:06:21,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:21,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55236845] [2024-06-27 22:06:21,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55236845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:21,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:21,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:21,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186810350] [2024-06-27 22:06:21,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:21,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:21,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:21,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:21,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:21,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 22:06:21,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 22:06:21,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:21,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 22:06:21,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:22,927 INFO L124 PetriNetUnfolderBase]: 4524/6997 cut-off events. [2024-06-27 22:06:22,927 INFO L125 PetriNetUnfolderBase]: For 6898/6904 co-relation queries the response was YES. [2024-06-27 22:06:22,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19128 conditions, 6997 events. 4524/6997 cut-off events. For 6898/6904 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 43865 event pairs, 1492 based on Foata normal form. 14/6626 useless extension candidates. Maximal degree in co-relation 19109. Up to 6203 conditions per place. [2024-06-27 22:06:22,964 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 81 selfloop transitions, 28 changer transitions 4/126 dead transitions. [2024-06-27 22:06:22,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 126 transitions, 722 flow [2024-06-27 22:06:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 219 transitions. [2024-06-27 22:06:22,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384839650145773 [2024-06-27 22:06:22,967 INFO L175 Difference]: Start difference. First operand has 66 places, 70 transitions, 340 flow. Second operand 7 states and 219 transitions. [2024-06-27 22:06:22,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 126 transitions, 722 flow [2024-06-27 22:06:22,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 126 transitions, 699 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:22,973 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 401 flow [2024-06-27 22:06:22,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2024-06-27 22:06:22,974 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-06-27 22:06:22,974 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 401 flow [2024-06-27 22:06:22,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 22:06:22,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:22,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:22,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:06:22,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:22,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -879833259, now seen corresponding path program 1 times [2024-06-27 22:06:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:22,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311333780] [2024-06-27 22:06:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:23,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:23,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311333780] [2024-06-27 22:06:23,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311333780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:23,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:23,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:06:23,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212347888] [2024-06-27 22:06:23,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:23,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:06:23,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:23,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:06:23,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:06:23,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-06-27 22:06:23,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:23,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:23,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-06-27 22:06:23,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:23,390 INFO L124 PetriNetUnfolderBase]: 1475/3019 cut-off events. [2024-06-27 22:06:23,391 INFO L125 PetriNetUnfolderBase]: For 1724/1878 co-relation queries the response was YES. [2024-06-27 22:06:23,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7168 conditions, 3019 events. 1475/3019 cut-off events. For 1724/1878 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 22858 event pairs, 764 based on Foata normal form. 11/2783 useless extension candidates. Maximal degree in co-relation 7147. Up to 1873 conditions per place. [2024-06-27 22:06:23,408 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 40 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2024-06-27 22:06:23,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 87 transitions, 523 flow [2024-06-27 22:06:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:06:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:06:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-27 22:06:23,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-06-27 22:06:23,409 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 401 flow. Second operand 3 states and 116 transitions. [2024-06-27 22:06:23,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 87 transitions, 523 flow [2024-06-27 22:06:23,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 455 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:23,416 INFO L231 Difference]: Finished difference. Result has 67 places, 71 transitions, 337 flow [2024-06-27 22:06:23,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=67, PETRI_TRANSITIONS=71} [2024-06-27 22:06:23,418 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-27 22:06:23,421 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 71 transitions, 337 flow [2024-06-27 22:06:23,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:23,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:23,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:23,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:06:23,422 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:23,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:23,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1905692114, now seen corresponding path program 1 times [2024-06-27 22:06:23,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:23,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281694424] [2024-06-27 22:06:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:23,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:25,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:25,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281694424] [2024-06-27 22:06:25,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281694424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:25,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:25,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:25,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421555425] [2024-06-27 22:06:25,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:25,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:25,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:25,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:25,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:25,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:25,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 337 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 22:06:25,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:25,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:25,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:26,770 INFO L124 PetriNetUnfolderBase]: 5222/8490 cut-off events. [2024-06-27 22:06:26,770 INFO L125 PetriNetUnfolderBase]: For 11732/11732 co-relation queries the response was YES. [2024-06-27 22:06:26,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23279 conditions, 8490 events. 5222/8490 cut-off events. For 11732/11732 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 55379 event pairs, 2469 based on Foata normal form. 2/8233 useless extension candidates. Maximal degree in co-relation 23257. Up to 7424 conditions per place. [2024-06-27 22:06:26,808 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 74 selfloop transitions, 16 changer transitions 1/101 dead transitions. [2024-06-27 22:06:26,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 101 transitions, 634 flow [2024-06-27 22:06:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 22:06:26,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-27 22:06:26,810 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 337 flow. Second operand 7 states and 160 transitions. [2024-06-27 22:06:26,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 101 transitions, 634 flow [2024-06-27 22:06:26,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 101 transitions, 620 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:26,814 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 449 flow [2024-06-27 22:06:26,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-06-27 22:06:26,817 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-27 22:06:26,817 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 449 flow [2024-06-27 22:06:26,817 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 22:06:26,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:26,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:26,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:06:26,818 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:26,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:26,818 INFO L85 PathProgramCache]: Analyzing trace with hash 193290696, now seen corresponding path program 1 times [2024-06-27 22:06:26,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:26,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078695629] [2024-06-27 22:06:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:26,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:29,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:29,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078695629] [2024-06-27 22:06:29,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078695629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:29,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:29,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:29,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209040179] [2024-06-27 22:06:29,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:29,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:29,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:29,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:29,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:29,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:29,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 449 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:29,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:29,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:29,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:30,470 INFO L124 PetriNetUnfolderBase]: 4555/7579 cut-off events. [2024-06-27 22:06:30,471 INFO L125 PetriNetUnfolderBase]: For 13497/13497 co-relation queries the response was YES. [2024-06-27 22:06:30,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22025 conditions, 7579 events. 4555/7579 cut-off events. For 13497/13497 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 49999 event pairs, 1993 based on Foata normal form. 2/7364 useless extension candidates. Maximal degree in co-relation 21999. Up to 6481 conditions per place. [2024-06-27 22:06:30,513 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 80 selfloop transitions, 20 changer transitions 0/110 dead transitions. [2024-06-27 22:06:30,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 110 transitions, 737 flow [2024-06-27 22:06:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 22:06:30,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-27 22:06:30,515 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 449 flow. Second operand 8 states and 182 transitions. [2024-06-27 22:06:30,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 110 transitions, 737 flow [2024-06-27 22:06:30,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 110 transitions, 696 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:30,522 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 491 flow [2024-06-27 22:06:30,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=491, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-06-27 22:06:30,523 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-06-27 22:06:30,523 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 491 flow [2024-06-27 22:06:30,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:30,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:30,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:30,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:06:30,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:30,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1491038738, now seen corresponding path program 1 times [2024-06-27 22:06:30,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:30,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767383382] [2024-06-27 22:06:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:30,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:32,047 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 22:06:32,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:32,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767383382] [2024-06-27 22:06:32,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767383382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:32,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:32,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:32,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693323044] [2024-06-27 22:06:32,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:32,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:32,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:32,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:32,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:32,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:32,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 491 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:32,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:32,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:32,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:33,094 INFO L124 PetriNetUnfolderBase]: 4747/7306 cut-off events. [2024-06-27 22:06:33,094 INFO L125 PetriNetUnfolderBase]: For 17781/17790 co-relation queries the response was YES. [2024-06-27 22:06:33,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23897 conditions, 7306 events. 4747/7306 cut-off events. For 17781/17790 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 43302 event pairs, 1684 based on Foata normal form. 6/7240 useless extension candidates. Maximal degree in co-relation 23870. Up to 6594 conditions per place. [2024-06-27 22:06:33,129 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 93 selfloop transitions, 33 changer transitions 0/136 dead transitions. [2024-06-27 22:06:33,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 136 transitions, 1002 flow [2024-06-27 22:06:33,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 22:06:33,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521865889212828 [2024-06-27 22:06:33,131 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 491 flow. Second operand 7 states and 179 transitions. [2024-06-27 22:06:33,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 136 transitions, 1002 flow [2024-06-27 22:06:33,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 136 transitions, 949 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:33,139 INFO L231 Difference]: Finished difference. Result has 81 places, 103 transitions, 702 flow [2024-06-27 22:06:33,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=702, PETRI_PLACES=81, PETRI_TRANSITIONS=103} [2024-06-27 22:06:33,139 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2024-06-27 22:06:33,139 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 103 transitions, 702 flow [2024-06-27 22:06:33,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:33,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:33,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:33,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:06:33,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:33,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:33,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1742625044, now seen corresponding path program 2 times [2024-06-27 22:06:33,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:33,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971976892] [2024-06-27 22:06:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:33,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:34,369 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 22:06:34,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:34,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971976892] [2024-06-27 22:06:34,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971976892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:34,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:34,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:34,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233461644] [2024-06-27 22:06:34,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:34,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:34,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:34,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:34,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 103 transitions, 702 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:34,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:34,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:34,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:35,466 INFO L124 PetriNetUnfolderBase]: 4765/7349 cut-off events. [2024-06-27 22:06:35,467 INFO L125 PetriNetUnfolderBase]: For 24535/24535 co-relation queries the response was YES. [2024-06-27 22:06:35,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26292 conditions, 7349 events. 4765/7349 cut-off events. For 24535/24535 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 43756 event pairs, 1675 based on Foata normal form. 2/7274 useless extension candidates. Maximal degree in co-relation 26262. Up to 6774 conditions per place. [2024-06-27 22:06:35,508 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 103 selfloop transitions, 20 changer transitions 0/133 dead transitions. [2024-06-27 22:06:35,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 1051 flow [2024-06-27 22:06:35,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 22:06:35,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271137026239065 [2024-06-27 22:06:35,511 INFO L175 Difference]: Start difference. First operand has 81 places, 103 transitions, 702 flow. Second operand 7 states and 169 transitions. [2024-06-27 22:06:35,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 1051 flow [2024-06-27 22:06:35,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 133 transitions, 997 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:35,529 INFO L231 Difference]: Finished difference. Result has 86 places, 107 transitions, 746 flow [2024-06-27 22:06:35,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=746, PETRI_PLACES=86, PETRI_TRANSITIONS=107} [2024-06-27 22:06:35,530 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2024-06-27 22:06:35,530 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 107 transitions, 746 flow [2024-06-27 22:06:35,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:35,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:35,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:06:35,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:35,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1495680368, now seen corresponding path program 3 times [2024-06-27 22:06:35,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:35,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899929339] [2024-06-27 22:06:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:36,832 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 22:06:36,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:36,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899929339] [2024-06-27 22:06:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899929339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:36,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:36,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:36,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232596479] [2024-06-27 22:06:36,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:36,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:36,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:36,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:36,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:36,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:36,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 107 transitions, 746 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:36,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:36,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:36,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:38,049 INFO L124 PetriNetUnfolderBase]: 4760/7342 cut-off events. [2024-06-27 22:06:38,049 INFO L125 PetriNetUnfolderBase]: For 27476/27476 co-relation queries the response was YES. [2024-06-27 22:06:38,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26849 conditions, 7342 events. 4760/7342 cut-off events. For 27476/27476 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 43694 event pairs, 1675 based on Foata normal form. 2/7267 useless extension candidates. Maximal degree in co-relation 26817. Up to 6741 conditions per place. [2024-06-27 22:06:38,088 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 104 selfloop transitions, 27 changer transitions 0/141 dead transitions. [2024-06-27 22:06:38,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 141 transitions, 1155 flow [2024-06-27 22:06:38,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 22:06:38,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-27 22:06:38,090 INFO L175 Difference]: Start difference. First operand has 86 places, 107 transitions, 746 flow. Second operand 7 states and 171 transitions. [2024-06-27 22:06:38,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 141 transitions, 1155 flow [2024-06-27 22:06:38,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 141 transitions, 1098 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:38,130 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 861 flow [2024-06-27 22:06:38,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=861, PETRI_PLACES=89, PETRI_TRANSITIONS=115} [2024-06-27 22:06:38,131 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2024-06-27 22:06:38,132 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 861 flow [2024-06-27 22:06:38,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:38,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:38,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:38,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:06:38,134 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:38,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:38,134 INFO L85 PathProgramCache]: Analyzing trace with hash -981658196, now seen corresponding path program 4 times [2024-06-27 22:06:38,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:38,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942097054] [2024-06-27 22:06:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:38,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:40,121 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 22:06:40,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:40,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942097054] [2024-06-27 22:06:40,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942097054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:40,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:40,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:40,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618138201] [2024-06-27 22:06:40,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:40,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:40,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:40,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:40,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:40,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 115 transitions, 861 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:40,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:40,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:40,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:41,721 INFO L124 PetriNetUnfolderBase]: 4986/8264 cut-off events. [2024-06-27 22:06:41,722 INFO L125 PetriNetUnfolderBase]: For 32741/32747 co-relation queries the response was YES. [2024-06-27 22:06:41,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29827 conditions, 8264 events. 4986/8264 cut-off events. For 32741/32747 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 54025 event pairs, 1848 based on Foata normal form. 5/8051 useless extension candidates. Maximal degree in co-relation 29793. Up to 6652 conditions per place. [2024-06-27 22:06:41,771 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 118 selfloop transitions, 92 changer transitions 0/220 dead transitions. [2024-06-27 22:06:41,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 220 transitions, 2082 flow [2024-06-27 22:06:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:41,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:06:41,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331632653061225 [2024-06-27 22:06:41,778 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 861 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:06:41,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 220 transitions, 2082 flow [2024-06-27 22:06:41,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 220 transitions, 1988 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:41,808 INFO L231 Difference]: Finished difference. Result has 97 places, 172 transitions, 1639 flow [2024-06-27 22:06:41,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1639, PETRI_PLACES=97, PETRI_TRANSITIONS=172} [2024-06-27 22:06:41,809 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2024-06-27 22:06:41,824 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 172 transitions, 1639 flow [2024-06-27 22:06:41,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:41,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:41,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:41,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:06:41,824 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:41,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:41,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1055262945, now seen corresponding path program 1 times [2024-06-27 22:06:41,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:41,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906006423] [2024-06-27 22:06:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:43,461 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 22:06:43,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:43,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906006423] [2024-06-27 22:06:43,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906006423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:43,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:43,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:06:43,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070304728] [2024-06-27 22:06:43,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:43,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:06:43,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:43,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:06:43,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:06:43,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:06:43,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 172 transitions, 1639 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 22:06:43,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:43,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:06:43,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:44,952 INFO L124 PetriNetUnfolderBase]: 6263/9661 cut-off events. [2024-06-27 22:06:44,953 INFO L125 PetriNetUnfolderBase]: For 53224/53224 co-relation queries the response was YES. [2024-06-27 22:06:44,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38861 conditions, 9661 events. 6263/9661 cut-off events. For 53224/53224 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 58820 event pairs, 2425 based on Foata normal form. 1/9504 useless extension candidates. Maximal degree in co-relation 38822. Up to 8814 conditions per place. [2024-06-27 22:06:45,003 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 154 selfloop transitions, 12 changer transitions 0/187 dead transitions. [2024-06-27 22:06:45,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 187 transitions, 2039 flow [2024-06-27 22:06:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:06:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:06:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-27 22:06:45,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-27 22:06:45,004 INFO L175 Difference]: Start difference. First operand has 97 places, 172 transitions, 1639 flow. Second operand 5 states and 115 transitions. [2024-06-27 22:06:45,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 187 transitions, 2039 flow [2024-06-27 22:06:45,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 187 transitions, 1967 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:45,047 INFO L231 Difference]: Finished difference. Result has 100 places, 176 transitions, 1644 flow [2024-06-27 22:06:45,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1644, PETRI_PLACES=100, PETRI_TRANSITIONS=176} [2024-06-27 22:06:45,047 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2024-06-27 22:06:45,047 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 176 transitions, 1644 flow [2024-06-27 22:06:45,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 22:06:45,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:45,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:45,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:06:45,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:45,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash 722486384, now seen corresponding path program 1 times [2024-06-27 22:06:45,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:45,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404745271] [2024-06-27 22:06:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:45,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:46,856 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 22:06:46,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:46,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404745271] [2024-06-27 22:06:46,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404745271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:46,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:46,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259832561] [2024-06-27 22:06:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:46,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:46,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:46,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:06:46,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 176 transitions, 1644 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 22:06:46,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:46,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:06:46,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:48,144 INFO L124 PetriNetUnfolderBase]: 5121/8140 cut-off events. [2024-06-27 22:06:48,145 INFO L125 PetriNetUnfolderBase]: For 49656/49662 co-relation queries the response was YES. [2024-06-27 22:06:48,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34224 conditions, 8140 events. 5121/8140 cut-off events. For 49656/49662 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 50848 event pairs, 1757 based on Foata normal form. 6/8018 useless extension candidates. Maximal degree in co-relation 34182. Up to 6858 conditions per place. [2024-06-27 22:06:48,199 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 153 selfloop transitions, 53 changer transitions 0/230 dead transitions. [2024-06-27 22:06:48,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 230 transitions, 2403 flow [2024-06-27 22:06:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 22:06:48,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451895043731778 [2024-06-27 22:06:48,201 INFO L175 Difference]: Start difference. First operand has 100 places, 176 transitions, 1644 flow. Second operand 7 states and 187 transitions. [2024-06-27 22:06:48,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 230 transitions, 2403 flow [2024-06-27 22:06:48,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 230 transitions, 2366 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:48,238 INFO L231 Difference]: Finished difference. Result has 106 places, 189 transitions, 1910 flow [2024-06-27 22:06:48,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1910, PETRI_PLACES=106, PETRI_TRANSITIONS=189} [2024-06-27 22:06:48,239 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-06-27 22:06:48,239 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 189 transitions, 1910 flow [2024-06-27 22:06:48,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 22:06:48,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:48,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:48,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:06:48,239 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:48,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:48,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1026163224, now seen corresponding path program 2 times [2024-06-27 22:06:48,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:48,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249969429] [2024-06-27 22:06:48,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:48,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:49,840 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 22:06:49,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:49,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249969429] [2024-06-27 22:06:49,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249969429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:49,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:49,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:49,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134043300] [2024-06-27 22:06:49,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:49,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:49,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:49,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:49,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:49,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:06:49,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 189 transitions, 1910 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 22:06:49,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:49,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:06:49,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:51,211 INFO L124 PetriNetUnfolderBase]: 5115/8141 cut-off events. [2024-06-27 22:06:51,211 INFO L125 PetriNetUnfolderBase]: For 57211/57217 co-relation queries the response was YES. [2024-06-27 22:06:51,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35901 conditions, 8141 events. 5115/8141 cut-off events. For 57211/57217 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 50996 event pairs, 1748 based on Foata normal form. 6/8018 useless extension candidates. Maximal degree in co-relation 35855. Up to 6920 conditions per place. [2024-06-27 22:06:51,268 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 149 selfloop transitions, 57 changer transitions 0/230 dead transitions. [2024-06-27 22:06:51,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 230 transitions, 2526 flow [2024-06-27 22:06:51,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 22:06:51,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-06-27 22:06:51,271 INFO L175 Difference]: Start difference. First operand has 106 places, 189 transitions, 1910 flow. Second operand 7 states and 184 transitions. [2024-06-27 22:06:51,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 230 transitions, 2526 flow [2024-06-27 22:06:51,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 230 transitions, 2467 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:51,362 INFO L231 Difference]: Finished difference. Result has 113 places, 194 transitions, 2094 flow [2024-06-27 22:06:51,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2094, PETRI_PLACES=113, PETRI_TRANSITIONS=194} [2024-06-27 22:06:51,362 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-27 22:06:51,362 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 194 transitions, 2094 flow [2024-06-27 22:06:51,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 22:06:51,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:51,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:51,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:06:51,363 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:51,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:51,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1022443999, now seen corresponding path program 1 times [2024-06-27 22:06:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:51,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57233008] [2024-06-27 22:06:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:51,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:52,775 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 22:06:52,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:52,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57233008] [2024-06-27 22:06:52,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57233008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:52,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:52,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:52,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166128866] [2024-06-27 22:06:52,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:52,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:52,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:52,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:52,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:52,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:52,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 194 transitions, 2094 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:52,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:52,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:52,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:54,158 INFO L124 PetriNetUnfolderBase]: 5385/8422 cut-off events. [2024-06-27 22:06:54,158 INFO L125 PetriNetUnfolderBase]: For 64680/64690 co-relation queries the response was YES. [2024-06-27 22:06:54,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38399 conditions, 8422 events. 5385/8422 cut-off events. For 64680/64690 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 51532 event pairs, 1895 based on Foata normal form. 6/8303 useless extension candidates. Maximal degree in co-relation 38349. Up to 7247 conditions per place. [2024-06-27 22:06:54,325 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 137 selfloop transitions, 88 changer transitions 0/236 dead transitions. [2024-06-27 22:06:54,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 236 transitions, 2878 flow [2024-06-27 22:06:54,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:54,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:06:54,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247813411078717 [2024-06-27 22:06:54,326 INFO L175 Difference]: Start difference. First operand has 113 places, 194 transitions, 2094 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:06:54,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 236 transitions, 2878 flow [2024-06-27 22:06:54,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 236 transitions, 2761 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:54,379 INFO L231 Difference]: Finished difference. Result has 117 places, 205 transitions, 2404 flow [2024-06-27 22:06:54,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2404, PETRI_PLACES=117, PETRI_TRANSITIONS=205} [2024-06-27 22:06:54,380 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 62 predicate places. [2024-06-27 22:06:54,380 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 205 transitions, 2404 flow [2024-06-27 22:06:54,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:54,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:54,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:54,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:06:54,381 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:54,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:54,381 INFO L85 PathProgramCache]: Analyzing trace with hash 44430787, now seen corresponding path program 2 times [2024-06-27 22:06:54,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:54,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446886091] [2024-06-27 22:06:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:54,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:55,704 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 22:06:55,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:55,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446886091] [2024-06-27 22:06:55,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446886091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:55,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:55,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:55,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562759043] [2024-06-27 22:06:55,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:55,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:55,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:55,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:06:55,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 205 transitions, 2404 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:55,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:55,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:06:55,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:57,158 INFO L124 PetriNetUnfolderBase]: 5417/8466 cut-off events. [2024-06-27 22:06:57,158 INFO L125 PetriNetUnfolderBase]: For 69881/69887 co-relation queries the response was YES. [2024-06-27 22:06:57,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39608 conditions, 8466 events. 5417/8466 cut-off events. For 69881/69887 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 51729 event pairs, 1889 based on Foata normal form. 4/8345 useless extension candidates. Maximal degree in co-relation 39556. Up to 7281 conditions per place. [2024-06-27 22:06:57,210 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 140 selfloop transitions, 92 changer transitions 0/243 dead transitions. [2024-06-27 22:06:57,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 243 transitions, 3172 flow [2024-06-27 22:06:57,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 22:06:57,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189504373177842 [2024-06-27 22:06:57,212 INFO L175 Difference]: Start difference. First operand has 117 places, 205 transitions, 2404 flow. Second operand 7 states and 178 transitions. [2024-06-27 22:06:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 243 transitions, 3172 flow [2024-06-27 22:06:57,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 243 transitions, 2992 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:57,278 INFO L231 Difference]: Finished difference. Result has 121 places, 213 transitions, 2575 flow [2024-06-27 22:06:57,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2236, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2575, PETRI_PLACES=121, PETRI_TRANSITIONS=213} [2024-06-27 22:06:57,279 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2024-06-27 22:06:57,279 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 213 transitions, 2575 flow [2024-06-27 22:06:57,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:57,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:57,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:57,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:06:57,280 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:57,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash 44431004, now seen corresponding path program 1 times [2024-06-27 22:06:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:57,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500419488] [2024-06-27 22:06:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:57,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:58,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:58,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500419488] [2024-06-27 22:06:58,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500419488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:58,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:58,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:58,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130939590] [2024-06-27 22:06:58,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:58,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:58,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:58,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:06:58,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 213 transitions, 2575 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 22:06:58,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:58,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:06:58,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:00,688 INFO L124 PetriNetUnfolderBase]: 6418/10599 cut-off events. [2024-06-27 22:07:00,689 INFO L125 PetriNetUnfolderBase]: For 88038/88044 co-relation queries the response was YES. [2024-06-27 22:07:00,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46824 conditions, 10599 events. 6418/10599 cut-off events. For 88038/88044 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 70567 event pairs, 2196 based on Foata normal form. 5/10271 useless extension candidates. Maximal degree in co-relation 46771. Up to 8323 conditions per place. [2024-06-27 22:07:00,763 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 187 selfloop transitions, 87 changer transitions 0/284 dead transitions. [2024-06-27 22:07:00,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 284 transitions, 3620 flow [2024-06-27 22:07:00,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 22:07:00,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229591836734694 [2024-06-27 22:07:00,766 INFO L175 Difference]: Start difference. First operand has 121 places, 213 transitions, 2575 flow. Second operand 8 states and 205 transitions. [2024-06-27 22:07:00,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 284 transitions, 3620 flow [2024-06-27 22:07:00,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 284 transitions, 3423 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:00,857 INFO L231 Difference]: Finished difference. Result has 128 places, 234 transitions, 2907 flow [2024-06-27 22:07:00,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2907, PETRI_PLACES=128, PETRI_TRANSITIONS=234} [2024-06-27 22:07:00,857 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-06-27 22:07:00,857 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 234 transitions, 2907 flow [2024-06-27 22:07:00,858 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 22:07:00,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:00,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:00,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:07:00,858 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:00,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:00,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1852783526, now seen corresponding path program 2 times [2024-06-27 22:07:00,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:00,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518211309] [2024-06-27 22:07:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:00,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:02,260 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 22:07:02,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:02,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518211309] [2024-06-27 22:07:02,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518211309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:02,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:02,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:02,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499518452] [2024-06-27 22:07:02,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:02,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:02,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:02,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:02,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:02,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:07:02,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 234 transitions, 2907 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 22:07:02,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:02,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:07:02,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:03,848 INFO L124 PetriNetUnfolderBase]: 6383/9891 cut-off events. [2024-06-27 22:07:03,848 INFO L125 PetriNetUnfolderBase]: For 106735/106735 co-relation queries the response was YES. [2024-06-27 22:07:03,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49961 conditions, 9891 events. 6383/9891 cut-off events. For 106735/106735 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 60499 event pairs, 2113 based on Foata normal form. 2/9749 useless extension candidates. Maximal degree in co-relation 49904. Up to 8774 conditions per place. [2024-06-27 22:07:03,930 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 239 selfloop transitions, 43 changer transitions 0/292 dead transitions. [2024-06-27 22:07:03,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 292 transitions, 3880 flow [2024-06-27 22:07:03,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:07:03,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025510204081632 [2024-06-27 22:07:03,932 INFO L175 Difference]: Start difference. First operand has 128 places, 234 transitions, 2907 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:07:03,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 292 transitions, 3880 flow [2024-06-27 22:07:04,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 292 transitions, 3805 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 22:07:04,083 INFO L231 Difference]: Finished difference. Result has 136 places, 247 transitions, 3150 flow [2024-06-27 22:07:04,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3150, PETRI_PLACES=136, PETRI_TRANSITIONS=247} [2024-06-27 22:07:04,084 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 81 predicate places. [2024-06-27 22:07:04,084 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 247 transitions, 3150 flow [2024-06-27 22:07:04,084 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 22:07:04,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:04,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:04,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:07:04,085 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:04,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:04,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1068792902, now seen corresponding path program 3 times [2024-06-27 22:07:04,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:04,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763241661] [2024-06-27 22:07:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:04,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:05,267 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 22:07:05,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:05,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763241661] [2024-06-27 22:07:05,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763241661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:05,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:05,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:05,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923158098] [2024-06-27 22:07:05,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:05,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:05,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:05,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:07:05,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 247 transitions, 3150 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 22:07:05,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:05,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:07:05,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:06,989 INFO L124 PetriNetUnfolderBase]: 6396/9913 cut-off events. [2024-06-27 22:07:06,989 INFO L125 PetriNetUnfolderBase]: For 117410/117410 co-relation queries the response was YES. [2024-06-27 22:07:07,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51433 conditions, 9913 events. 6396/9913 cut-off events. For 117410/117410 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 60620 event pairs, 2122 based on Foata normal form. 6/9774 useless extension candidates. Maximal degree in co-relation 51372. Up to 8903 conditions per place. [2024-06-27 22:07:07,066 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 252 selfloop transitions, 24 changer transitions 0/286 dead transitions. [2024-06-27 22:07:07,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 286 transitions, 3873 flow [2024-06-27 22:07:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:07:07,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-27 22:07:07,067 INFO L175 Difference]: Start difference. First operand has 136 places, 247 transitions, 3150 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:07:07,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 286 transitions, 3873 flow [2024-06-27 22:07:07,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 286 transitions, 3784 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:07,183 INFO L231 Difference]: Finished difference. Result has 141 places, 250 transitions, 3175 flow [2024-06-27 22:07:07,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3061, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3175, PETRI_PLACES=141, PETRI_TRANSITIONS=250} [2024-06-27 22:07:07,183 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2024-06-27 22:07:07,183 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 250 transitions, 3175 flow [2024-06-27 22:07:07,183 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 22:07:07,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:07,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:07,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:07:07,184 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:07,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash 957893006, now seen corresponding path program 4 times [2024-06-27 22:07:07,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502231017] [2024-06-27 22:07:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:08,422 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 22:07:08,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:08,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502231017] [2024-06-27 22:07:08,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502231017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:08,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:08,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:08,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089116814] [2024-06-27 22:07:08,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:08,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:08,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:08,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:08,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:08,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:07:08,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 250 transitions, 3175 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 22:07:08,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:08,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:07:08,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:10,050 INFO L124 PetriNetUnfolderBase]: 6391/9907 cut-off events. [2024-06-27 22:07:10,050 INFO L125 PetriNetUnfolderBase]: For 122764/122764 co-relation queries the response was YES. [2024-06-27 22:07:10,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51818 conditions, 9907 events. 6391/9907 cut-off events. For 122764/122764 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 60605 event pairs, 2117 based on Foata normal form. 2/9764 useless extension candidates. Maximal degree in co-relation 51755. Up to 8854 conditions per place. [2024-06-27 22:07:10,139 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 249 selfloop transitions, 34 changer transitions 0/293 dead transitions. [2024-06-27 22:07:10,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 293 transitions, 3944 flow [2024-06-27 22:07:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 22:07:10,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 22:07:10,140 INFO L175 Difference]: Start difference. First operand has 141 places, 250 transitions, 3175 flow. Second operand 8 states and 192 transitions. [2024-06-27 22:07:10,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 293 transitions, 3944 flow [2024-06-27 22:07:10,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 293 transitions, 3858 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:10,332 INFO L231 Difference]: Finished difference. Result has 145 places, 253 transitions, 3240 flow [2024-06-27 22:07:10,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3101, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3240, PETRI_PLACES=145, PETRI_TRANSITIONS=253} [2024-06-27 22:07:10,333 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 90 predicate places. [2024-06-27 22:07:10,333 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 253 transitions, 3240 flow [2024-06-27 22:07:10,333 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 22:07:10,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:10,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:10,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:07:10,333 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:10,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash 188523127, now seen corresponding path program 3 times [2024-06-27 22:07:10,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:10,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290536008] [2024-06-27 22:07:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:10,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:11,516 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 22:07:11,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:11,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290536008] [2024-06-27 22:07:11,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290536008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:11,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:11,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:07:11,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543025627] [2024-06-27 22:07:11,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:11,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:07:11,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:07:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:07:11,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:11,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 253 transitions, 3240 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:11,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:11,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:11,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:13,215 INFO L124 PetriNetUnfolderBase]: 6183/9591 cut-off events. [2024-06-27 22:07:13,215 INFO L125 PetriNetUnfolderBase]: For 130857/130863 co-relation queries the response was YES. [2024-06-27 22:07:13,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51274 conditions, 9591 events. 6183/9591 cut-off events. For 130857/130863 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 58845 event pairs, 2039 based on Foata normal form. 7/9377 useless extension candidates. Maximal degree in co-relation 51209. Up to 8563 conditions per place. [2024-06-27 22:07:13,283 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 238 selfloop transitions, 32 changer transitions 0/286 dead transitions. [2024-06-27 22:07:13,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 286 transitions, 3924 flow [2024-06-27 22:07:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:07:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:07:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 22:07:13,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014577259475219 [2024-06-27 22:07:13,284 INFO L175 Difference]: Start difference. First operand has 145 places, 253 transitions, 3240 flow. Second operand 7 states and 172 transitions. [2024-06-27 22:07:13,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 286 transitions, 3924 flow [2024-06-27 22:07:13,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 286 transitions, 3796 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:13,455 INFO L231 Difference]: Finished difference. Result has 147 places, 256 transitions, 3243 flow [2024-06-27 22:07:13,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3243, PETRI_PLACES=147, PETRI_TRANSITIONS=256} [2024-06-27 22:07:13,455 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 92 predicate places. [2024-06-27 22:07:13,455 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 256 transitions, 3243 flow [2024-06-27 22:07:13,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:13,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:13,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:13,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:07:13,456 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:13,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1930285154, now seen corresponding path program 3 times [2024-06-27 22:07:13,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:13,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722596255] [2024-06-27 22:07:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:15,614 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 22:07:15,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:15,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722596255] [2024-06-27 22:07:15,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722596255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:15,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:15,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:07:15,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469588129] [2024-06-27 22:07:15,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:15,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:07:15,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:15,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:07:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:07:15,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 22:07:15,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 256 transitions, 3243 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 22:07:15,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:15,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 22:07:15,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:17,040 INFO L124 PetriNetUnfolderBase]: 5436/8568 cut-off events. [2024-06-27 22:07:17,040 INFO L125 PetriNetUnfolderBase]: For 130968/131057 co-relation queries the response was YES. [2024-06-27 22:07:17,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46499 conditions, 8568 events. 5436/8568 cut-off events. For 130968/131057 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 53782 event pairs, 1901 based on Foata normal form. 37/8352 useless extension candidates. Maximal degree in co-relation 46433. Up to 7057 conditions per place. [2024-06-27 22:07:17,122 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 184 selfloop transitions, 78 changer transitions 0/301 dead transitions. [2024-06-27 22:07:17,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 301 transitions, 4094 flow [2024-06-27 22:07:17,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:07:17,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:07:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 22:07:17,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597667638483965 [2024-06-27 22:07:17,123 INFO L175 Difference]: Start difference. First operand has 147 places, 256 transitions, 3243 flow. Second operand 7 states and 192 transitions. [2024-06-27 22:07:17,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 301 transitions, 4094 flow [2024-06-27 22:07:17,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 301 transitions, 3982 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:17,291 INFO L231 Difference]: Finished difference. Result has 149 places, 262 transitions, 3381 flow [2024-06-27 22:07:17,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3131, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3381, PETRI_PLACES=149, PETRI_TRANSITIONS=262} [2024-06-27 22:07:17,292 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 94 predicate places. [2024-06-27 22:07:17,292 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 262 transitions, 3381 flow [2024-06-27 22:07:17,292 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 22:07:17,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:17,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:17,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:07:17,293 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:17,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:17,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1958080994, now seen corresponding path program 4 times [2024-06-27 22:07:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:17,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345994207] [2024-06-27 22:07:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:17,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:19,322 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 22:07:19,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:19,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345994207] [2024-06-27 22:07:19,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345994207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:19,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:19,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:07:19,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091010223] [2024-06-27 22:07:19,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:19,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:07:19,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:19,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:07:19,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:07:19,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:07:19,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 262 transitions, 3381 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 22:07:19,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:19,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:07:19,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:21,181 INFO L124 PetriNetUnfolderBase]: 5987/9790 cut-off events. [2024-06-27 22:07:21,182 INFO L125 PetriNetUnfolderBase]: For 148779/148809 co-relation queries the response was YES. [2024-06-27 22:07:21,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52251 conditions, 9790 events. 5987/9790 cut-off events. For 148779/148809 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 64500 event pairs, 1827 based on Foata normal form. 14/9438 useless extension candidates. Maximal degree in co-relation 52184. Up to 7929 conditions per place. [2024-06-27 22:07:21,285 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 198 selfloop transitions, 71 changer transitions 0/306 dead transitions. [2024-06-27 22:07:21,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 306 transitions, 4162 flow [2024-06-27 22:07:21,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:07:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:07:21,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 22:07:21,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-06-27 22:07:21,287 INFO L175 Difference]: Start difference. First operand has 149 places, 262 transitions, 3381 flow. Second operand 7 states and 184 transitions. [2024-06-27 22:07:21,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 306 transitions, 4162 flow [2024-06-27 22:07:21,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 306 transitions, 4066 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:21,477 INFO L231 Difference]: Finished difference. Result has 155 places, 268 transitions, 3612 flow [2024-06-27 22:07:21,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3286, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3612, PETRI_PLACES=155, PETRI_TRANSITIONS=268} [2024-06-27 22:07:21,478 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 100 predicate places. [2024-06-27 22:07:21,478 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 268 transitions, 3612 flow [2024-06-27 22:07:21,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 22:07:21,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:21,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:21,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:07:21,479 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:21,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash -365888045, now seen corresponding path program 4 times [2024-06-27 22:07:21,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:21,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460668012] [2024-06-27 22:07:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:21,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:23,380 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 22:07:23,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:23,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460668012] [2024-06-27 22:07:23,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460668012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:23,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:23,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:07:23,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655693806] [2024-06-27 22:07:23,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:23,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:07:23,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:07:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:07:23,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:23,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 268 transitions, 3612 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:23,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:23,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:23,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:25,593 INFO L124 PetriNetUnfolderBase]: 6345/10076 cut-off events. [2024-06-27 22:07:25,593 INFO L125 PetriNetUnfolderBase]: For 156579/156595 co-relation queries the response was YES. [2024-06-27 22:07:25,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56170 conditions, 10076 events. 6345/10076 cut-off events. For 156579/156595 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 64258 event pairs, 1992 based on Foata normal form. 9/9800 useless extension candidates. Maximal degree in co-relation 56099. Up to 8325 conditions per place. [2024-06-27 22:07:25,693 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 186 selfloop transitions, 139 changer transitions 0/341 dead transitions. [2024-06-27 22:07:25,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 341 transitions, 5058 flow [2024-06-27 22:07:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 22:07:25,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 22:07:25,695 INFO L175 Difference]: Start difference. First operand has 155 places, 268 transitions, 3612 flow. Second operand 8 states and 208 transitions. [2024-06-27 22:07:25,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 341 transitions, 5058 flow [2024-06-27 22:07:25,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 341 transitions, 4869 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:25,941 INFO L231 Difference]: Finished difference. Result has 160 places, 301 transitions, 4360 flow [2024-06-27 22:07:25,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3447, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4360, PETRI_PLACES=160, PETRI_TRANSITIONS=301} [2024-06-27 22:07:25,942 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 105 predicate places. [2024-06-27 22:07:25,942 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 301 transitions, 4360 flow [2024-06-27 22:07:25,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:25,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:25,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:25,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:07:25,943 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:25,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:25,943 INFO L85 PathProgramCache]: Analyzing trace with hash -366632045, now seen corresponding path program 5 times [2024-06-27 22:07:25,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:25,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356868756] [2024-06-27 22:07:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:25,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:27,778 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 22:07:27,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:27,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356868756] [2024-06-27 22:07:27,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356868756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:27,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:27,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:07:27,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088127151] [2024-06-27 22:07:27,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:27,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:07:27,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:27,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:07:27,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:07:27,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:27,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 301 transitions, 4360 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:27,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:27,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:27,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:29,792 INFO L124 PetriNetUnfolderBase]: 6410/10166 cut-off events. [2024-06-27 22:07:29,793 INFO L125 PetriNetUnfolderBase]: For 165921/165935 co-relation queries the response was YES. [2024-06-27 22:07:29,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58046 conditions, 10166 events. 6410/10166 cut-off events. For 165921/165935 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 64722 event pairs, 1999 based on Foata normal form. 7/9887 useless extension candidates. Maximal degree in co-relation 57972. Up to 8385 conditions per place. [2024-06-27 22:07:29,895 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 189 selfloop transitions, 151 changer transitions 0/356 dead transitions. [2024-06-27 22:07:29,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 356 transitions, 5517 flow [2024-06-27 22:07:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 22:07:29,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-27 22:07:29,896 INFO L175 Difference]: Start difference. First operand has 160 places, 301 transitions, 4360 flow. Second operand 8 states and 204 transitions. [2024-06-27 22:07:29,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 356 transitions, 5517 flow [2024-06-27 22:07:30,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 356 transitions, 5327 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:30,165 INFO L231 Difference]: Finished difference. Result has 167 places, 322 transitions, 4959 flow [2024-06-27 22:07:30,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4959, PETRI_PLACES=167, PETRI_TRANSITIONS=322} [2024-06-27 22:07:30,166 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 112 predicate places. [2024-06-27 22:07:30,166 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 322 transitions, 4959 flow [2024-06-27 22:07:30,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:30,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:30,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:30,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:07:30,166 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:30,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:30,167 INFO L85 PathProgramCache]: Analyzing trace with hash -366631828, now seen corresponding path program 5 times [2024-06-27 22:07:30,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:30,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223265470] [2024-06-27 22:07:30,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:30,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:32,347 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 22:07:32,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:32,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223265470] [2024-06-27 22:07:32,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223265470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:32,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:32,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:32,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101342367] [2024-06-27 22:07:32,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:32,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:32,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:32,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:32,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:32,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:32,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 322 transitions, 4959 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:32,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:32,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:32,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:34,674 INFO L124 PetriNetUnfolderBase]: 6619/10468 cut-off events. [2024-06-27 22:07:34,679 INFO L125 PetriNetUnfolderBase]: For 182467/182489 co-relation queries the response was YES. [2024-06-27 22:07:34,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60822 conditions, 10468 events. 6619/10468 cut-off events. For 182467/182489 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 66589 event pairs, 2010 based on Foata normal form. 17/10196 useless extension candidates. Maximal degree in co-relation 60745. Up to 8244 conditions per place. [2024-06-27 22:07:34,771 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 226 selfloop transitions, 166 changer transitions 0/408 dead transitions. [2024-06-27 22:07:34,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 408 transitions, 6557 flow [2024-06-27 22:07:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 22:07:34,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2024-06-27 22:07:34,773 INFO L175 Difference]: Start difference. First operand has 167 places, 322 transitions, 4959 flow. Second operand 9 states and 236 transitions. [2024-06-27 22:07:34,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 408 transitions, 6557 flow [2024-06-27 22:07:34,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 408 transitions, 6363 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:34,972 INFO L231 Difference]: Finished difference. Result has 173 places, 354 transitions, 5589 flow [2024-06-27 22:07:34,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4765, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5589, PETRI_PLACES=173, PETRI_TRANSITIONS=354} [2024-06-27 22:07:34,973 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 118 predicate places. [2024-06-27 22:07:34,973 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 354 transitions, 5589 flow [2024-06-27 22:07:34,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:34,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:34,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:34,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:07:34,974 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:34,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:34,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1813506281, now seen corresponding path program 1 times [2024-06-27 22:07:34,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:34,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666536017] [2024-06-27 22:07:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:34,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:36,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:36,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666536017] [2024-06-27 22:07:36,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666536017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:36,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:36,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:36,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099198913] [2024-06-27 22:07:36,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:36,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:36,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:36,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:36,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:37,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:07:37,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 354 transitions, 5589 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 22:07:37,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:37,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:07:37,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:39,102 INFO L124 PetriNetUnfolderBase]: 6829/10530 cut-off events. [2024-06-27 22:07:39,103 INFO L125 PetriNetUnfolderBase]: For 199239/199239 co-relation queries the response was YES. [2024-06-27 22:07:39,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64440 conditions, 10530 events. 6829/10530 cut-off events. For 199239/199239 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 64363 event pairs, 2043 based on Foata normal form. 2/10388 useless extension candidates. Maximal degree in co-relation 64361. Up to 9494 conditions per place. [2024-06-27 22:07:39,212 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 365 selfloop transitions, 34 changer transitions 0/409 dead transitions. [2024-06-27 22:07:39,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 409 transitions, 6739 flow [2024-06-27 22:07:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:39,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 22:07:39,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 22:07:39,214 INFO L175 Difference]: Start difference. First operand has 173 places, 354 transitions, 5589 flow. Second operand 8 states and 192 transitions. [2024-06-27 22:07:39,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 409 transitions, 6739 flow [2024-06-27 22:07:39,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 409 transitions, 6629 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:39,592 INFO L231 Difference]: Finished difference. Result has 180 places, 370 transitions, 5806 flow [2024-06-27 22:07:39,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5482, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5806, PETRI_PLACES=180, PETRI_TRANSITIONS=370} [2024-06-27 22:07:39,592 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 125 predicate places. [2024-06-27 22:07:39,592 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 370 transitions, 5806 flow [2024-06-27 22:07:39,593 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 22:07:39,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:39,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:39,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:07:39,593 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:39,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:39,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1646586010, now seen corresponding path program 1 times [2024-06-27 22:07:39,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:39,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342237298] [2024-06-27 22:07:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:39,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:41,539 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 22:07:41,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:41,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342237298] [2024-06-27 22:07:41,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342237298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:41,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:41,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:07:41,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675167947] [2024-06-27 22:07:41,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:41,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:07:41,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:41,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:07:41,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:07:41,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:07:41,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 370 transitions, 5806 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 22:07:41,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:41,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:07:41,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:43,607 INFO L124 PetriNetUnfolderBase]: 7134/10819 cut-off events. [2024-06-27 22:07:43,607 INFO L125 PetriNetUnfolderBase]: For 214908/214947 co-relation queries the response was YES. [2024-06-27 22:07:43,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67374 conditions, 10819 events. 7134/10819 cut-off events. For 214908/214947 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 64833 event pairs, 2149 based on Foata normal form. 26/10679 useless extension candidates. Maximal degree in co-relation 67289. Up to 9952 conditions per place. [2024-06-27 22:07:43,720 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 334 selfloop transitions, 16 changer transitions 0/388 dead transitions. [2024-06-27 22:07:43,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 388 transitions, 6614 flow [2024-06-27 22:07:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:07:43,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:07:43,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-27 22:07:43,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-27 22:07:43,729 INFO L175 Difference]: Start difference. First operand has 180 places, 370 transitions, 5806 flow. Second operand 6 states and 134 transitions. [2024-06-27 22:07:43,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 388 transitions, 6614 flow [2024-06-27 22:07:44,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 388 transitions, 6498 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:44,112 INFO L231 Difference]: Finished difference. Result has 183 places, 374 transitions, 5791 flow [2024-06-27 22:07:44,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5692, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5791, PETRI_PLACES=183, PETRI_TRANSITIONS=374} [2024-06-27 22:07:44,117 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 128 predicate places. [2024-06-27 22:07:44,117 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 374 transitions, 5791 flow [2024-06-27 22:07:44,117 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 22:07:44,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:44,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:44,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:07:44,118 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:44,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1259029503, now seen corresponding path program 1 times [2024-06-27 22:07:44,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:44,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264329462] [2024-06-27 22:07:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:44,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:46,253 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 22:07:46,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264329462] [2024-06-27 22:07:46,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264329462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:46,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:46,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:46,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097091131] [2024-06-27 22:07:46,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:46,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:46,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:46,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:46,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:46,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:07:46,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 374 transitions, 5791 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 22:07:46,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:46,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:07:46,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:48,472 INFO L124 PetriNetUnfolderBase]: 6563/10315 cut-off events. [2024-06-27 22:07:48,473 INFO L125 PetriNetUnfolderBase]: For 235443/235497 co-relation queries the response was YES. [2024-06-27 22:07:48,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66603 conditions, 10315 events. 6563/10315 cut-off events. For 235443/235497 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 65571 event pairs, 1810 based on Foata normal form. 13/10079 useless extension candidates. Maximal degree in co-relation 66516. Up to 8590 conditions per place. [2024-06-27 22:07:48,589 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 326 selfloop transitions, 61 changer transitions 0/434 dead transitions. [2024-06-27 22:07:48,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 434 transitions, 7053 flow [2024-06-27 22:07:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 22:07:48,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-27 22:07:48,590 INFO L175 Difference]: Start difference. First operand has 183 places, 374 transitions, 5791 flow. Second operand 8 states and 212 transitions. [2024-06-27 22:07:48,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 434 transitions, 7053 flow [2024-06-27 22:07:48,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 434 transitions, 6999 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:48,930 INFO L231 Difference]: Finished difference. Result has 190 places, 387 transitions, 6059 flow [2024-06-27 22:07:48,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5737, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6059, PETRI_PLACES=190, PETRI_TRANSITIONS=387} [2024-06-27 22:07:48,931 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 135 predicate places. [2024-06-27 22:07:48,931 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 387 transitions, 6059 flow [2024-06-27 22:07:48,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 22:07:48,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:48,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:48,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:07:48,931 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:48,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:48,932 INFO L85 PathProgramCache]: Analyzing trace with hash -880540993, now seen corresponding path program 2 times [2024-06-27 22:07:48,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:48,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574757367] [2024-06-27 22:07:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:48,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:51,157 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 22:07:51,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:51,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574757367] [2024-06-27 22:07:51,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574757367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:51,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:51,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:51,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432251545] [2024-06-27 22:07:51,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:51,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:51,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:07:51,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 387 transitions, 6059 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 22:07:51,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:51,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:07:51,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:53,490 INFO L124 PetriNetUnfolderBase]: 6573/10399 cut-off events. [2024-06-27 22:07:53,490 INFO L125 PetriNetUnfolderBase]: For 248966/248996 co-relation queries the response was YES. [2024-06-27 22:07:53,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68333 conditions, 10399 events. 6573/10399 cut-off events. For 248966/248996 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 66569 event pairs, 1807 based on Foata normal form. 13/10210 useless extension candidates. Maximal degree in co-relation 68243. Up to 8703 conditions per place. [2024-06-27 22:07:53,580 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 310 selfloop transitions, 79 changer transitions 0/436 dead transitions. [2024-06-27 22:07:53,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 436 transitions, 7173 flow [2024-06-27 22:07:53,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 22:07:53,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 22:07:53,582 INFO L175 Difference]: Start difference. First operand has 190 places, 387 transitions, 6059 flow. Second operand 8 states and 210 transitions. [2024-06-27 22:07:53,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 436 transitions, 7173 flow [2024-06-27 22:07:53,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 436 transitions, 7100 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-27 22:07:53,888 INFO L231 Difference]: Finished difference. Result has 196 places, 391 transitions, 6252 flow [2024-06-27 22:07:53,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6002, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6252, PETRI_PLACES=196, PETRI_TRANSITIONS=391} [2024-06-27 22:07:53,890 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 141 predicate places. [2024-06-27 22:07:53,890 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 391 transitions, 6252 flow [2024-06-27 22:07:53,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 22:07:53,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:53,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:53,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:07:53,890 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:53,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:53,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1749084237, now seen corresponding path program 1 times [2024-06-27 22:07:53,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:53,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059139778] [2024-06-27 22:07:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:53,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:56,040 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 22:07:56,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:56,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059139778] [2024-06-27 22:07:56,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059139778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:56,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:56,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:56,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944056146] [2024-06-27 22:07:56,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:56,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:56,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:56,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:56,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:56,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:07:56,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 391 transitions, 6252 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 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 22:07:56,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:56,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:07:56,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:58,209 INFO L124 PetriNetUnfolderBase]: 6919/10793 cut-off events. [2024-06-27 22:07:58,209 INFO L125 PetriNetUnfolderBase]: For 268099/268105 co-relation queries the response was YES. [2024-06-27 22:07:58,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72137 conditions, 10793 events. 6919/10793 cut-off events. For 268099/268105 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 67773 event pairs, 1952 based on Foata normal form. 3/10601 useless extension candidates. Maximal degree in co-relation 72045. Up to 9012 conditions per place. [2024-06-27 22:07:58,336 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 293 selfloop transitions, 129 changer transitions 0/439 dead transitions. [2024-06-27 22:07:58,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 439 transitions, 7518 flow [2024-06-27 22:07:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:58,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 22:07:58,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-06-27 22:07:58,337 INFO L175 Difference]: Start difference. First operand has 196 places, 391 transitions, 6252 flow. Second operand 8 states and 206 transitions. [2024-06-27 22:07:58,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 439 transitions, 7518 flow [2024-06-27 22:07:58,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 439 transitions, 7324 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:58,704 INFO L231 Difference]: Finished difference. Result has 199 places, 398 transitions, 6481 flow [2024-06-27 22:07:58,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6060, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6481, PETRI_PLACES=199, PETRI_TRANSITIONS=398} [2024-06-27 22:07:58,705 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 144 predicate places. [2024-06-27 22:07:58,705 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 398 transitions, 6481 flow [2024-06-27 22:07:58,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 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 22:07:58,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:58,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:58,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:07:58,706 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:58,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1746283077, now seen corresponding path program 2 times [2024-06-27 22:07:58,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:58,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644043110] [2024-06-27 22:07:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:58,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:00,521 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 22:08:00,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:00,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644043110] [2024-06-27 22:08:00,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644043110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:00,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:00,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:00,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315590041] [2024-06-27 22:08:00,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:00,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:00,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:00,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:00,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:00,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:08:00,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 398 transitions, 6481 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 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 22:08:00,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:00,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:08:00,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:02,920 INFO L124 PetriNetUnfolderBase]: 7015/11385 cut-off events. [2024-06-27 22:08:02,920 INFO L125 PetriNetUnfolderBase]: For 290293/290301 co-relation queries the response was YES. [2024-06-27 22:08:02,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75075 conditions, 11385 events. 7015/11385 cut-off events. For 290293/290301 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 75388 event pairs, 1873 based on Foata normal form. 4/11078 useless extension candidates. Maximal degree in co-relation 74981. Up to 9210 conditions per place. [2024-06-27 22:08:03,026 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 290 selfloop transitions, 149 changer transitions 0/456 dead transitions. [2024-06-27 22:08:03,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 456 transitions, 7921 flow [2024-06-27 22:08:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 22:08:03,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943310657596372 [2024-06-27 22:08:03,028 INFO L175 Difference]: Start difference. First operand has 199 places, 398 transitions, 6481 flow. Second operand 9 states and 218 transitions. [2024-06-27 22:08:03,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 456 transitions, 7921 flow [2024-06-27 22:08:03,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 456 transitions, 7741 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 22:08:03,416 INFO L231 Difference]: Finished difference. Result has 207 places, 413 transitions, 7071 flow [2024-06-27 22:08:03,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6313, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7071, PETRI_PLACES=207, PETRI_TRANSITIONS=413} [2024-06-27 22:08:03,417 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 152 predicate places. [2024-06-27 22:08:03,417 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 413 transitions, 7071 flow [2024-06-27 22:08:03,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 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 22:08:03,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:03,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:03,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:08:03,417 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:03,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1261886463, now seen corresponding path program 3 times [2024-06-27 22:08:03,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:03,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135480834] [2024-06-27 22:08:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:03,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:05,481 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 22:08:05,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:05,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135480834] [2024-06-27 22:08:05,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135480834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:05,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:05,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:05,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007907092] [2024-06-27 22:08:05,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:05,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:05,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:05,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:05,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:05,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:08:05,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 413 transitions, 7071 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 22:08:05,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:05,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:08:05,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:07,843 INFO L124 PetriNetUnfolderBase]: 6732/11088 cut-off events. [2024-06-27 22:08:07,843 INFO L125 PetriNetUnfolderBase]: For 306631/306663 co-relation queries the response was YES. [2024-06-27 22:08:07,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75208 conditions, 11088 events. 6732/11088 cut-off events. For 306631/306663 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 74906 event pairs, 1777 based on Foata normal form. 14/10789 useless extension candidates. Maximal degree in co-relation 75110. Up to 8935 conditions per place. [2024-06-27 22:08:07,988 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 328 selfloop transitions, 82 changer transitions 0/463 dead transitions. [2024-06-27 22:08:07,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 463 transitions, 8229 flow [2024-06-27 22:08:07,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:08:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:08:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:08:07,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331632653061225 [2024-06-27 22:08:07,990 INFO L175 Difference]: Start difference. First operand has 207 places, 413 transitions, 7071 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:08:07,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 463 transitions, 8229 flow [2024-06-27 22:08:08,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 463 transitions, 8028 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-27 22:08:08,546 INFO L231 Difference]: Finished difference. Result has 212 places, 419 transitions, 7207 flow [2024-06-27 22:08:08,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6870, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7207, PETRI_PLACES=212, PETRI_TRANSITIONS=419} [2024-06-27 22:08:08,547 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 157 predicate places. [2024-06-27 22:08:08,547 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 419 transitions, 7207 flow [2024-06-27 22:08:08,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 22:08:08,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:08,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:08,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:08:08,548 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:08,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:08,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1372709107, now seen corresponding path program 3 times [2024-06-27 22:08:08,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:08,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150690462] [2024-06-27 22:08:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:08,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:10,570 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 22:08:10,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:10,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150690462] [2024-06-27 22:08:10,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150690462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:10,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:10,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:10,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095950013] [2024-06-27 22:08:10,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:10,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:10,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:10,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:08:10,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 419 transitions, 7207 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 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 22:08:10,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:10,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:08:10,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:13,011 INFO L124 PetriNetUnfolderBase]: 7007/10950 cut-off events. [2024-06-27 22:08:13,012 INFO L125 PetriNetUnfolderBase]: For 323887/323895 co-relation queries the response was YES. [2024-06-27 22:08:13,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78185 conditions, 10950 events. 7007/10950 cut-off events. For 323887/323895 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 69137 event pairs, 1952 based on Foata normal form. 4/10749 useless extension candidates. Maximal degree in co-relation 78084. Up to 9284 conditions per place. [2024-06-27 22:08:13,140 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 306 selfloop transitions, 136 changer transitions 0/459 dead transitions. [2024-06-27 22:08:13,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 459 transitions, 8336 flow [2024-06-27 22:08:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:08:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:08:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 22:08:13,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 22:08:13,141 INFO L175 Difference]: Start difference. First operand has 212 places, 419 transitions, 7207 flow. Second operand 8 states and 203 transitions. [2024-06-27 22:08:13,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 459 transitions, 8336 flow [2024-06-27 22:08:13,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 459 transitions, 8193 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 22:08:13,652 INFO L231 Difference]: Finished difference. Result has 216 places, 422 transitions, 7407 flow [2024-06-27 22:08:13,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7064, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7407, PETRI_PLACES=216, PETRI_TRANSITIONS=422} [2024-06-27 22:08:13,653 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 161 predicate places. [2024-06-27 22:08:13,654 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 422 transitions, 7407 flow [2024-06-27 22:08:13,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 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 22:08:13,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:13,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:13,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:08:13,654 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:13,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:13,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1630996557, now seen corresponding path program 4 times [2024-06-27 22:08:13,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:13,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064214266] [2024-06-27 22:08:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:13,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:15,536 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 22:08:15,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:15,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064214266] [2024-06-27 22:08:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064214266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:15,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:15,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:15,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143463582] [2024-06-27 22:08:15,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:15,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:15,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:15,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:15,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:15,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:08:15,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 422 transitions, 7407 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 22:08:15,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:15,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:08:15,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:17,944 INFO L124 PetriNetUnfolderBase]: 7272/11870 cut-off events. [2024-06-27 22:08:17,944 INFO L125 PetriNetUnfolderBase]: For 332902/332908 co-relation queries the response was YES. [2024-06-27 22:08:18,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80932 conditions, 11870 events. 7272/11870 cut-off events. For 332902/332908 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 78858 event pairs, 1954 based on Foata normal form. 3/11518 useless extension candidates. Maximal degree in co-relation 80830. Up to 9527 conditions per place. [2024-06-27 22:08:18,095 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 299 selfloop transitions, 174 changer transitions 0/483 dead transitions. [2024-06-27 22:08:18,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 483 transitions, 8993 flow [2024-06-27 22:08:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:18,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 22:08:18,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 22:08:18,096 INFO L175 Difference]: Start difference. First operand has 216 places, 422 transitions, 7407 flow. Second operand 9 states and 216 transitions. [2024-06-27 22:08:18,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 483 transitions, 8993 flow [2024-06-27 22:08:18,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 483 transitions, 8708 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 22:08:18,662 INFO L231 Difference]: Finished difference. Result has 222 places, 439 transitions, 7935 flow [2024-06-27 22:08:18,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7122, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7935, PETRI_PLACES=222, PETRI_TRANSITIONS=439} [2024-06-27 22:08:18,662 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 167 predicate places. [2024-06-27 22:08:18,663 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 439 transitions, 7935 flow [2024-06-27 22:08:18,663 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 22:08:18,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:18,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:18,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:08:18,663 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:18,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:18,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1377182407, now seen corresponding path program 5 times [2024-06-27 22:08:18,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:18,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967631631] [2024-06-27 22:08:18,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:18,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:20,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967631631] [2024-06-27 22:08:20,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967631631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:20,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:20,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:20,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355335814] [2024-06-27 22:08:20,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:20,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:20,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:20,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:20,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:20,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:08:20,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 439 transitions, 7935 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:08:20,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:20,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:08:20,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:23,232 INFO L124 PetriNetUnfolderBase]: 7147/11959 cut-off events. [2024-06-27 22:08:23,232 INFO L125 PetriNetUnfolderBase]: For 364800/364806 co-relation queries the response was YES. [2024-06-27 22:08:23,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83300 conditions, 11959 events. 7147/11959 cut-off events. For 364800/364806 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 82564 event pairs, 2089 based on Foata normal form. 3/11551 useless extension candidates. Maximal degree in co-relation 83195. Up to 9446 conditions per place. [2024-06-27 22:08:23,384 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 330 selfloop transitions, 143 changer transitions 0/490 dead transitions. [2024-06-27 22:08:23,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 490 transitions, 9334 flow [2024-06-27 22:08:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:23,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 22:08:23,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943310657596372 [2024-06-27 22:08:23,385 INFO L175 Difference]: Start difference. First operand has 222 places, 439 transitions, 7935 flow. Second operand 9 states and 218 transitions. [2024-06-27 22:08:23,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 490 transitions, 9334 flow [2024-06-27 22:08:24,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 490 transitions, 9184 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-27 22:08:24,102 INFO L231 Difference]: Finished difference. Result has 229 places, 450 transitions, 8427 flow [2024-06-27 22:08:24,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7811, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8427, PETRI_PLACES=229, PETRI_TRANSITIONS=450} [2024-06-27 22:08:24,102 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 174 predicate places. [2024-06-27 22:08:24,102 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 450 transitions, 8427 flow [2024-06-27 22:08:24,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:08:24,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:24,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:24,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:08:24,103 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:24,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:24,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1377182593, now seen corresponding path program 1 times [2024-06-27 22:08:24,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:24,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811801604] [2024-06-27 22:08:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:24,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:25,587 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 22:08:25,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:25,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811801604] [2024-06-27 22:08:25,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811801604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:25,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:25,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:25,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139922700] [2024-06-27 22:08:25,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:25,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:25,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:25,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:25,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:08:25,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 450 transitions, 8427 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 22:08:25,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:25,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:08:25,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:28,015 INFO L124 PetriNetUnfolderBase]: 7373/12263 cut-off events. [2024-06-27 22:08:28,016 INFO L125 PetriNetUnfolderBase]: For 370519/370525 co-relation queries the response was YES. [2024-06-27 22:08:28,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85376 conditions, 12263 events. 7373/12263 cut-off events. For 370519/370525 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 83690 event pairs, 2188 based on Foata normal form. 4/11881 useless extension candidates. Maximal degree in co-relation 85268. Up to 9398 conditions per place. [2024-06-27 22:08:28,182 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 349 selfloop transitions, 163 changer transitions 0/522 dead transitions. [2024-06-27 22:08:28,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 522 transitions, 10124 flow [2024-06-27 22:08:28,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:08:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:08:28,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 22:08:28,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 22:08:28,184 INFO L175 Difference]: Start difference. First operand has 229 places, 450 transitions, 8427 flow. Second operand 8 states and 208 transitions. [2024-06-27 22:08:28,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 522 transitions, 10124 flow [2024-06-27 22:08:28,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 522 transitions, 10028 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-27 22:08:28,893 INFO L231 Difference]: Finished difference. Result has 234 places, 457 transitions, 8812 flow [2024-06-27 22:08:28,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8331, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8812, PETRI_PLACES=234, PETRI_TRANSITIONS=457} [2024-06-27 22:08:28,894 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 179 predicate places. [2024-06-27 22:08:28,894 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 457 transitions, 8812 flow [2024-06-27 22:08:28,895 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 22:08:28,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:28,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:28,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:08:28,895 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:28,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1377355387, now seen corresponding path program 6 times [2024-06-27 22:08:28,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:28,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778023447] [2024-06-27 22:08:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:30,764 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 22:08:30,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:30,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778023447] [2024-06-27 22:08:30,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778023447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:30,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:30,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:30,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485243115] [2024-06-27 22:08:30,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:30,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:30,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:30,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:30,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:30,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:08:30,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 457 transitions, 8812 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:08:30,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:30,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:08:30,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:33,443 INFO L124 PetriNetUnfolderBase]: 7208/12056 cut-off events. [2024-06-27 22:08:33,444 INFO L125 PetriNetUnfolderBase]: For 395275/395281 co-relation queries the response was YES. [2024-06-27 22:08:33,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86249 conditions, 12056 events. 7208/12056 cut-off events. For 395275/395281 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 83331 event pairs, 2090 based on Foata normal form. 3/11644 useless extension candidates. Maximal degree in co-relation 86139. Up to 9522 conditions per place. [2024-06-27 22:08:33,592 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 351 selfloop transitions, 133 changer transitions 0/502 dead transitions. [2024-06-27 22:08:33,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 502 transitions, 10121 flow [2024-06-27 22:08:33,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:33,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 22:08:33,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 22:08:33,601 INFO L175 Difference]: Start difference. First operand has 234 places, 457 transitions, 8812 flow. Second operand 9 states and 216 transitions. [2024-06-27 22:08:33,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 502 transitions, 10121 flow [2024-06-27 22:08:34,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 502 transitions, 9800 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 22:08:34,346 INFO L231 Difference]: Finished difference. Result has 238 places, 463 transitions, 8929 flow [2024-06-27 22:08:34,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8491, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8929, PETRI_PLACES=238, PETRI_TRANSITIONS=463} [2024-06-27 22:08:34,346 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 183 predicate places. [2024-06-27 22:08:34,346 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 463 transitions, 8929 flow [2024-06-27 22:08:34,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:08:34,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:34,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:34,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:08:34,347 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:34,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:34,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1630812231, now seen corresponding path program 2 times [2024-06-27 22:08:34,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:34,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065384262] [2024-06-27 22:08:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:34,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065384262] [2024-06-27 22:08:35,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065384262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:35,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:35,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124391353] [2024-06-27 22:08:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:35,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:35,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:35,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:35,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:08:35,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 463 transitions, 8929 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 22:08:35,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:35,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:08:35,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:38,737 INFO L124 PetriNetUnfolderBase]: 7483/12436 cut-off events. [2024-06-27 22:08:38,737 INFO L125 PetriNetUnfolderBase]: For 404155/404161 co-relation queries the response was YES. [2024-06-27 22:08:38,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88153 conditions, 12436 events. 7483/12436 cut-off events. For 404155/404161 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 84874 event pairs, 2200 based on Foata normal form. 4/12048 useless extension candidates. Maximal degree in co-relation 88042. Up to 9521 conditions per place. [2024-06-27 22:08:38,913 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 356 selfloop transitions, 170 changer transitions 0/536 dead transitions. [2024-06-27 22:08:38,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 536 transitions, 10868 flow [2024-06-27 22:08:38,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:08:38,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:08:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 22:08:38,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-06-27 22:08:38,915 INFO L175 Difference]: Start difference. First operand has 238 places, 463 transitions, 8929 flow. Second operand 8 states and 206 transitions. [2024-06-27 22:08:38,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 536 transitions, 10868 flow [2024-06-27 22:08:39,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 536 transitions, 10599 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 22:08:39,767 INFO L231 Difference]: Finished difference. Result has 241 places, 477 transitions, 9290 flow [2024-06-27 22:08:39,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8660, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9290, PETRI_PLACES=241, PETRI_TRANSITIONS=477} [2024-06-27 22:08:39,991 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 186 predicate places. [2024-06-27 22:08:39,991 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 477 transitions, 9290 flow [2024-06-27 22:08:39,991 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 22:08:39,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:39,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:39,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:08:39,991 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:39,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1630811983, now seen corresponding path program 1 times [2024-06-27 22:08:39,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:39,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024766668] [2024-06-27 22:08:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:39,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:41,523 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 22:08:41,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:41,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024766668] [2024-06-27 22:08:41,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024766668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:41,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:41,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:41,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830168303] [2024-06-27 22:08:41,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:41,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:41,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:41,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:41,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:08:41,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 477 transitions, 9290 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 22:08:41,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:41,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:08:41,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:44,332 INFO L124 PetriNetUnfolderBase]: 7722/12790 cut-off events. [2024-06-27 22:08:44,333 INFO L125 PetriNetUnfolderBase]: For 438094/438100 co-relation queries the response was YES. [2024-06-27 22:08:44,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91538 conditions, 12790 events. 7722/12790 cut-off events. For 438094/438100 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 87218 event pairs, 2146 based on Foata normal form. 11/12404 useless extension candidates. Maximal degree in co-relation 91426. Up to 9474 conditions per place. [2024-06-27 22:08:44,495 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 377 selfloop transitions, 175 changer transitions 0/562 dead transitions. [2024-06-27 22:08:44,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 562 transitions, 11223 flow [2024-06-27 22:08:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 22:08:44,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2024-06-27 22:08:44,496 INFO L175 Difference]: Start difference. First operand has 241 places, 477 transitions, 9290 flow. Second operand 9 states and 230 transitions. [2024-06-27 22:08:44,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 562 transitions, 11223 flow [2024-06-27 22:08:45,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 562 transitions, 10928 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 22:08:45,381 INFO L231 Difference]: Finished difference. Result has 246 places, 493 transitions, 9648 flow [2024-06-27 22:08:45,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8995, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9648, PETRI_PLACES=246, PETRI_TRANSITIONS=493} [2024-06-27 22:08:45,382 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 191 predicate places. [2024-06-27 22:08:45,382 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 493 transitions, 9648 flow [2024-06-27 22:08:45,382 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 22:08:45,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:45,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:45,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:08:45,382 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:45,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:45,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1630818741, now seen corresponding path program 3 times [2024-06-27 22:08:45,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:45,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787172573] [2024-06-27 22:08:45,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:45,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:46,891 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 22:08:46,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787172573] [2024-06-27 22:08:46,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787172573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:46,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:46,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:46,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685457565] [2024-06-27 22:08:46,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:46,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:46,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:46,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:08:46,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 493 transitions, 9648 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 22:08:46,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:46,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:08:46,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:49,715 INFO L124 PetriNetUnfolderBase]: 7714/12777 cut-off events. [2024-06-27 22:08:49,716 INFO L125 PetriNetUnfolderBase]: For 456345/456351 co-relation queries the response was YES. [2024-06-27 22:08:49,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93202 conditions, 12777 events. 7714/12777 cut-off events. For 456345/456351 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 87083 event pairs, 2139 based on Foata normal form. 4/12383 useless extension candidates. Maximal degree in co-relation 93089. Up to 9840 conditions per place. [2024-06-27 22:08:49,857 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 381 selfloop transitions, 165 changer transitions 0/556 dead transitions. [2024-06-27 22:08:49,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 556 transitions, 11282 flow [2024-06-27 22:08:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:08:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:08:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 22:08:49,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229591836734694 [2024-06-27 22:08:49,859 INFO L175 Difference]: Start difference. First operand has 246 places, 493 transitions, 9648 flow. Second operand 8 states and 205 transitions. [2024-06-27 22:08:49,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 556 transitions, 11282 flow [2024-06-27 22:08:50,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 556 transitions, 11056 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-27 22:08:50,628 INFO L231 Difference]: Finished difference. Result has 249 places, 493 transitions, 9768 flow [2024-06-27 22:08:50,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9422, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9768, PETRI_PLACES=249, PETRI_TRANSITIONS=493} [2024-06-27 22:08:50,629 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 194 predicate places. [2024-06-27 22:08:50,629 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 493 transitions, 9768 flow [2024-06-27 22:08:50,630 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 22:08:50,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:50,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:50,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:08:50,630 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:50,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:50,630 INFO L85 PathProgramCache]: Analyzing trace with hash 481170463, now seen corresponding path program 1 times [2024-06-27 22:08:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:50,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944683995] [2024-06-27 22:08:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:50,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:51,955 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 22:08:51,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:51,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944683995] [2024-06-27 22:08:51,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944683995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:51,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:51,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:08:51,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984270583] [2024-06-27 22:08:51,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:51,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:08:51,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:51,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:08:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:08:52,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:08:52,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 493 transitions, 9768 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:52,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:52,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:08:52,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:54,517 INFO L124 PetriNetUnfolderBase]: 7305/12220 cut-off events. [2024-06-27 22:08:54,517 INFO L125 PetriNetUnfolderBase]: For 460864/461574 co-relation queries the response was YES. [2024-06-27 22:08:54,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86819 conditions, 12220 events. 7305/12220 cut-off events. For 460864/461574 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 85200 event pairs, 2133 based on Foata normal form. 274/12031 useless extension candidates. Maximal degree in co-relation 86704. Up to 9666 conditions per place. [2024-06-27 22:08:54,677 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 353 selfloop transitions, 55 changer transitions 0/528 dead transitions. [2024-06-27 22:08:54,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 528 transitions, 11008 flow [2024-06-27 22:08:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:08:54,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:08:54,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 22:08:54,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 22:08:54,679 INFO L175 Difference]: Start difference. First operand has 249 places, 493 transitions, 9768 flow. Second operand 6 states and 154 transitions. [2024-06-27 22:08:54,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 528 transitions, 11008 flow [2024-06-27 22:08:55,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 528 transitions, 10641 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:08:55,432 INFO L231 Difference]: Finished difference. Result has 249 places, 503 transitions, 9689 flow [2024-06-27 22:08:55,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9401, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9689, PETRI_PLACES=249, PETRI_TRANSITIONS=503} [2024-06-27 22:08:55,433 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 194 predicate places. [2024-06-27 22:08:55,433 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 503 transitions, 9689 flow [2024-06-27 22:08:55,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:55,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:55,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:55,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:08:55,434 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:55,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash 485056291, now seen corresponding path program 4 times [2024-06-27 22:08:55,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:55,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838443667] [2024-06-27 22:08:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:55,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:58,455 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 22:08:58,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:58,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838443667] [2024-06-27 22:08:58,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838443667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:58,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:58,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:58,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196612313] [2024-06-27 22:08:58,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:58,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:58,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:58,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:58,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:58,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 22:08:58,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 503 transitions, 9689 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 22:08:58,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:58,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 22:08:58,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:01,001 INFO L124 PetriNetUnfolderBase]: 6843/11235 cut-off events. [2024-06-27 22:09:01,002 INFO L125 PetriNetUnfolderBase]: For 494501/494596 co-relation queries the response was YES. [2024-06-27 22:09:01,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87722 conditions, 11235 events. 6843/11235 cut-off events. For 494501/494596 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 76932 event pairs, 1661 based on Foata normal form. 45/10904 useless extension candidates. Maximal degree in co-relation 87604. Up to 8729 conditions per place. [2024-06-27 22:09:01,165 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 381 selfloop transitions, 91 changer transitions 0/546 dead transitions. [2024-06-27 22:09:01,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 546 transitions, 10887 flow [2024-06-27 22:09:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:09:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:09:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-27 22:09:01,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2024-06-27 22:09:01,167 INFO L175 Difference]: Start difference. First operand has 249 places, 503 transitions, 9689 flow. Second operand 8 states and 214 transitions. [2024-06-27 22:09:01,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 546 transitions, 10887 flow [2024-06-27 22:09:02,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 546 transitions, 10858 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 22:09:02,042 INFO L231 Difference]: Finished difference. Result has 256 places, 505 transitions, 9918 flow [2024-06-27 22:09:02,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9660, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9918, PETRI_PLACES=256, PETRI_TRANSITIONS=505} [2024-06-27 22:09:02,043 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 201 predicate places. [2024-06-27 22:09:02,043 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 505 transitions, 9918 flow [2024-06-27 22:09:02,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 22:09:02,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:02,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:02,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:09:02,044 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:02,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:02,044 INFO L85 PathProgramCache]: Analyzing trace with hash 119009039, now seen corresponding path program 2 times [2024-06-27 22:09:02,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:02,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657615400] [2024-06-27 22:09:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:02,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:03,510 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 22:09:03,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:03,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657615400] [2024-06-27 22:09:03,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657615400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:03,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:03,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:03,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779618506] [2024-06-27 22:09:03,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:03,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:03,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:03,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:03,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:03,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:09:03,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 505 transitions, 9918 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 22:09:03,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:03,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:09:03,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:06,687 INFO L124 PetriNetUnfolderBase]: 7991/13135 cut-off events. [2024-06-27 22:09:06,687 INFO L125 PetriNetUnfolderBase]: For 529629/529629 co-relation queries the response was YES. [2024-06-27 22:09:06,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99847 conditions, 13135 events. 7991/13135 cut-off events. For 529629/529629 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 88995 event pairs, 2205 based on Foata normal form. 5/12746 useless extension candidates. Maximal degree in co-relation 99726. Up to 10799 conditions per place. [2024-06-27 22:09:06,841 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 499 selfloop transitions, 71 changer transitions 0/583 dead transitions. [2024-06-27 22:09:06,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 583 transitions, 11881 flow [2024-06-27 22:09:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:06,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 22:09:06,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011337868480725 [2024-06-27 22:09:06,856 INFO L175 Difference]: Start difference. First operand has 256 places, 505 transitions, 9918 flow. Second operand 9 states and 221 transitions. [2024-06-27 22:09:06,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 583 transitions, 11881 flow [2024-06-27 22:09:07,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 583 transitions, 11694 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:07,654 INFO L231 Difference]: Finished difference. Result has 260 places, 515 transitions, 10139 flow [2024-06-27 22:09:07,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9731, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10139, PETRI_PLACES=260, PETRI_TRANSITIONS=515} [2024-06-27 22:09:07,655 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 205 predicate places. [2024-06-27 22:09:07,655 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 515 transitions, 10139 flow [2024-06-27 22:09:07,658 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 22:09:07,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:07,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:07,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:09:07,659 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:07,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:07,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1227157447, now seen corresponding path program 4 times [2024-06-27 22:09:07,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:07,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514905599] [2024-06-27 22:09:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:07,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:08,933 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 22:09:08,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:08,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514905599] [2024-06-27 22:09:08,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514905599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:08,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:08,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:09:08,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645383284] [2024-06-27 22:09:08,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:08,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:09:08,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:08,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:09:08,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:09:09,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:09:09,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 515 transitions, 10139 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 22:09:09,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:09,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:09:09,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:12,128 INFO L124 PetriNetUnfolderBase]: 8015/13171 cut-off events. [2024-06-27 22:09:12,128 INFO L125 PetriNetUnfolderBase]: For 544329/544335 co-relation queries the response was YES. [2024-06-27 22:09:12,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100380 conditions, 13171 events. 8015/13171 cut-off events. For 544329/544335 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 89276 event pairs, 2222 based on Foata normal form. 12/12786 useless extension candidates. Maximal degree in co-relation 100258. Up to 10998 conditions per place. [2024-06-27 22:09:12,319 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 526 selfloop transitions, 35 changer transitions 0/574 dead transitions. [2024-06-27 22:09:12,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 574 transitions, 11724 flow [2024-06-27 22:09:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:09:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:09:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:09:12,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2024-06-27 22:09:12,321 INFO L175 Difference]: Start difference. First operand has 260 places, 515 transitions, 10139 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:09:12,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 574 transitions, 11724 flow [2024-06-27 22:09:13,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 574 transitions, 11595 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:13,319 INFO L231 Difference]: Finished difference. Result has 263 places, 522 transitions, 10264 flow [2024-06-27 22:09:13,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10010, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10264, PETRI_PLACES=263, PETRI_TRANSITIONS=522} [2024-06-27 22:09:13,320 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 208 predicate places. [2024-06-27 22:09:13,320 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 522 transitions, 10264 flow [2024-06-27 22:09:13,321 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 22:09:13,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:13,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:13,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:09:13,321 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:13,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:13,321 INFO L85 PathProgramCache]: Analyzing trace with hash 383783759, now seen corresponding path program 3 times [2024-06-27 22:09:13,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:13,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276329670] [2024-06-27 22:09:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:14,781 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 22:09:14,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:14,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276329670] [2024-06-27 22:09:14,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276329670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:14,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:14,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:14,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626634281] [2024-06-27 22:09:14,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:14,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:14,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:14,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:14,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:09:14,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 522 transitions, 10264 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 22:09:14,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:14,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:09:14,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:18,307 INFO L124 PetriNetUnfolderBase]: 8075/13263 cut-off events. [2024-06-27 22:09:18,308 INFO L125 PetriNetUnfolderBase]: For 557815/557815 co-relation queries the response was YES. [2024-06-27 22:09:18,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101445 conditions, 13263 events. 8075/13263 cut-off events. For 557815/557815 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 89879 event pairs, 2220 based on Foata normal form. 5/12871 useless extension candidates. Maximal degree in co-relation 101321. Up to 11117 conditions per place. [2024-06-27 22:09:18,492 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 539 selfloop transitions, 33 changer transitions 0/585 dead transitions. [2024-06-27 22:09:18,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 585 transitions, 11871 flow [2024-06-27 22:09:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 22:09:18,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-27 22:09:18,493 INFO L175 Difference]: Start difference. First operand has 263 places, 522 transitions, 10264 flow. Second operand 9 states and 213 transitions. [2024-06-27 22:09:18,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 585 transitions, 11871 flow [2024-06-27 22:09:19,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 585 transitions, 11757 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:19,505 INFO L231 Difference]: Finished difference. Result has 267 places, 527 transitions, 10367 flow [2024-06-27 22:09:19,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10150, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10367, PETRI_PLACES=267, PETRI_TRANSITIONS=527} [2024-06-27 22:09:19,506 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 212 predicate places. [2024-06-27 22:09:19,506 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 527 transitions, 10367 flow [2024-06-27 22:09:19,506 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 22:09:19,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:19,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:19,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:09:19,506 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:19,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:19,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1236325139, now seen corresponding path program 4 times [2024-06-27 22:09:19,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:19,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516607329] [2024-06-27 22:09:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:19,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:21,076 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 22:09:21,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:21,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516607329] [2024-06-27 22:09:21,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516607329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:21,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:21,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:21,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69011358] [2024-06-27 22:09:21,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:21,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:21,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:21,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:21,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:21,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:09:21,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 527 transitions, 10367 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 22:09:21,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:21,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:09:21,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:24,725 INFO L124 PetriNetUnfolderBase]: 8062/13251 cut-off events. [2024-06-27 22:09:24,725 INFO L125 PetriNetUnfolderBase]: For 567843/567843 co-relation queries the response was YES. [2024-06-27 22:09:24,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101269 conditions, 13251 events. 8062/13251 cut-off events. For 567843/567843 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 89893 event pairs, 2210 based on Foata normal form. 5/12858 useless extension candidates. Maximal degree in co-relation 101144. Up to 11003 conditions per place. [2024-06-27 22:09:24,889 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 528 selfloop transitions, 50 changer transitions 0/591 dead transitions. [2024-06-27 22:09:24,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 591 transitions, 11916 flow [2024-06-27 22:09:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 22:09:24,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 22:09:24,891 INFO L175 Difference]: Start difference. First operand has 267 places, 527 transitions, 10367 flow. Second operand 9 states and 216 transitions. [2024-06-27 22:09:24,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 591 transitions, 11916 flow [2024-06-27 22:09:26,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 591 transitions, 11748 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 22:09:26,027 INFO L231 Difference]: Finished difference. Result has 269 places, 527 transitions, 10309 flow [2024-06-27 22:09:26,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10199, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10309, PETRI_PLACES=269, PETRI_TRANSITIONS=527} [2024-06-27 22:09:26,028 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 214 predicate places. [2024-06-27 22:09:26,028 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 527 transitions, 10309 flow [2024-06-27 22:09:26,029 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 22:09:26,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:26,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:26,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:09:26,029 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:26,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:26,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1236325387, now seen corresponding path program 5 times [2024-06-27 22:09:26,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:26,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638105573] [2024-06-27 22:09:26,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:26,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:27,471 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 22:09:27,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638105573] [2024-06-27 22:09:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638105573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:27,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:27,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:09:27,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41487506] [2024-06-27 22:09:27,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:27,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:09:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:09:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:09:27,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:09:27,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 527 transitions, 10309 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 22:09:27,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:27,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:09:27,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:30,889 INFO L124 PetriNetUnfolderBase]: 8099/13309 cut-off events. [2024-06-27 22:09:30,890 INFO L125 PetriNetUnfolderBase]: For 579295/579301 co-relation queries the response was YES. [2024-06-27 22:09:31,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101648 conditions, 13309 events. 8099/13309 cut-off events. For 579295/579301 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 90339 event pairs, 2232 based on Foata normal form. 7/12916 useless extension candidates. Maximal degree in co-relation 101522. Up to 10973 conditions per place. [2024-06-27 22:09:31,121 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 506 selfloop transitions, 70 changer transitions 0/589 dead transitions. [2024-06-27 22:09:31,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 589 transitions, 12132 flow [2024-06-27 22:09:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:09:31,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:09:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:09:31,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2024-06-27 22:09:31,124 INFO L175 Difference]: Start difference. First operand has 269 places, 527 transitions, 10309 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:09:31,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 589 transitions, 12132 flow [2024-06-27 22:09:32,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 589 transitions, 11942 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 22:09:32,149 INFO L231 Difference]: Finished difference. Result has 269 places, 534 transitions, 10442 flow [2024-06-27 22:09:32,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10119, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10442, PETRI_PLACES=269, PETRI_TRANSITIONS=534} [2024-06-27 22:09:32,150 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 214 predicate places. [2024-06-27 22:09:32,151 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 534 transitions, 10442 flow [2024-06-27 22:09:32,151 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 22:09:32,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:32,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:32,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:09:32,151 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:32,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:32,152 INFO L85 PathProgramCache]: Analyzing trace with hash 374609061, now seen corresponding path program 6 times [2024-06-27 22:09:32,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297087119] [2024-06-27 22:09:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:32,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:33,635 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 22:09:33,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297087119] [2024-06-27 22:09:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297087119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:33,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:33,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:09:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094897125] [2024-06-27 22:09:33,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:33,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:09:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:09:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:09:33,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 22:09:33,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 534 transitions, 10442 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 22:09:33,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:33,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 22:09:33,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:37,308 INFO L124 PetriNetUnfolderBase]: 8091/13283 cut-off events. [2024-06-27 22:09:37,309 INFO L125 PetriNetUnfolderBase]: For 589665/589671 co-relation queries the response was YES. [2024-06-27 22:09:37,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101602 conditions, 13283 events. 8091/13283 cut-off events. For 589665/589671 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 89974 event pairs, 2206 based on Foata normal form. 7/12893 useless extension candidates. Maximal degree in co-relation 101475. Up to 10965 conditions per place. [2024-06-27 22:09:37,496 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 510 selfloop transitions, 71 changer transitions 0/594 dead transitions. [2024-06-27 22:09:37,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 594 transitions, 11999 flow [2024-06-27 22:09:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:09:37,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:09:37,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:09:37,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025510204081632 [2024-06-27 22:09:37,497 INFO L175 Difference]: Start difference. First operand has 269 places, 534 transitions, 10442 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:09:37,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 594 transitions, 11999 flow [2024-06-27 22:09:38,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 594 transitions, 11558 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-06-27 22:09:38,627 INFO L231 Difference]: Finished difference. Result has 270 places, 534 transitions, 10158 flow [2024-06-27 22:09:38,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10001, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10158, PETRI_PLACES=270, PETRI_TRANSITIONS=534} [2024-06-27 22:09:38,628 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 215 predicate places. [2024-06-27 22:09:38,629 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 534 transitions, 10158 flow [2024-06-27 22:09:38,629 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 22:09:38,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:38,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:38,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:09:38,629 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:38,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:38,630 INFO L85 PathProgramCache]: Analyzing trace with hash 374608875, now seen corresponding path program 7 times [2024-06-27 22:09:38,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:38,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520384973] [2024-06-27 22:09:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:38,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:40,650 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 22:09:40,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520384973] [2024-06-27 22:09:40,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520384973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:40,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:09:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914356043] [2024-06-27 22:09:40,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:40,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:09:40,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:40,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:09:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:09:40,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 22:09:40,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 534 transitions, 10158 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 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 22:09:40,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:40,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 22:09:40,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:44,122 INFO L124 PetriNetUnfolderBase]: 7857/12980 cut-off events. [2024-06-27 22:09:44,122 INFO L125 PetriNetUnfolderBase]: For 613532/613544 co-relation queries the response was YES. [2024-06-27 22:09:44,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100350 conditions, 12980 events. 7857/12980 cut-off events. For 613532/613544 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 89059 event pairs, 2091 based on Foata normal form. 12/12567 useless extension candidates. Maximal degree in co-relation 100223. Up to 10759 conditions per place. [2024-06-27 22:09:44,288 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 506 selfloop transitions, 52 changer transitions 0/583 dead transitions. [2024-06-27 22:09:44,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 583 transitions, 11669 flow [2024-06-27 22:09:44,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 22:09:44,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47845804988662133 [2024-06-27 22:09:44,290 INFO L175 Difference]: Start difference. First operand has 270 places, 534 transitions, 10158 flow. Second operand 9 states and 211 transitions. [2024-06-27 22:09:44,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 583 transitions, 11669 flow [2024-06-27 22:09:45,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 583 transitions, 11332 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-27 22:09:45,353 INFO L231 Difference]: Finished difference. Result has 273 places, 543 transitions, 10179 flow [2024-06-27 22:09:45,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9843, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10179, PETRI_PLACES=273, PETRI_TRANSITIONS=543} [2024-06-27 22:09:45,353 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 218 predicate places. [2024-06-27 22:09:45,353 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 543 transitions, 10179 flow [2024-06-27 22:09:45,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 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 22:09:45,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:45,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:45,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:09:45,354 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:45,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1165893363, now seen corresponding path program 2 times [2024-06-27 22:09:45,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:45,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284673551] [2024-06-27 22:09:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:45,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:46,816 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 22:09:46,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:46,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284673551] [2024-06-27 22:09:46,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284673551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:46,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:46,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:09:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142083188] [2024-06-27 22:09:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:46,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:09:46,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:09:46,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:09:46,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 22:09:46,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 543 transitions, 10179 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:46,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:46,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 22:09:46,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:49,757 INFO L124 PetriNetUnfolderBase]: 7463/12460 cut-off events. [2024-06-27 22:09:49,757 INFO L125 PetriNetUnfolderBase]: For 585221/585967 co-relation queries the response was YES. [2024-06-27 22:09:49,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90549 conditions, 12460 events. 7463/12460 cut-off events. For 585221/585967 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 86979 event pairs, 2196 based on Foata normal form. 317/12284 useless extension candidates. Maximal degree in co-relation 90419. Up to 10068 conditions per place. [2024-06-27 22:09:49,932 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 412 selfloop transitions, 21 changer transitions 0/560 dead transitions. [2024-06-27 22:09:49,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 560 transitions, 11219 flow [2024-06-27 22:09:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:09:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:09:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 22:09:49,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-06-27 22:09:49,934 INFO L175 Difference]: Start difference. First operand has 273 places, 543 transitions, 10179 flow. Second operand 6 states and 146 transitions. [2024-06-27 22:09:49,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 560 transitions, 11219 flow [2024-06-27 22:09:51,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 560 transitions, 11064 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:51,129 INFO L231 Difference]: Finished difference. Result has 274 places, 543 transitions, 10073 flow [2024-06-27 22:09:51,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=10024, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10073, PETRI_PLACES=274, PETRI_TRANSITIONS=543} [2024-06-27 22:09:51,129 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 219 predicate places. [2024-06-27 22:09:51,129 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 543 transitions, 10073 flow [2024-06-27 22:09:51,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:51,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:51,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:51,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:09:51,130 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:09:51,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:51,130 INFO L85 PathProgramCache]: Analyzing trace with hash -290761799, now seen corresponding path program 5 times [2024-06-27 22:09:51,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:51,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893157578] [2024-06-27 22:09:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:51,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat